Wednesday, December 24, 2008
Sunday, December 14, 2008
Wednesday, December 3, 2008
Send in your experiences!
Holiday greetings to one and all!
If you want to share your stories of Silliman University and want it to be featured here, now is your chance!
We are inviting students and alumni of SillimanU to send us their experiences while they were here in the university (or ARE in the university). It can be almost anything (winners during the intramurals, cheering competition, the new nursing building...). You can share to us your "SU moments" via email: suphysics[at]gmail[dot]com. If it's in audio/video format and you uploaded it in other sites, you may also send us the link at suphysics[at]gmail[dot]com.
Let us spread the Christmas joy! Happy Holidays, everyone!
Friday, November 7, 2008
Wednesday, October 29, 2008
Physics is Fun! Podcast
Subscribe Free for future posts Add this player to my Page
Mispronounced a few "THE"
Going to improve audio quality
Thursday, October 9, 2008
P6 Band 2008
As the 1st semester winds down, the JPPS would like to feature the great and awesome of the shern shern shern.. (yahhck.. hoy.....)...
Seriously, here's the P6 Band in action during the Founder's Week Celebration in Silliman University.
The Great! Vocalist - Marvin Flores
The Late! Co-vocalist - Francis Quiogue
The Master! Lead Guitarist - Kenny Vergano
The Rhythmic! Rhythm Guitarist - Bryan King
The Cool! Bass Guitarist - Jason Crispo
The Awesome! Drummer - Ronmel Ross
Seriously, here's the P6 Band in action during the Founder's Week Celebration in Silliman University.
The Great! Vocalist - Marvin Flores
The Late! Co-vocalist - Francis Quiogue
The Master! Lead Guitarist - Kenny Vergano
The Rhythmic! Rhythm Guitarist - Bryan King
The Cool! Bass Guitarist - Jason Crispo
The Awesome! Drummer - Ronmel Ross
Friday, October 3, 2008
New Equipment
The new equipment measures dosage depending on the radiation type (alpha, beta, gamma).
More photos after the break.
More photos after the break.
Saturday, September 20, 2008
1st Law of Motion
One sunny afternoon, Galleria met up with her old college friends Mark and Mason in a coffee shop. They have been planning their get together for a while and Galleria was very nervous. She hasn't seen them in a long while and she had to see their faces. When she arrived, she saw Mark, who didn't change much, and Mason, who was, in short, macho. As they were catching up with old times, Mark had to leave early for working the night shift and so Galleria and Mason were left together to talk about the past.
They said the usual stories any reunion would have—unforgettable moments, embarrassing experiences, back biting, and most importantly past relationships. To Galleria's delight, Mason was single. He had his last break-up just over a month ago. This wasn't the time to move fast, so Galleria took her time.
By the time the street lights were on, they had finished catching up on almost everything—from the first day of college to yesterday's grocery shopping. It was time to say goodbye, and for Galleria to make a move she could regret. She pecked him goodbye and gracefully ran the other way never looking back thinking if it was an appropriate thing to do.
Suppose love has motion. Galleria's love for Mason grew over time. It
is just like carrying heavier things from lighter things. Over time,
when carrying heavier loads, one would need to increase one's strength
to carry even heavier things. So when one starts to carry, say a crate
half-filled with fruits, one would need to continuously apply force to
move it from one place to another, say point A to point B. While
that's moving, you have your goal in mind—to move the crate to point
B. First question: would you stop before you reach point B? What's
stopping you at that point? Well, you wouldn't stop moving unless
something is blocking your way or you're suddenly too tired to
continue. For whatever reasons (and there must be a hundred
possibilities), if those reasons don't exist, then you and your crate
would eventually reach point B. With this example in mind, it will
help us understand how Newton's first law of motion works.
In its plainest sense, the first law of motion by Sir Isaac Newton
says once something moves, it can't be stopped unless something
opposes it. So when bringing a crate half-filled with fruits from
point A to point B, one would carry the crate from A and move it to B.
Here's the question: If one reaches at point B with the crate, why
would one stop if the law states that once something moves, it can't
be stopped? What makes one end there? The answer lies in the idea of a line.
A little math knowledge would tell us a line is infinite unless
limits are specified. For now, knowing the location of point A is
relative, which means point A can be anywhere you want it to be. In
this case, point B is more important as it is the destination. So
assuming point B is at infinity, one wouldn't stop moving the crate
until one would reach infinity! It would take forever to get there. So
now let us say one has defined limits of point B. One would then stop
at point B because of the thing that's opposing it—the limit, which in
this case, is fulfillment. One already reached the goal. What is there
left to accomplish?
Going back to the story, Galleria immediately fell in love with Mason
primarily for his looks. She secretly exerted love towards the moment
they met. It is still unknown to us if that love reached Mason's heart
and feelings. Even if she kissed him, his reactions were not yet
revealed.
(NOTE: This story is for entertainment purposes only.)
They said the usual stories any reunion would have—unforgettable moments, embarrassing experiences, back biting, and most importantly past relationships. To Galleria's delight, Mason was single. He had his last break-up just over a month ago. This wasn't the time to move fast, so Galleria took her time.
By the time the street lights were on, they had finished catching up on almost everything—from the first day of college to yesterday's grocery shopping. It was time to say goodbye, and for Galleria to make a move she could regret. She pecked him goodbye and gracefully ran the other way never looking back thinking if it was an appropriate thing to do.
Suppose love has motion. Galleria's love for Mason grew over time. It
is just like carrying heavier things from lighter things. Over time,
when carrying heavier loads, one would need to increase one's strength
to carry even heavier things. So when one starts to carry, say a crate
half-filled with fruits, one would need to continuously apply force to
move it from one place to another, say point A to point B. While
that's moving, you have your goal in mind—to move the crate to point
B. First question: would you stop before you reach point B? What's
stopping you at that point? Well, you wouldn't stop moving unless
something is blocking your way or you're suddenly too tired to
continue. For whatever reasons (and there must be a hundred
possibilities), if those reasons don't exist, then you and your crate
would eventually reach point B. With this example in mind, it will
help us understand how Newton's first law of motion works.
In its plainest sense, the first law of motion by Sir Isaac Newton
says once something moves, it can't be stopped unless something
opposes it. So when bringing a crate half-filled with fruits from
point A to point B, one would carry the crate from A and move it to B.
Here's the question: If one reaches at point B with the crate, why
would one stop if the law states that once something moves, it can't
be stopped? What makes one end there? The answer lies in the idea of a line.
A little math knowledge would tell us a line is infinite unless
limits are specified. For now, knowing the location of point A is
relative, which means point A can be anywhere you want it to be. In
this case, point B is more important as it is the destination. So
assuming point B is at infinity, one wouldn't stop moving the crate
until one would reach infinity! It would take forever to get there. So
now let us say one has defined limits of point B. One would then stop
at point B because of the thing that's opposing it—the limit, which in
this case, is fulfillment. One already reached the goal. What is there
left to accomplish?
Going back to the story, Galleria immediately fell in love with Mason
primarily for his looks. She secretly exerted love towards the moment
they met. It is still unknown to us if that love reached Mason's heart
and feelings. Even if she kissed him, his reactions were not yet
revealed.
(NOTE: This story is for entertainment purposes only.)
Saturday, August 30, 2008
JPPS Booth 2008
Everday after the opening of the booth festival, the JPPS booth was constantly flooded with people both outside and inside. Many of those who stayed outside were perplexed at the trivia questions given to them by the physics majors which involved pieces of paper, diagrams, and match sticks. Many of them who were ready to be entertained by new ideas were marveled when they found the answers especially when they gave a similar reaction which went, "ahhhhhhh." Some [people] also shared their own trivia questions like, "How far can a dog run into a forest?" and our answer was, "Half. If the dog goes beyond half of the forest, then the dog is going out of the forest." Everybody enjoys a braintickle or two, ya? And for those who went inside to have fun with good open hearts and minds had an exciting time saying their visit was well worth it. It was an exciting time for both the physics majors and the visitors alike.
The JPPS would like to thank everyone who made this activity successful!
The JPPS would like to thank everyone who made this activity successful!
Thursday, August 28, 2008
Last August 25, 2008 in the Miss Silliman Pageant Night, Algrace Enriquez Bellingan, Miss Arts and Sciences, garnered the awards--Darling of the Press and Miss Congeniality.
With this, the whole Physics Family would like to congratulate her in all her endeavors. She surely makes us proud.
Indeed, she is a girl not just of brains but also of beauty.
Wee... ^^,
Wednesday, August 27, 2008
In her green gown, Algrace Bellingan, BS Physics with emphasis on computer application student poses herself in front of the camera together with six other candidates. Ms. Bellingan went out her comfort zones and entered the Miss Silliman Pageant in spite all the odds.
Go Miss Bellingan!
Go Miss Arts & Sciences!
Sunday, August 24, 2008
Thursday, August 21, 2008
Sunday, August 17, 2008
Friday, August 15, 2008
Saturday, August 9, 2008
Road to the Physics Booth
Still a long way to go.
- The yummy chocolately two-peso treat, choco roll (or known as the "physics balls")
- The very early 4am rummage sale
- The other fund raising thing... ^_^
So far, we are very close in getting enough funding for our physics booth for the upcoming Founder's Week Celebration in Silliman University.
- The yummy chocolately two-peso treat, choco roll (or known as the "physics balls")
- The very early 4am rummage sale
- The other fund raising thing... ^_^
So far, we are very close in getting enough funding for our physics booth for the upcoming Founder's Week Celebration in Silliman University.
Saturday, August 2, 2008
Gawad Kalinga II (Community Service)
Silliman University physics teachers & students visited the community of Gawad Kalinga to help increase awareness on energy conservation. The activity was a sucess and we would like to thank everyone for their support especially the community for giving us their time. Here are the pictures. Enjoy! |  |
Wednesday, July 30, 2008
Physics Olympics Results!
WINNERS of the
Philippine Junior Physics Society
Physics Olympics 2008
Philippine Junior Physics Society
Physics Olympics 2008
LARGE BARGE
Rank Name Course Subject & Section
1ST Place Camille Cabo & Justin Siastres BSN – II Physics 24 – I
2nd Place Peter Yunson & Robert Cong BSPT - II Physics 45 - C
3rd Place Jaylin Faith Quiamco & Julie Arcilla BSPT- II Physics 45 - C
SMALLEST KITE
Rank Name Course Subject & Section
1ST Place Joe Albert Acosta & Rafael Trias BSN – II Physics 24 – I
2nd Place Kay Sarabia, Betsy Pearl Rodriguez,
& Joy Paalisbo BSN - II Physics 24 - I
3rd Place Saraya Gamo, Nicole Espina,
& Jeric Fernandez BSN- II Physics 24 - G
EGG DROP
Rank Name Course Subject & Section
1ST Place Gene Licerio, Kevin Maquiling,
& Ray Macatiguib BSME – II Physics 46 - C
2nd Place Brigitte Mae Locsin, April Sung,
& Malou Docto BSN - II Physics 24 - J
3rd Place Danielle Enriquez, Danica Shanne Uy,
& Justin Alexis Nierras BSPT- II Physics 45 - C
P6 BEY BLADE
Rank Name Course Subject & Section
1ST Place Nicolle Marlon Nacu & Aileen Alaban BSND - I Physics 11 - B
2nd Place Clint John Olasiman, Jonathan Ariel Teves,
& Ray Macatiguib BSCE - II Physics 46 - A
Physics 46 - B
3rd Place Archelie Cadima, Harlyn Ponsica,
& Honelyn Salvoro BSN - II Physics 24- G
ACCURACY TEST
Rank Name Course Subject & Section
1ST Place Jaymar Matia-ong, Antonieto Opelario,
& Eduardo Chua BSME - II Physics 46 - C
2nd Place Chrystyriz P. Tolosa, Abigail Valente,
& Raecy Borromeo BSN – II Physics 24 - J
3rd Place Michael Pacurza, Roscoe Mendoza,
& Jerick Hernani BSN - II Physics 24 - G
Tuesday, July 29, 2008
Friday, July 25, 2008
Tuesday, July 22, 2008
Physics Olympics
The Junior Philippine Physics Society (JPPS) will be holding its annual PHYSICS OLYMPICS on July 24, 2008 (THURSDAY) from 10am-12nn at VH GROUNDS. We invite students with physics subjects to join the events, which are listed below.
LIST OF EVENTS:
1.) Accuracy Test *NEW!
2.) Smallest Kite *NEW!
3.) Egg drop
4.) Large Barge
5.) PBB (Physics Bey Blade)
==================
GENERAL RULES
In the construction of devices, what is not expressly prohibited in the written rules is allowed.
If two teams tie for first place, the next in rank will be declared as only a 3rd Place winner. If, on account of a tie, there are already three or more winners in the 2nd and 3rd place, none will be declared a 3rd Place winner.
The decision of the judge/coordinator/monitor is final.
================If you have any questions, you may ask your current physics teacher or members of the JPPS organization.
POSTED BY LOUIE AMANTE
POSTED BY LOUIE AMANTE
Wednesday, June 11, 2008
Welcome to School Year 2008-2009!
As we face another busy year ahead of us, allow me to fill you in on the latest happenings in the Physics Department:
13 Freshmen + 1 shiftee:
Mainly due to the generous allowances from DOST and Portal Scholarships, the freshman population has entered the double-digit territory again. The last time freshman population reached these levels was in the 1st Sem of SY2005-2006. Members of that batch are now in their senior year.
In addition to the freshmen, the department also has a shiftee from the Math department in the name of Philip Palafox.
Here is a list of the students who have enrolled in the BS Physics program for this school year so far:
1st Year:
Our department has recently hired three (3) new faculty members:
Mrs. Giselle Ann Alcoran-Alvarez, BS Phys (SU), M Phys (USC)
Ms. Blesilda Rachel Esterioso, BS Phys (SU), MS Phys Cand. (USC)
Mr. Nelvin Quiambao, BS Phys (SU), MS Phys Cand. (SU)
Click here to see when these three graduated from SU.
The department decided on hiring the three (3) teachers to augment our depleted faculty roster due to the absence of Dr. Hope Bandal and Ms. Liza Marie Dangkulos and the overwhelming number of students who take physics subjects in the 1st Semester. Dr. Bandal is on Sabbatical Leave, and will be back in the 2nd Semester. Ms. Dangkulos is pursuing an MS degree in Physics at MSU-IIT, and is scheduled to beef up our faculty roster in 2010.
Freshman Orientation
To welcome the new BS Physics students, the department has scheduled the Freshman Orientation on Sunday, June 15 at Dream Park. Assembly will be in front of VH at 9 AM.
13 Freshmen + 1 shiftee:
Mainly due to the generous allowances from DOST and Portal Scholarships, the freshman population has entered the double-digit territory again. The last time freshman population reached these levels was in the 1st Sem of SY2005-2006. Members of that batch are now in their senior year.
In addition to the freshmen, the department also has a shiftee from the Math department in the name of Philip Palafox.
Here is a list of the students who have enrolled in the BS Physics program for this school year so far:
1st Year:
- Zyriel Abejero
- Ma. Roxan Abiquibil
- Nina Rose Abiquibil
- Lethur Crispo
- Catalino Dael III
- Carlito Garcia Jr.
- Haidee Mana-ay
- Louis Edmund Maravilla
- Rhys Montecillo
- Rhea Fe Sinajon
- Kate Vegano
- Thomas Maurris Villegas
- William Robert Yasi
- Al Grace Bellingan
- Izzy Martin Maxino
- Jonathan Andro Tan
- Katherine Celia Teves
- Evelyn Alderite
- Louie Jay Amante
- Nizza Charmagne Baylosis
- Dyck Nouwen Cedino
- Jan Ina Ho
- Kris Marie Torres
- Joyce Ann Angot
- Jason Ray Crispo
- Mary Ann Cruz
- Marvin Flores
- Wenneth Jean Fuentebella
- Lourdes Irene Jorolan
- Bryan Vincent King
- Maria Lourdes Anne Lee
- Kay Marie Martinez
- Eliel Paglinawan
- Philip Khalil Palafox
- Francis Frederick Quiogue
- Ronmel Ross
- Kenny Vergano
Our department has recently hired three (3) new faculty members:
Mrs. Giselle Ann Alcoran-Alvarez, BS Phys (SU), M Phys (USC)
Ms. Blesilda Rachel Esterioso, BS Phys (SU), MS Phys Cand. (USC)
Mr. Nelvin Quiambao, BS Phys (SU), MS Phys Cand. (SU)
Click here to see when these three graduated from SU.
The department decided on hiring the three (3) teachers to augment our depleted faculty roster due to the absence of Dr. Hope Bandal and Ms. Liza Marie Dangkulos and the overwhelming number of students who take physics subjects in the 1st Semester. Dr. Bandal is on Sabbatical Leave, and will be back in the 2nd Semester. Ms. Dangkulos is pursuing an MS degree in Physics at MSU-IIT, and is scheduled to beef up our faculty roster in 2010.
Freshman Orientation
To welcome the new BS Physics students, the department has scheduled the Freshman Orientation on Sunday, June 15 at Dream Park. Assembly will be in front of VH at 9 AM.
Saturday, May 17, 2008
Tuesday, April 22, 2008
Celebrate Earth Day!
Turn off your lights for an hour
Cycle or Walk instead of using your motorized vehicle
Play board games with your friends instead of playing on your computer
Celebrate Earth Day today! Contribute to our environment.
Cycle or Walk instead of using your motorized vehicle
Play board games with your friends instead of playing on your computer
Celebrate Earth Day today! Contribute to our environment.
Sunday, April 6, 2008
Summer Meteor Shower
This month's meteor shower will be the lyrids meteor shower.
Peak: April 22, Favorable to view right after midnight
Rate: 8 per hour
Remarks: The moon will add to the difficulty of observing the meteor shower.
Position: Constellation Lyra; 30 deg. above the northeastern horizon
Peak: April 22, Favorable to view right after midnight
Rate: 8 per hour
Remarks: The moon will add to the difficulty of observing the meteor shower.
Position: Constellation Lyra; 30 deg. above the northeastern horizon
Monday, March 31, 2008
A Presentation on Open Source
The first draft on the introduction of open source by the SU JPPS (powerpoint presentation .pps)
(LINK)
(LINK)
Tuesday, March 25, 2008
Physics Stars
Black Holes Bring Filipina An Award
Reinabelle Reyes, a 24-year-old astrophysicist, was given the "Chambliss Astronomy Achievement Student Award" at the annual meeting of the American Astronomical Society in January. She was given the award in line with her major role in the discovery of the largest number of "super massive" black holes in the center of galaxies, hidden by obscured quasars.
Reyes is a DOST scholar who graduated valedictorian from the Philippine Science High School in 2001, and 4 years later graduated in Ateneo de Manila, as summa cum laude with a Physics degree. She then took her masterals in Particle physics at the International Center for Theoretical Physics in Trieste, Italy. Reyes is now a candidate for Ph.D in astrophysics, at the Princeton University in New Jersey.
Reyes is a DOST scholar who graduated valedictorian from the Philippine Science High School in 2001, and 4 years later graduated in Ateneo de Manila, as summa cum laude with a Physics degree. She then took her masterals in Particle physics at the International Center for Theoretical Physics in Trieste, Italy. Reyes is now a candidate for Ph.D in astrophysics, at the Princeton University in New Jersey.
Saturday, March 1, 2008
Plane on a Conveyor Belt
Is it possible? Check it out at Mythbusters!
Part 1
taken from http://youtube.com/watch?v=MuXK1nr9_jg by trevdilley
Part 2
taken from http://www.youtube.com/watch?v=U9STo3fjfGg&feature=related by trevdilley
Part 1
taken from http://youtube.com/watch?v=MuXK1nr9_jg by trevdilley
Part 2
taken from http://www.youtube.com/watch?v=U9STo3fjfGg&feature=related by trevdilley
Friday, February 29, 2008
Site Renovation
SUPhysics.blogspot.com apologizes if some of the links in this site do not work. The team is currently trying to renovate the website by trying out various templates.
Sunday, February 24, 2008
Inter-High School Physics Quiz Bowl 2008
Junior Philippine Physics Society (JPPS)
PHYSICS DEPARTMENT
Silliman University
Held in AVT1; 2pm February 22, 2008;
3rd - Negros Oriental High School
2nd - Camanjac National High School
1st - Dumaguete Science High School
Friday, February 22, 2008
Hard at Work
As we head towards our main event, the JPPS members are hard at work doing the final preparations. We hope to see you there!
WHAT: Inter-High School Physics Quiz Bowl 2008
WHO: Negros Oriental High School, Camanjac National High School, Dumaguete Science High School
WHERE: AVT-1
WHEN: 2PM; Friday, February 22, 2008
You are invited to watch. Trivia questions and prizes await you, the audience! Bring your friends.
WHO: Negros Oriental High School, Camanjac National High School, Dumaguete Science High School
WHERE: AVT-1
WHEN: 2PM; Friday, February 22, 2008
You are invited to watch. Trivia questions and prizes await you, the audience! Bring your friends.
HARD AT WORK (since 10AM, FEB 22, 08)
Monday, February 18, 2008
Honorables
This year, out of the 26 BS Physics students, 16 earned the right to be awarded during Honors Day at the Luce Auditorium last Feb 15. The SU Physics family congratulates the following:
College Honors:
Evelyn Alderite, 2nd Yr
Jason Ray Crispo, 3rd Yr
Marvin Flores, 3rd Yr
Maria Lourdes Anne Lee, 3rd Yr
Kay Marie Martinez, 3rd Yr
Eliel Paglinawan, 3rd Yr
Ronmel Ross, 3rd Yr
Class Honors:
Louie Jay Amante, 2nd Yr
Joyce Ann Angot, 3rd Yr
Wenneth Jean Fuentebella, 3rd Yr
Francis Frederick Quiogue, 3rd Yr
Jan Ina Ho, 2nd Yr
Algrace Bellingan, 1st Yr
Izzy Martin Maxino, 1st Yr
Jonathan Andro Tan, 1st Yr
Katherine Celia Teves, 1st Yr
College Honors:
Evelyn Alderite, 2nd Yr
Jason Ray Crispo, 3rd Yr
Marvin Flores, 3rd Yr
Maria Lourdes Anne Lee, 3rd Yr
Kay Marie Martinez, 3rd Yr
Eliel Paglinawan, 3rd Yr
Ronmel Ross, 3rd Yr
Class Honors:
Louie Jay Amante, 2nd Yr
Joyce Ann Angot, 3rd Yr
Wenneth Jean Fuentebella, 3rd Yr
Francis Frederick Quiogue, 3rd Yr
Jan Ina Ho, 2nd Yr
Algrace Bellingan, 1st Yr
Izzy Martin Maxino, 1st Yr
Jonathan Andro Tan, 1st Yr
Katherine Celia Teves, 1st Yr
Friday, February 8, 2008
Upcoming SU Physics Events
Now that we're back, we have a bunch of activities for February and here they are!
1.) The Silliman University Junior Philippine Physics Society (JPPS) will hold its annual Physics Quiz Bowl in the month of February of 2008. Various high schools in Dumaguete City, Philippines will be competing in the event. There will be three rounds of difficulty from the easiest to the hardest. More updates soon!
2.) This month, we will FINALLY be updating the video of "Ask The Physicists" found on YouTube. Ask the Physicists is a web show where you can ask us questions related to our field. Don't be shy. Send us something trivial!
[link]
3.) We finally have a podcast where we talk about physics, technology, and a little Silliman U news in between. A podcast is like listening to the radio but its playable on demand. You can download it onto your MP3 player and play it anytime you want or use the RSS feeds and get them via iTunes! Stay tuned for updates.
[wikipedia definition of podcast]
4.) Oh, and since National Astronomy Week is just around the corner, we might have some sky viewing activites for the college students at the university. Just look at your college bulletin boards to see if we'll host the occassion.
Enjoy!
National Astronomy Week
February 18 - 24 is the celebration of National Astronomy Week, which is held every 3rd week of February. The theme of the celebration is: Enhancing the awareness of the public on the International Year of Astronomy 2009 (IYA2009). PAGASA will be conducting the following activities: astronomy lecture, stargazing and telescoping sessions, film showing and planetarium show. Astronomy related organizations are invited to do activities in their areas and promote an advocacy on astronomy.
Friday, February 1, 2008
Have FUN with physics
1. Most roller coasters are designed with elliptical loops in order to limit the centripetal accelerations experienced by the passengers. The elliptical loops are positioned with the major axis is perpendicular to the Earth. This ellipse has a major axis AM, a minor axis am, an eccentricity of å and the ride is designed to give riders a feeling of weightlessness at the top of the loop. Find the following, expressing all answers in terms of the eccentricity and the major axis.
a) Minimum velocity needed at the top of the loop. so far: Fnormal +mg = (mass x velocity top squared)/radius
b) The radial normal force at the minor axis under the condition of a)
c) Net normal force experienced by the passengers at the minor axis asthey move towards the top of the loop. Discuss the results aseccentricity approaches zero and one.
2. A pirate ship is moving along the coastline, trying to overtake a merchantship making for a harbor. At the rear of the merchant ship flies a flag. You are sure that the ship can be convinced to surrender if you can blow the flagoff with a single shot! You’ll have to set the fuse to the proper length so the cannonball explodes just as it reaches the flagpole. The cannon mounted on the front of your ship has a maximum horizontal range of 950 meters (at 45degrees), so you’ll use it to make the shot.Consider the following in making your calculations: The straight -line distancefrom your cannon to the flag is 650 meters due East. Your ship has a speed of3 knots with respect to the water surface at a heading of 45 degrees south of east. The merchant ship has a speed of 4 knots with respect to the watersurface and is heading northeast. The fuse in the cannonball burns at a rate of2 cm/second. The flag is mounted at the same height as the cannon. Hint:transform to a coordinate frame attached to the cannon
a) You’ll want to keep the trajectory low, so the other ship can’t take evasive action after your shot. If your angle of elevation is to be a maximum of 30 degrees with respect to the water surface, what length of fuse is needed?
b) How long after sighting the ship will you take your shot?
c) With respect to the direction of travel of your pirate ship, at what angle should you aim the cannon when you fire the shot?
You may need physical constant not provided in these problems. Look them up. Show all calculations.Express answers in scientific notation with 3 significant digits of accuracy.
3. In a region of space near a group of charged particles, the potential energy function can be written as a function of distance from the center of the group. In particular, the potential energy may be written asU(x)= x4/5 – 15x3 + 125x2 +100which has units of electron-volts when x is in centimeters.Knowing that the forces exerted by charged particles are conservative, answerthe following questions about an electron in the region within 20 cm of the center of the group
a) At which locations within this range will the forces acting on theelectron be in equilibrium?
b) Which of these are stable equilibrium locations?
c) What is the maximum velocity (m/s)that an electron can have if it is toremain ‘trapped’ within the region?
d) What fraction of the speed of light is this?
a) Minimum velocity needed at the top of the loop. so far: Fnormal +mg = (mass x velocity top squared)/radius
b) The radial normal force at the minor axis under the condition of a)
c) Net normal force experienced by the passengers at the minor axis asthey move towards the top of the loop. Discuss the results aseccentricity approaches zero and one.
2. A pirate ship is moving along the coastline, trying to overtake a merchantship making for a harbor. At the rear of the merchant ship flies a flag. You are sure that the ship can be convinced to surrender if you can blow the flagoff with a single shot! You’ll have to set the fuse to the proper length so the cannonball explodes just as it reaches the flagpole. The cannon mounted on the front of your ship has a maximum horizontal range of 950 meters (at 45degrees), so you’ll use it to make the shot.Consider the following in making your calculations: The straight -line distancefrom your cannon to the flag is 650 meters due East. Your ship has a speed of3 knots with respect to the water surface at a heading of 45 degrees south of east. The merchant ship has a speed of 4 knots with respect to the watersurface and is heading northeast. The fuse in the cannonball burns at a rate of2 cm/second. The flag is mounted at the same height as the cannon. Hint:transform to a coordinate frame attached to the cannon
a) You’ll want to keep the trajectory low, so the other ship can’t take evasive action after your shot. If your angle of elevation is to be a maximum of 30 degrees with respect to the water surface, what length of fuse is needed?
b) How long after sighting the ship will you take your shot?
c) With respect to the direction of travel of your pirate ship, at what angle should you aim the cannon when you fire the shot?
You may need physical constant not provided in these problems. Look them up. Show all calculations.Express answers in scientific notation with 3 significant digits of accuracy.
3. In a region of space near a group of charged particles, the potential energy function can be written as a function of distance from the center of the group. In particular, the potential energy may be written asU(x)= x4/5 – 15x3 + 125x2 +100which has units of electron-volts when x is in centimeters.Knowing that the forces exerted by charged particles are conservative, answerthe following questions about an electron in the region within 20 cm of the center of the group
a) At which locations within this range will the forces acting on theelectron be in equilibrium?
b) Which of these are stable equilibrium locations?
c) What is the maximum velocity (m/s)that an electron can have if it is toremain ‘trapped’ within the region?
d) What fraction of the speed of light is this?
Ubuntu on my AMD64
I managed to install Ubuntu into my HP Pavilion DV6604nr (AMD 64-Bit AthlonX2) last night. But I'm still trying to figure out how to dual boot between Ubuntu and my new Windows XP OS. Pics below.
Friday, January 18, 2008
International Year of Astronomy 2009
This coming 2009, the world is going to celebrate the International Year of Astronomy (IYA). The International Astronomical Union (IAU) declared 2009 as the year of astronomy since it corresponds to the 400th anniversary of Galileo's observation of the night sky. The Philippines being a signatory of the IAU will participate in this global event. The physics department of Silliman is being invited by Ms. Cynthia Celebre, chief of the AsRDS of PAGASA, to participate in the activities of the IYA.
The events for the IYA are currently being planned out by the IAU. The activities in the Philippines would include traveling exhibits, a quiz show, a series of lectures, telescope and binocular using, and the organization of the first National Astronomy Congress.
The events for the IYA are currently being planned out by the IAU. The activities in the Philippines would include traveling exhibits, a quiz show, a series of lectures, telescope and binocular using, and the organization of the first National Astronomy Congress.
Monday, January 7, 2008
Ask the Physicists
Ask us! Just "comment" it below. (reposted)
Order of appearance:
Bryan King - Computers & gadgets
Marvin Flores - Quantum & more
Ronmel Ross - Sports
Norman Marigza - Astronomy
Francis Quiogue - War & food
Don't worrry. There are more of us.
Order of appearance:
Bryan King - Computers & gadgets
Marvin Flores - Quantum & more
Ronmel Ross - Sports
Norman Marigza - Astronomy
Francis Quiogue - War & food
Don't worrry. There are more of us.
Thursday, January 3, 2008
Wednesday, January 2, 2008
2008 What Day is Today? Really.
2008 What Day is Today? Really.*
by Bryan Vincent King
*intended for entertainment purposes only
January 1 - Avoid Getting Blown Up Day
January 2 - Clean Your House Safely Day
January 3 - Slouch At Work Day
January 4 - Check Potato Prices Day
January 5 - Brain Explosion Day
January 6 - Tug Your Brother's Shirt Day
January 7 - Mascot Day
January 8 - Drink Through A Straw Day
January 9 - Ride A Motorcycle While Wearing An Orange Shirt Day
January 10 - Bake A Cake Day
January 11 - Buy A Really Old CD Day
January 12 - Become A Creepy Idiot Day
January 13 - Visit Your Imaginary Island Day
January 14 - Prevent A Zit Day
January 15 - Listen To Classic Music Day
January 16 - Forget You Were A Pirate Day
January 17 - Stand On Your Car And Shout "Freedom!" Day
January 18 - Smell Your Fridge Day
January 19 - Visit A Mall And Buy Nothing Day
January 20 - Wake Up Very Early Day
January 21 - Talk Like A Drunkard Day
January 22 - Skin A Potato Day
January 23 - Soak Your Clean Clothes Day
January 24 - Get Drunk With Water Day
January 25 - Wear Huge Boots and Think You're A Cowboy Day
January 26 - Speak In An Invented Language Day
January 27 - Believe Diamonds Are Cheap Day
January 28 - Attempt A Double Jump Day
January 29 - Sleep At Another Person's Bed Day
January 30 - Audition For Something You're Not Good At Day
January 31 - Discover Art Day
Will update for the remaining months.
by Bryan Vincent King
*intended for entertainment purposes only
January 1 - Avoid Getting Blown Up Day
January 2 - Clean Your House Safely Day
January 3 - Slouch At Work Day
January 4 - Check Potato Prices Day
January 5 - Brain Explosion Day
January 6 - Tug Your Brother's Shirt Day
January 7 - Mascot Day
January 8 - Drink Through A Straw Day
January 9 - Ride A Motorcycle While Wearing An Orange Shirt Day
January 10 - Bake A Cake Day
January 11 - Buy A Really Old CD Day
January 12 - Become A Creepy Idiot Day
January 13 - Visit Your Imaginary Island Day
January 14 - Prevent A Zit Day
January 15 - Listen To Classic Music Day
January 16 - Forget You Were A Pirate Day
January 17 - Stand On Your Car And Shout "Freedom!" Day
January 18 - Smell Your Fridge Day
January 19 - Visit A Mall And Buy Nothing Day
January 20 - Wake Up Very Early Day
January 21 - Talk Like A Drunkard Day
January 22 - Skin A Potato Day
January 23 - Soak Your Clean Clothes Day
January 24 - Get Drunk With Water Day
January 25 - Wear Huge Boots and Think You're A Cowboy Day
January 26 - Speak In An Invented Language Day
January 27 - Believe Diamonds Are Cheap Day
January 28 - Attempt A Double Jump Day
January 29 - Sleep At Another Person's Bed Day
January 30 - Audition For Something You're Not Good At Day
January 31 - Discover Art Day
Will update for the remaining months.
Tuesday, January 1, 2008
Make your 8 new year resolutions for 2008!
2008 has finally arrived. I don't really make new year resolutions but this year, I'll try to make them realistic for myself. Here are my eight new year resolutions for 2008:
1.) Be healthy. I'm slim and I don't plan on losing weight. Instead, I might hit the gym to buff up and eat right, which means less junk food, less soda, and more fruits & veggies.
2.) Play more sports. All work and no play is boring. I have forgotten the joy of basketball, track & field, and soccer, and I think it's time I came back.
3.) Do more. Sleep less. Even with school, it's not enough to keep me off my bed. When I sleep, I need at least 10 hours of it but I know I can do with less.
4.) Think more of myself. Some people have hinted I do too much for friends while some say I do little for them compared to other people in the same group. It's time I thought of myself more and make it clear to them there's always this level of friendship that makes barriers.
5.) Learn more. Lectures, books, and more educational opportunities await. Time for me to grab them.
6.) Volunteer. Nothing feels better than doing something for the community. I should be able to find at least ONE place to volunteer in.
7.) Do two daring tasks. Whether it be singing or dancing in a show where I have no ability to do so, I'm going to do it! (no illegal/immoral stuff)
8.) At least 80% completion of my thesis. Besides staying with the Physics program, I have to do well on my thesis and finish it before time runs out.
Share to us your eight New Year Resolutions!
Just comment below.
1.) Be healthy. I'm slim and I don't plan on losing weight. Instead, I might hit the gym to buff up and eat right, which means less junk food, less soda, and more fruits & veggies.
2.) Play more sports. All work and no play is boring. I have forgotten the joy of basketball, track & field, and soccer, and I think it's time I came back.
3.) Do more. Sleep less. Even with school, it's not enough to keep me off my bed. When I sleep, I need at least 10 hours of it but I know I can do with less.
4.) Think more of myself. Some people have hinted I do too much for friends while some say I do little for them compared to other people in the same group. It's time I thought of myself more and make it clear to them there's always this level of friendship that makes barriers.
5.) Learn more. Lectures, books, and more educational opportunities await. Time for me to grab them.
6.) Volunteer. Nothing feels better than doing something for the community. I should be able to find at least ONE place to volunteer in.
7.) Do two daring tasks. Whether it be singing or dancing in a show where I have no ability to do so, I'm going to do it! (no illegal/immoral stuff)
8.) At least 80% completion of my thesis. Besides staying with the Physics program, I have to do well on my thesis and finish it before time runs out.
Share to us your eight New Year Resolutions!
Just comment below.
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