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Physics Questions Blog
Tuesday, 8 January 2008
Honors Physics Capacitance Blog

Answer the question below.  For help, see pages 513-517 text.

 

Name 3 ways in which the capacitance (ability to store charge) of a capacitor can be increased. 


Posted by georgecelona at 3:17 PM EST
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Monday, 7 January 2008
Honors Voltage Blog

State clearly the difference between

a) Electric Potential and Electric Field

b) Electric Potential and Electric Potential Energy

Answer in the space below. 


Posted by georgecelona at 9:44 PM EST
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Thursday, 3 January 2008
General Electrostatics Blog 2

Recall the demonstration in class today with the metal ball hanging from the string.  There were 4 parts:

1:  PVC pipe was rubbed with fur

2:  Pipe was brought up to ball and attracted it.

3.  Ball touched pipe and immediately repelled

4.  I touched ball and it started attracting again.

Explain how charge was transferred in each stage of this demonstration.  Use the correct terms of conduction, induction, and friction when doing your explanation. 


Posted by georgecelona at 3:16 PM EST
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Honors Electrostatics Blog

Honors Electrostatics Blog

Please answer the questions below.  Additionally, if you want to use this space to discuss the demo, please feel free.

 

1.  If you charge a pocket comb by rubbing it with a silk scarf, how can you determine if the comb is positively or negatively charged?

 

2.  Why does a shirt or blouse taken from a clothes dryer sometimes stick to your body?


Posted by georgecelona at 3:14 PM EST
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Wednesday, 2 January 2008
General Physics Electrostatics Blog

Please answer the question below.

 

If you charge a pocket comb by rubbing it with a silk scarf, how can you determine if it is positively or negatively charged?


Posted by georgecelona at 2:46 PM EST
Updated: Wednesday, 2 January 2008 2:47 PM EST
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Monday, 17 December 2007
Honors and General Mixed Torque Blog

Hi all,

This blog is meant for both honors and general classes tonight.  On page 3A of your packet, you will see question #3, which deals with a broom.  Answer the question in the space below, and then reply to at least 1 other student's answer.  You can comment on someone from your own class, or someone from the other class. 


Posted by georgecelona at 3:44 PM EST
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Wednesday, 12 December 2007
Honors Torque Blog

Posted by georgecelona at 4:40 PM EST
Updated: Wednesday, 12 December 2007 4:40 PM EST
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Physics Center of Gravity Blog

 

Posted by georgecelona at 4:35 PM EST
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Monday, 10 December 2007


Posted by georgecelona at 3:21 PM EST
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Thursday, 29 November 2007
Honors Circular Motion Blog

Please answer the following question.

1) Will the acceleration of a car be the same when it travels around a sharp curve at 60 km/hr as when it travels around a gentle curve at the same speed? Explain.


Posted by georgecelona at 4:29 PM EST
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Monday, 19 November 2007
General Physics Blog

Please answer the following question below:

If you were in a car that was out of control and had to choose between hitting a concrete wall or a haystack, common sense tells you to choose the haystack. Explain using terms discussed in today's class why hitting the haystack is the smarter idea.


Posted by georgecelona at 9:56 AM EST
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Friday, 16 November 2007
General Physics Homework Questions

Please answer the following questions on a separate sheet of paper to hand in on Monday. Answers are posted in bold so you can check your work. Your homework must show ALL WORK.

1. Batman is chasing after some unlucky villains on a rooftop 40 m above the ground. If the villains jump to the next rooftop which stands 44 m above the ground, what jumping velocity will Batman need to inflict some justice? (vi = 8.85 m/s)

2. As a prank, you decide to stand on the roof of Springfield High School (20m) and wait for Mr. Bonnette to walk by below you. You heave a large water balloon at an angle of 10° with a velocity of 10m/s (bad idea). Since Mr. B is 1.8m tall, what would be the velocity of the balloon if he were to be hit in the head? (vf = 21.37 m/s)

3. You are playing leap-frog. What minimum velocity would you need to leave the ground with if you had to jump over your friend 0.5 m high and pass with a speed of 0.2 m/s? (vi = 3.14 m/s)


Posted by georgecelona at 3:15 PM EST
Updated: Saturday, 17 November 2007 3:32 PM EST
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Thursday, 15 November 2007
Honors Physics Blog
Refer to number two in the preliminary questions of the impulse and momentum lab experiment. Answer below.

Posted by georgecelona at 2:51 PM EST
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Wednesday, 14 November 2007
Honors Physics Blog
You are talking to your grandfather and he mentions that cars aren't made like they used to be made. He says that new cars are considered "totaled" in a minor car accident when back in his day, there was only a scratch. Explain to your grandfather why newer cars are safer for the passengers than older cars. Remember, you are talking to your grandfather and not to a person who has an extensive knowledge in physics.

Posted by georgecelona at 3:52 PM EST
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General Physics Blog

Please respond to all questions below:

1) If the kinetic energy of an arrow is quadrupled, by what factor has its speed increased?

2) If the velocity of an arrow is quadrupled, by what factor does its kinetic energy increase?

3) If you do 100 J of work to elevate a bucket of water, what is its gravitational potential energy relative to its starting position?

4) What would the gravitational potential energy be if the same bucket was raised twice as high?


Posted by georgecelona at 3:45 PM EST
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Monday, 12 November 2007
Choice of Research Topics Blog

Hi all,

Once you have chosen your group topic for the research report, you may post your choice here.  You only need 1 response for the group.  However, please indicate whether you are in the 1st block regular physics class or the 4th block honors class. 


Posted by georgecelona at 3:19 PM EST
Updated: Tuesday, 13 November 2007 2:52 PM EST
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Tuesday, 30 October 2007
Honors Formal Lab Report Assignments

 

Names

FormalKey: 
    
CARSON, RYAN51constant and non constant speed
DAVIS, ALLISON42graph match
NOCE, JOSEPH33bull's eye
WILLIAMS, REBEKAH24Newton's 2nd Law
WITHELDER, MEREDITH15Slip-Stick
    
BROUSSARD, VALERIE RUE5  
RANALLI, GINA4  
VUCELICH, ROBERT J3  
    
DOUGHERTY, KEVIN2  
DUFFY, JOSEPH P1  
LIEB, GREGORY5  
MEWHA, RYAN4  
    
ANTONIK, NICOLE3  
BURNS, BRITTANY2  
MCCLAIN, NICOLE1  
    
CAPOFERRI, STEPHANIE5  
GRONLIE, DANIELLE4  
KRAJEK, DEREK3  
MADARY, JONATHAN AARON2  

Posted by georgecelona at 3:05 PM EDT
Updated: Tuesday, 30 October 2007 3:07 PM EDT
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Monday, 29 October 2007
General Physics Blog

Answer the following question and respond to another student's post.

You are driving down the highway and a bug splatters on your windshield. Which is greater: the force of the bug on the windshield, or the force of the windshield on the bug? Which effect of the force (acceleration) is greater: the deceleration of the bug or the deceleration of the car? Why?


Posted by georgecelona at 3:37 PM EDT
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Monday, 22 October 2007
Honors Physics Blog

Please answer the question below by responding to the blog, and then comment on at least 1 other student's answer.

1) When a cannon is fired, how does the size of the force of the cannon on the cannonball compare with the force of the cannonball on the cannon? How does the acceleration of the cannon compare with that of the cannonball? Defend your answer.


Posted by georgecelona at 3:39 PM EDT
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Thursday, 18 October 2007

Please answer the question below by responding to the blog, and then comment on at least 1 other student's answer.

 

1) A passenger sitting in the rear of a bus claims that she was injured as the driver slammed on the brakes, causing a suitcase to come flying toward her from the front of the bus. If you were the judge in this case, what disposition would you make? Why?


Posted by georgecelona at 2:42 PM EDT
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