Physics - February 2007

A) its temperature deacreases
B)its temperature increases
C)it absorbs heat
D)It gives off heat

2007-02-23 18:01:57 · 3 answers · asked by DARNELL B 1

2007-02-23 17:51:07 · 16 answers · asked by shadowfax 1

I am doing an essay on study the energy loss as a tennis ball rebounds from different surfaces. I am talking about Coefficient of restitution and time of impact.

2007-02-23 17:39:30 · 2 answers · asked by sourav_chatterjee1989 2

2007-02-23 17:38:17 · 2 answers · asked by Maisie F 1

2007-02-23 17:37:33 · 4 answers · asked by sweety 2

in which order and how to paste them . i I need an example for a board, for a "scientific written report"

2007-02-23 17:28:20 · 1 answers · asked by msshiftak 1

A rubber ball with a mass of 210 grams is thrown exactly horizontally from a height of 2 meters with an initial speed of 13 m/s. When it strikes the ground, it bounces off at the same angle it made when it landed. During the bounce, it loses 20% of it's kinetic energy to dissipative forces. How high does it go after bouncing?

I have this figured out but not sure if it is correct...if anyone can tell me how they would do it I would greatly appreciate it..thanks

2007-02-23 17:21:00 · 2 answers · asked by Kimmy D 1

If you point your finger to the sky, that direction goes on forever. It cannot end. Time could never have just started. It is infinite also. How can a human comprehend such things so mind blowing...? can anyone truly grasp the vastness of space and time...?
.

2007-02-23 17:18:36 · 7 answers · asked by Anonymous

I don't really expect an "answer," as this question apparently stumped even Professor Einstein. Just asking for thoughts or discussion.

2007-02-23 17:02:26 · 6 answers · asked by Pro bono publico 4

A 45.0-kg woman stands up in a 60.0-kg canoe of length 5.00 m. She walks from a point 1.00 m from one end to a point 1.00 m from the other end.
If you ignore resistance to motion of the canoe in the water, how far does the canoe move during this process?

2007-02-23 16:54:27 · 2 answers · asked by Paul Wall 2

i just dont understand.

2007-02-23 16:38:32 · 10 answers · asked by Anonymous

2007-02-23 16:27:55 · 4 answers · asked by M. C 1

2007-02-23 16:24:45 · 3 answers · asked by candidate 1

any applications of bimetallic strips

2007-02-23 16:24:08 · 3 answers · asked by shennan 1

In the diagram below which would have the greatest magnitude of acceleration? Is it the el;ectron because it has the smallest mass?

+++++++++
**p
*****n
********e
---------------
Ignore the " * " please.
the +++ is a positivly charged plate and the ---- is a negatively charged plate.
p = proton
e = electron
n = neutron

2007-02-23 15:41:03 · 5 answers · asked by Anonymous

2007-02-23 15:35:42 · 2 answers · asked by Anonymous

2007-02-23 15:33:33 · 6 answers · asked by Anonymous

a. A baseball bat swings and hits a ball.
b. An outfielder catches the ball.
c. A man places a bowling ball on a tall shelf.
d. The bowling ball falls down and shatters the floor below it.
e. A water molecule is ripped apart into its constiituents-hydrogen and oxygen.

2007-02-23 15:29:56 · 2 answers · asked by Kimmy D 1

2007-02-23 15:13:53 · 6 answers · asked by Lizzie 5

2007-02-23 15:08:48 · 20 answers · asked by ashleyprincess 1

Explain why the following reasoning is wrong.
"The sun attracts all bodies on earth. At midnight, when the sun is directly below, it pulls on an object in the same direction as the pull of the earth on that object. At noon, when the sun is directly above, it pulls on an object in a direction opposite to the pull of the earth. Hence, all objects should be heavier at midnight ( or night ) than they are at noon ( or day). "

2007-02-23 15:02:05 · 6 answers · asked by Anonymous

A supertanker is crossing a channel heading N25 degrees 45 minutes 00 seconds W at 28km/h. The tanker encounters a strong currect moving 6km/h towards the south west. Determine the effective speed and direction of the tanker

2007-02-23 14:59:39 · 2 answers · asked by Just Curious 1

Force between two point electric charges kept at a distance d apart in air is F. If these charges are kept at the same distance in water, how does thye force between them change???

2007-02-23 14:52:18 · 1 answers · asked by Black Eyes 2

A car (m = 710.0 kg) accelerates uniformly from rest up an inclined road which rises uniformly, to a height, h = 41.0 m. Find the average power the engine must deliver to reach a speed of 20.7 m/s at the top of the hill in 19.3 s(NEGLECT frictional losses: air and rolling, ...)

2007-02-23 14:39:12 · 2 answers · asked by Anonymous

Calculate the change in potential energy of a 88.6 kg man when he takes an elevator from the first floor to 22th floor, if the distance between floors is 4.53 m.

2007-02-23 14:38:26 · 1 answers · asked by Anonymous

A constant force of 32.7 N, directed at 28.7° from horizontal, pulls a mass of 15.3 kg horizontally a distance of 3.41 m. Calculate the work done by the force.

2007-02-23 14:37:36 · 1 answers · asked by Anonymous

2007-02-23 14:27:49 · 3 answers · asked by fiq_leo89 1

Given: 5000kg truck travellling 60km/hr
a. what is its momentum in terms or Kg m/s
b. if it were to be stopped by a constant retarding force in 10s, what must be its negative acceleration?
c. what is the retarding force?
what is the impulse on the truck?

2007-02-23 14:21:07 · 4 answers · asked by rhon v 1

why is the sky blue why not red or orange
this is a serious question
no rude remarks or answers please

2007-02-23 14:20:59 · 6 answers · asked by butterfly18 3

If you slosh water in a bathtub at the correct frequency, the water rises first at one end and then at the other. Suppose you can make a standing wave in a 150 cm long tub with a frequency of 0.30 Hz. What is the velocity of the water wave?

Please help me with this problem?
I don't understand it.

2007-02-23 13:50:18 · 1 answers · asked by swimmertommy 1