Physics - August 2007

My best example would be a door. Does it use more energy to open it or to push it open again when it is closing? The object would be the same weight and have the same mass.

2007-08-08 07:37:05 · 4 answers · asked by anakinjade1 2

a. accleration
b. inertia
c. velocity
d. monentum

2007-08-08 06:57:07 · 4 answers · asked by chato r 1

2007-08-08 06:51:26 · 2 answers · asked by Anonymous

AGE DIFFERENTLY AND BE LIKE IN A WHOLE NEW DIMENSSION BECAUSE IF YOU TRAVEL FAST ENOUGH TIME CAN NOT EFFECT YOU AS MUCH

FEEL FREE TO EXPRESS YOUR TOUGHTS

2007-08-08 06:28:04 · 6 answers · asked by scarface 2

2007-08-08 06:02:27 · 18 answers · asked by preethi shreeya 1

I'm making some custom mods to my 1985 Delorian.

2007-08-08 05:53:53 · 17 answers · asked by Joe 4

Im Talking About The Matrix, In Case You Didnt Know

2007-08-08 05:21:23 · 11 answers · asked by Scythe5150 1

A ball is projected horizontally from the top of a building. One second later another ball is projected horizontally from the same point with the same velocity. At what point in the motion will the balls be closest to each other? Will the first ball always be traveling faster than the second ball? How much time passes between the moment the first ball hits the ground and the moment the second one hits the ground? Can the horizontal projection velocity of the second ball be changed so that the balls arrive at the ground at the same time?

2007-08-08 04:55:07 · 3 answers · asked by Heller 2

If so, is there a special camera setting?

2007-08-08 04:31:46 · 23 answers · asked by Dr D 7

2007-08-08 04:10:31 · 6 answers · asked by ubaid ur rehman 1

2007-08-08 03:55:40 · 10 answers · asked by Anonymous

2007-08-08 03:46:06 · 8 answers · asked by b2bhai 1

A gun fires a bullet of mass 26 grams out of a barrel 32 cm long. The gun is attached to a spring. From the recoil of the spring and the masses of the gun and the spring we determine that the gun recoiled with a total momentum of 6.2 kg m/s.

* How do I find the velocity of the bullet as it exits the barrel?
* What was the avg force exerted on the bullet as it accelerated along the length of the barrel?
* What average force would be felt by the individual holding the gun for the time the bullet accelerates along the length of the barrel?

2007-08-08 03:41:54 · 2 answers · asked by benzene boy 1

How is a rubber band and a stick pen used to demonstrate the conservation of Force * a change in time?

2007-08-08 03:32:57 · 1 answers · asked by benzene boy 1

2007-08-08 03:00:13 · 2 answers · asked by Joey L 1

Ashamed to admit it, but if I ever knew I forgot. Why is light, radiowaves, X-Rays etc called electromagnetic radiation when they are not influenced by either electricity or magnetism?

2007-08-08 01:03:59 · 6 answers · asked by SteveA8 6

2007-08-08 01:01:09 · 3 answers · asked by duh 2

give me details information about environment and agrobases
projects.

2007-08-07 23:38:04 · 2 answers · asked by amit g 1

2007-08-07 22:12:51 · 10 answers · asked by Niranjana S 2

I feel solar power can be 10 to 20 times strong as it currently is
we need energy cells that can store solar energy and duplicate that energy to expand its potential. We need to use energy to get energy I dont know how kind of like an altnerator effect use the suns energy to create energy store it in a way that actually multiplies its yield is this possible?

2007-08-07 21:33:45 · 4 answers · asked by Anonymous

Assume the sheet is an infinite plane. Will the hole expand inwards or outwards?

2007-08-07 20:53:33 · 16 answers · asked by Stamatios D 5

If we created a large mirror, blasted it off FAR into space, then beamed information at it (perhaps via light pulses?) would the data be retrievable in the future? Alternatively, could we reflect the data off a planet in case we could not create a mirror large enough? This works the same way that looking at stars at a distance is 'seeing them millions of years in the past.'

Could we get a digital satellite's video feed, convert it to light pulses, beam it at the mirror, have it beam back to us and then ten, hundreds, or thousands of years into the future 'watch' what was happening in the relative past?

2007-08-07 20:14:52 · 3 answers · asked by Smoke[MaxX] 2

2007-08-07 19:24:48 · 9 answers · asked by Anonymous

2007-08-07 19:14:28 · 3 answers · asked by twinklecat 1

In other words, what is preventing us from removing any shadow of a doubt regarding it such that we can drop the word 'theory' from the equation?

2007-08-07 18:09:25 · 6 answers · asked by whitehorse456 5

if the solarheater is in good coundition

2007-08-07 17:55:19 · 1 answers · asked by ns v 1

2007-08-07 17:35:23 · 11 answers · asked by >D_ConTradictor< 4

Please help!?
A blue car with a mass of mcar = 2000 kg and a yellow truck with mass mtruck = 9000 kg enter an intersection. The truck comes from the south at vtruck = 7 m/s, and the car comes from the west. When the two collide they stick together and slide at an angle of q = 43° north of east.

What is the speed of the pair after the collision?

2007-08-07 17:03:36 · 4 answers · asked by Anonymous

I darkly remember an article about a company which builds electric motors which run fine even when you "drown" them in water, with anchors and everything being perfectly friendly with the element.

Does anybody know anything about that?

Thanks.

2007-08-07 17:02:35 · 3 answers · asked by Tahini Classic 7

A blue car with a mass of mcar = 2000 kg and a yellow truck with mass mtruck = 9000 kg enter an intersection. The truck comes from the south at vtruck = 7 m/s, and the car comes from the west. When the two collide they stick together and slide at an angle of q = 43° north of east.

What is the speed of the pair after the collision?

2007-08-07 16:35:07 · 1 answers · asked by Anonymous