Physics - May 2007

the clock on a fast spacecraft leaving earth measures proper time on earth if it was correctly synchronized to earth time before depature.

2007-05-08 21:53:33 · 5 answers · asked by >() 1

What is the formula for force if you are given stress and strain values.

Thanks

2007-05-08 21:43:36 · 5 answers · asked by !!!!!! 1

1. X-rays
2. infa-red Rays
3. ultra violet rays
4. visible rays

2007-05-08 21:38:21 · 6 answers · asked by ajith k 1

1. 69500 coulomb
2. 96500 coulomb
3. 59600 coulomb
4. non of the above

2007-05-08 21:35:22 · 9 answers · asked by ajith k 1

1. forces on the particles
2. position of the particles
3. mass o the particles
4. relative distance between the particles

2007-05-08 21:29:06 · 4 answers · asked by Anonymous

may visit the site to know about the other volumetric expansion of water : www.hypertextbook.com/physics/thermal/expansion/

2007-05-08 20:21:39 · 1 answers · asked by forum s 1

a)the gravity does not act on bodies moving with high speed
b)the thrust of the jet compensates the force of the gravity
c)the flow of air around the wings causes an upward force which compensates for the force of gravity
d)the weight of air whose volume is equal to the volume of plane is more than the weight of the plane

i guess the ans is b or c what do u think??

2007-05-08 20:13:04 · 8 answers · asked by chocky gal 2

2007-05-08 18:37:03 · 5 answers · asked by kjulcs 1

Determine the ratio of the relativistic kinetic energy to the nonrelativistic kinetic energy ( k=.5mv^2) for each of the following cases.

A) a particle with a speed of 1.25e-3 m/s

Krel / Knonrel

B) a particle with a speed of 0.985 c

Krel / Knonrel

2007-05-08 18:12:05 · 1 answers · asked by scarletandgray07 1

2007-05-08 17:38:23 · 4 answers · asked by Anonymous

The question is in the image
http://img300.imageshack.us/img300/5259/question01em4.jpg

--------
Please explain in detail, I very much appreciate your help

2007-05-08 17:03:00 · 1 answers · asked by Anonymous

A spring with spring constant k (N/m) is at its equilibrium length.
a) How much elastic potential energy is stored in the spring?
b) The same spring is stretched so that it is 5.0 cm longer than it was. How much elastic
potential energy is stored in the spring now?
c) A different spring with spring constant three times larger than that in part (a) is
compressed so that it is 4.0 cm shorter than its equilibrium length. How much elastic
potential energy is stored in this spring?

2007-05-08 17:00:24 · 1 answers · asked by Anonymous

WHY is the energy required to launch a rocket vertically to a height h , less than the energy required to put the same rocket into orbit at the height h?

2007-05-08 16:42:35 · 3 answers · asked by Dan 1

Refer to the Image ( http://img.photobucket.com/albums/v156/PNHTran88/01-3.jpg ). Block A has a mass of 2.00 kg and rests on a rough table and is connected to block B, which has a *** of 3.00 kg, after passing over an ideal pulley, as shown. Block B is released from rest. The coefficient of kinetic friction between block A and the table is 0.300. What is the acceleration of the masses?

Thanks a lot!!

2007-05-08 15:42:56 · 1 answers · asked by 123haha 1

2007-05-08 15:25:40 · 1 answers · asked by ghghghg 2

a. Einstein
b. Newton
c. Menke
d. Gell-Mann
e. Sagan

2007-05-08 14:50:07 · 3 answers · asked by Anonymous

It would only have to clear the ground by an inch.

2007-05-08 14:40:04 · 4 answers · asked by osok48 2

A car was traveling at 75km/minute northwest on a wet street when the driver spotted a wreck ahead. The driver hit his brakes and started to slow down. It took him .07 minutes before coming to a complete stop. What is the velocity of the car? How far did the driver travel before he stopped?

2007-05-08 14:39:59 · 2 answers · asked by random and unique 4

When a block slides into a spring, it is compressed a certain distance (x). The spring then stretches a certain distance (y). Why is y greater than x? What does this have to do with friction (without friction we would have simple harmonic motion)?

2007-05-08 14:34:21 · 2 answers · asked by Anonymous

i have this project on energy. and i need to know if radiant, sound, chemical and nuclear energy forms are potential or kinetic? can someone please help?
also what are some picture ideas that i could use for these types of energy

2007-05-08 13:39:55 · 8 answers · asked by Anonymous

When people hear that I am a bio major, they call me crazy. I just finished taking intro to physics and I'm going to call you guys crazy. I've spent more time studying for that class than any upper level biology course! What drove you to such madness?

2007-05-08 13:16:38 · 6 answers · asked by leikevy 5

Can you give me a good explanation for it?

2007-05-08 12:21:22 · 0 answers · asked by Sami 2

Can u please give me suptopics for GRAVITY
i.e. Univeral Gravitation , zero gravity, etc

please and thank u

2007-05-08 12:20:58 · 2 answers · asked by Jay a 2

A 26 kg block is in equilibrium on an incline of 15 degrees. Find the normal force of the incline on the block in Newtons.

2007-05-08 12:00:49 · 4 answers · asked by elliot s 1

9ft ramp 3 ft after ramp to stop and has to com to a complete stop before launching an egg over a 2 1\2 ft wall and to a target 10ft away please help me!!!

2007-05-08 11:56:52 · 2 answers · asked by Andrew b 1

if i have a car jack and put under the car(1000kg) near whichever tire. Is it right to assume that the overall force exerted on the car jack is equal to 1/4 of the weight of the car(2500N)?

2007-05-08 11:51:46 · 2 answers · asked by eddy1234 1

A hockey puck is hit on a frozen lake and starts moving with a speed of 21 m/s. Exactly 5.00 s later, its speed is 5.3 m/s. What is the average value of the coefficient of kinetic friction between puck and ice? how far does the puck travel during this 5.00 s interval?

2007-05-08 11:46:00 · 1 answers · asked by elliot s 1

is it 4?

2007-05-08 11:45:35 · 2 answers · asked by Anonymous

Christianity was the religion at those times the religion of barbarians while I slam was the religion of the scholars

I agree to certain extent europe has come out of the dark ages but only by the influence of mulsim culture and thought they imported during their foolish crusades

so why do they carry on with their dark age religion??

2007-05-08 11:42:40 · 14 answers · asked by Mysterious 1

I have to make an open-ended instrument and I want to make something similar to a windchime that you hit with a stick. I need to know the length I need to cut the pipes in order to play three notes. I want the notes to be 440HZ 523HZ and 659HZ. does the radius of the pipe affect it in any way. If someone can show me how you come up with the proper length to get these frequencies with work I will give them best answer. Thanks

2007-05-08 11:42:00 · 2 answers · asked by JB 2