Physics - January 2007

Okay my science teacher is an idiot. Can anyone explain to me Mechanical Waves and sound waves and stuff involving waves because I'm confused.

2007-01-29 14:13:24 · 2 answers · asked by cheerleadergal56 2

2007-01-29 13:49:03 · 1 answers · asked by Brian 2

i just need like a formula or something =/

2007-01-29 13:39:43 · 3 answers · asked by Maniaka 5

How would launching a model rocket show the three laws of motion each on individualy

2007-01-29 13:39:02 · 1 answers · asked by Rocker Chick 2

I understand that nature uses various systems such as the Fibonacci Series etc etc. But is there one mathematical system that nature prefers above all others at a fundamental level ?

2007-01-29 13:18:48 · 8 answers · asked by democracynow 2

2007-01-29 13:16:29 · 3 answers · asked by Anonymous

A ball is thrown straight up.

What will be the instantaneous velocity at the top of its path??? What will be its acceleration at the top????
Why will answers be different???

2007-01-29 12:55:08 · 3 answers · asked by Anonymous

Use
q=1/(1-e^(hv/kT))
and
E=Sum over all states i (Ne^(-Ei/kT))/q*Ei

2007-01-29 12:39:55 · 1 answers · asked by jenny w 1

2007-01-29 12:38:22 · 18 answers · asked by tammylgoolsby@sbcglobal.net 1

When you're inside a plane that is moving at a speed of 600 km/hr, and you jump straight up INSIDE the plane. Where will you land? My science teacher gave this question to the class and she said the answer is you will land at the same place you jumped from. She then explained that you're moving with the plane. I don't get it. When you jumped, your feet don't touch the floor of the plane. When you land down, aren't you suppose to be at a different place from where you started? Please can somebody explain to me? Thanks.

2007-01-29 12:36:29 · 16 answers · asked by Chi 2

2007-01-29 12:12:22 · 3 answers · asked by Anonymous

2007-01-29 12:06:53 · 3 answers · asked by >:] 5

If one were to travel at or approach the speed of light, why is it that time dialates? I can't quite grasp the idea that just because an observer is traveling faster than light that time expands. Please help! Example would be appreciated.

2007-01-29 11:55:33 · 7 answers · asked by Ghidorah 3

Used to find newtons
1N= 1kg x 1 m/s (second it squared)
So after that whole process do we move the decimal one space?

2007-01-29 11:39:24 · 6 answers · asked by >:] 5

Only serious asnwers by physics aficionados, and refrain from mentioning the obvious and referring to well-known axioms of classical physics.

2007-01-29 11:32:18 · 12 answers · asked by Anonymous

why is velocity more important than speed for a pilot?

using scientific terms?

2007-01-29 11:19:53 · 3 answers · asked by harajuku girl 1

Don't tell me it's 9.8m/s, because I figured its not that simple.

2007-01-29 11:13:00 · 2 answers · asked by 3.141592653589793238462643383279 3

everyone is seen it in movies, after explosions, bullets, airplanes, or anything that moves at great speed, how does it work? What´s a shock wave???

2007-01-29 11:04:18 · 8 answers · asked by Sleepless 2

2007-01-29 10:58:50 · 8 answers · asked by Ejsenstejn 2

On average, an ant can lift items much heavier than it's own body weight by a considerable degree. I know there is an answer involving physics; does anyone want to give me a detailed, comprehensive answer? What I do know is that if a human were that small it could easily do the same, and if an ant where big enough to trample a city it would collapse under it's own body.

2007-01-29 10:55:37 · 2 answers · asked by mjskywalker2002 2

2007-01-29 10:53:00 · 10 answers · asked by Zefram 2

2007-01-29 10:30:09 · 2 answers · asked by dj t 1

2007-01-29 10:27:12 · 8 answers · asked by Anonymous

you are 27m from the bus.
you run your max speed of 12 m/s and at that moment, the bus begins to pull away.
the bus has a constant acceleration of 1.11 (m/s^2) and continues to accelerate until it reaches its speed of 15m/s when it travels at a constant speed.

how long does it take the bus to reach your running speed?

write an equation for your position vs. time and one for the position vs. time of the bus...

ANY help would be REALLY appreciated...

2007-01-29 10:24:21 · 2 answers · asked by kacee 1

I'm in eighth grade chemistry & physics and this is the only problem i got left, it's a physics one,(acceleration, terminal velocity, gravity, stuff like the stuff on the worksheet...etc.), and there's no word bank, so any help is appreciated. I was thinking "projectile", but then they'd have to add an "a" after "is". Thx in advance, and please answer quickly.

2007-01-29 10:22:39 · 24 answers · asked by Anonymous

It is known that electromagnetic radiation doesn't need a medium through which to travel. How can you provethis fact?

Please answer as soon a possible. thanks so much!

2007-01-29 09:52:04 · 4 answers · asked by Anonymous

This is the typical Physics problem with the wire and boom connected to a wall with a mass hanging on the end of the wire.

Does the tension in the wire increase or decrease when the wire is connected higher on the wall (meaning the angle between the wire and the boom increases).

2007-01-29 09:46:26 · 1 answers · asked by on_the_bb 2

IT'S A SCIENCE QUESTION??? IF YOU KNOW IT..I WILL GIVE 10 POINTS TO YOU!

Jamal is in a car going north. he looks out his window and thinks that the northbound traffic is moving very slowly. Ellen is in a car going south. She thinks the northbound traffic is moving quickly. Explain why Jamal and Ellen have different ideas about the motion of the traffic?

10 points to you...;)

2007-01-29 09:38:58 · 13 answers · asked by Anonymous

is there a terminal velocity or maximum speed which can be reached in space?

2007-01-29 09:32:11 · 12 answers · asked by Taylor G 2

The temperature of a sample of copper is raised while a sample of silver is maintained at 20°C. At what temperature will the resistivity of the copper be two times that of the silver?

2007-01-29 09:27:17 · 2 answers · asked by Anonymous