Physics - January 2007

2007-01-29 00:27:51 · 11 answers · asked by val j 1

and how does this interaction affect the speed of light?

2007-01-29 00:26:02 · 3 answers · asked by Anonymous

2007-01-28 23:57:25 · 9 answers · asked by naveed 1

What is the theory behind such phenomenon? I was just wondering...

2007-01-28 23:56:59 · 9 answers · asked by oltroe 1

Explain the theory of relativity in your own way?

2007-01-28 23:42:32 · 17 answers · asked by Steven L 1

square : plane :: cube : ________

Note that that might not be actual size and it is not space.

2007-01-28 23:32:41 · 5 answers · asked by tjexplorer2013 1

it can even be a working model

2007-01-28 23:18:37 · 4 answers · asked by annite 2

2007-01-28 23:17:47 · 19 answers · asked by Anonymous

I want to know the theory behind the time machine.
Please answer only if you know about it correctly.
Do not give me your opinion.

2007-01-28 22:58:41 · 12 answers · asked by anuj 1

2007-01-28 22:55:14 · 5 answers · asked by neza 1

Dear / Respected Electronic friends, I'm not electronician but have towards it. Every time I bring a new unknown transistor without using datasheet of it how can I identify its emitter or collector? Please help me!

2007-01-28 22:45:55 · 3 answers · asked by Vertiiical Axiiis 2

Hi. Is it true that an object with higher Kinetic Energy would have higher temperature as compared to that which has lower Kinetic Energy? Thank you.

2007-01-28 22:40:17 · 2 answers · asked by schenker 1

Why is it that when you're inside a bus and the bus is in motion, whenever you toss a coin or a stone, that object will still be in the same place where it used to be?Why is it that it will not be moved backwards?

2007-01-28 21:35:12 · 11 answers · asked by p319 1

T = 2 pi sqrt(l / g)

How do you show that this equation is dimensionally consistent.

2007-01-28 21:22:56 · 3 answers · asked by Anonymous

2007-01-28 21:12:49 · 6 answers · asked by Bamse (Seba I ) 1

2007-01-28 21:12:20 · 7 answers · asked by Anonymous

2007-01-28 20:54:22 · 5 answers · asked by Anonymous

2007-01-28 20:39:38 · 4 answers · asked by ? 6

2007-01-28 20:12:03 · 1 answers · asked by noob 1

2007-01-28 20:02:56 · 5 answers · asked by minche 1

In his Mustang, Juan rounds a curve onto a straight section of country road while traveling at a speed of 17.0 m/s , only to find a fully loaded manure spreader completely blocking the road a distance 38.0 m ahead of him. Startled, he travels at a constant velocity for a period of reaction time of 0.850 s , then hits the brakes and slows at constant acceleration so that he manages to stop just short of the spreader.

With the same reaction time and acceleration, if he had roared around the corner at a speed of 28.0 m/s instead of 17.0 m/s, how fast would he have been going when he hit the spreader?


How much time would he have had for his life to flash before his eyes from the time he first sees the spreader until he hits it?

2007-01-28 20:00:23 · 1 answers · asked by erica s 1

The house fly freely moves around the mangoes. The question is....
We are in contact with the bus. so we too will move with a velocity of the bus. no issues in that. But the fly which is not in contact with the bus at times flies freely in air. How is it possible. will the fly have velocity more than the bus. If it doesnt have greater velocity it will obviously hit the back glass of the bus. how the fly can move freely in a bus speeding with such a great velocity. hope you understand my question.

2007-01-28 19:37:00 · 10 answers · asked by vinodh.mano 1

Scientis say that our univerce become by a big explosion. Will our univerce become small and than explode again ? Or can we say , we are in the first , second or last big bada bum.?

2007-01-28 19:29:02 · 2 answers · asked by hanibal 5

Sam heaves a shot with weight 16.0 lbs straight upward, giving it a constant upward acceleration from rest of 45.2 m/s^2 for a height 65.0 m . He releases it at height 2.14 m above the ground. You may ignore air resistance.

Part A: What is the speed of the shot when he releases it?

Part B: How high above the ground does it go?

Part C: How much time does he have to get out of its way before it returns to the height of the top of his head, a distance 1.84 m above the ground?

Take the free fall acceleration to be g = 9.80 m/s^2 for all parts of this problem.

Thanks guys, I really appreciate the help :D

2007-01-28 18:50:17 · 1 answers · asked by erica s 1

A coal-fired power station generates electrical power for the national grid.

Explain how the energy from the coal is used to generate electricity !?

2007-01-28 18:47:29 · 2 answers · asked by minche 1

A physics student with too much free time drops a watermelon from the roof of a building. He hears the sound of the watermelon going "splat" after a time interval of 2.42 s.

You may ignore air resistance. How high is the building? The speed of sound is 340 m/s .
Take the free fall acceleration to be g = 9.80 m/s^2.

2007-01-28 18:46:57 · 5 answers · asked by erica s 1

Large cockroaches can attain a speed of 1.70 m/s in short bursts. Suppose you turn on the light in a cheap motel and see one scurrying directly away from you at a constant speed 1.70 m/s as you move toward it at a speed of 0.730 m/s .

If you start a distance 0.990 behind it, what minimum constant acceleration would you need to catch up with it when it has traveled a distance 2.00 , just short of safety under a counter?

Thanks in advance guys :D

2007-01-28 18:09:34 · 4 answers · asked by erica s 1

2007-01-28 18:08:20 · 1 answers · asked by rina j 1

2007-01-28 18:03:53 · 2 answers · asked by Anonymous

the formation of condensation on a cold glass of water will cause it to warm-up faster than it would otherwise. i'm looking for the final temperature. ignore the effect of the surrounding.

2007-01-28 17:56:15 · 2 answers · asked by NuRz 1