Physics - December 2006

2006-12-06 03:01:29 · 1 answers · asked by Anonymous

2006-12-06 02:55:14 · 2 answers · asked by Anonymous

2006-12-06 02:39:34 · 4 answers · asked by mercedes r 1

I have No idea, (sorry because my gramar, its not exelent)

2006-12-06 02:20:23 · 3 answers · asked by Luis M 2

Piease explain me how the energy derived from fusion reactor can be used in place of fossil fuels. whether the energy derived from reactor is going to be converted into electrical energy for the use of vehicles.

2006-12-06 02:10:07 · 3 answers · asked by shalin m 1

Piease explain me how the energy derived from fusion reactor can be used in place of fossil fuels. whether the energy derived from reactor is going to be converted into electrical energy for the use of vehicles.

2006-12-06 02:04:21 · 1 answers · asked by shalin m 1

B: holograms can only be viewed if the one correct frequency of light is shown on them; it is not an either/or decision. Right?

2006-12-06 02:04:05 · 2 answers · asked by sincere12_26 4

2006-12-06 01:32:08 · 4 answers · asked by Anonymous

I know that ice isn't as dense as liquid water, hence it floats in liquid water. What I don't understand is whether water takes up more volume in solid or liquid form. If you have ice in a cup of water the solid has displaced the same amount of water as it would if you just tipped that amount of liquid water in. This is the reason a glass wont overflow if the ice in it melts. However when it comes to global warming, if the icecaps melt, wont that liquid water just displace the same amount as it would when it was in solid form as it was already displacing water when it was solid. I read that liquid water only takes up 92% of the volume it did when it was ice but if this were true then wouldn' the sea level drop? Or isn't this taking into account the amount of ice actually sitting on land in Antartica and Greenland. Is what I've written write? If not, could you please explain to me in detail what actually occurs.

2006-12-06 00:57:17 · 8 answers · asked by Anonymous

2006-12-06 00:44:06 · 1 answers · asked by John Denholm A 1

I've tried SOOO many - Simon Singh, Hawking etc etc and I still don't even really get that 'stretched surface with a grid on it' analogy!

2006-12-06 00:36:38 · 17 answers · asked by stevedukenew 2

2006-12-05 23:52:44 · 6 answers · asked by Anonymous

Is it just 'cos everything around us is going the same speed so there's no point of reference like there is, say, on a fairground ride? I know it must be obvious, but it still gets me, this one.

2006-12-05 23:27:42 · 9 answers · asked by stevedukenew 2

2006-12-05 23:11:30 · 3 answers · asked by aravinth Physics 1

2006-12-05 21:13:52 · 6 answers · asked by Anonymous

How much work is done by the motor in a CD player to make a CD spin, starting from rest? The CD has a diameter of 12.7 cm and a mass of 14.8 g. The laser scans at a constant tangential velocity of 1.22 m/s. Assume that the music is first detected at a radius of 19.5 mm from the center of the disk. Ignore the small circular hole at the CD's center?

The answer that the book has is 0.0584 J
How do "they" come up with that crazy number??

2006-12-05 19:11:26 · 4 answers · asked by Moose 2

Why do people use transistor for switching while they could simply use a normal switch? and Why resistors are needed in transistor operation?

2006-12-05 19:09:49 · 7 answers · asked by iamlonely 1

water weight solid liquid

2006-12-05 19:07:25 · 13 answers · asked by greg h 1

2006-12-05 18:47:40 · 6 answers · asked by muhd i 1

2006-12-05 18:44:27 · 5 answers · asked by the white cloud 1

A grinding wheel, with a mass of 23.8 kg and a radius of 23.1 cm, is a uniform cylindrical disk.
(a) Find the rotational inertia of the wheel about its central axis.
kgm2
(b) When the grinding wheel's motor is turned off, friction causes the wheel to slow from 1200 rpm to rest in 59.6 s. What torque must the motor provide to accelerate the wheel from rest to 1200 rpm in 3.99 s? Assume that the frictional torque is the same regardless of whether the motor is on or off.
Answer for a)0.635 kgm2
Answer for b)21.3 N m

Above are the answers for this problem--i can't figure out how they came up with them--Can anyone help?

2006-12-05 18:42:05 · 3 answers · asked by John D 1

If there is an object on earth with a mass of 12.0kg, it would weigh 12.0kg * 9.81m/s^2 which would be 117N. Is this correct?

2006-12-05 17:45:52 · 8 answers · asked by billf39 2

2006-12-05 17:39:10 · 1 answers · asked by lye74 1

(a) The image formed by a plane mirror is of same size, erect and _______.

(b) If the angle between two plane mirrors is 50 degree, the no. of images for a point object in between them is _______.

2006-12-05 17:29:56 · 4 answers · asked by grandmaster_u_lost_this 1

a) what is the speed and direction of the wreckage?

b) How much Kinetic Energy was lost in the collision?

2006-12-05 17:10:44 · 1 answers · asked by suhel 1

A string carries a sinusoidal wave with an amplitude of 2.0 cm and a frequency of 100 Hz.

2006-12-05 17:04:07 · 1 answers · asked by uoprummel 2

Is it true that in Benjamen franklin's house the light bulbs never die? What would one of those cost on the market?

2006-12-05 16:52:22 · 3 answers · asked by Anonymous

2006-12-05 16:50:39 · 2 answers · asked by Stephanie 1

Temperature is the measurement of molecular velocity due to thermal energy. 0 degrees Kelvin ( -460deg. F) represents zero thermal energy in a body. You cannot get any colder than this. I've wondered, is there a limit to molecular velocity, an upper limit to temperature? How hot can a molecule get before it ceases to be what it is?

2006-12-05 16:48:52 · 4 answers · asked by Anonymous

Also does time slow down or speed up or stop and do you continue to age??

2006-12-05 16:39:14 · 12 answers · asked by th3evil0ne 1