Physics - September 2006

If it is surrounded by magnets of the same polarity, we are talking perfect calculations, will the stationary magnet spin to "stay away from the surrounding magnets" or will it just find an area of least resistance and stop....

2006-09-19 03:35:53 · 1 answers · asked by The Question Man 2

Is it true that sounds do not get lost but wander in universe? Are there any valid theories in physics which give an explanation to what happens to sounds after we produce them?

2006-09-19 03:06:37 · 3 answers · asked by Earthling 7

My physics teacher put this up on the forum for fun discussion. Here's my reply

No. As long as by acceleration you mean total acceleration in the vector. (I went on to explain using gravity and a rocket, but that won't fit in here)

He replied with

Think about a v vs. t graph that is not a straight line (recall that the slope of this graph represents the acceleration). Suppose from t= 0s to t= 3s the line is roughly straight and has a slope of 4. Then, from t= 3s to t= 6s, the line is again roughly straight but has a different slope of 2. Is the speed still increasing after t= 3s?

I say, yes the speed is increasing after t=3s (a=2) but what about at t=3s? there is obviously a negative acceleration there, but at that point surely the velocity is not still increasing because for the object to slow it's total acceleration must be negative. What do you think?

Greg

2006-09-19 02:55:22 · 13 answers · asked by Greg C 2

i am physics mad ! r u too ? i love to go in details

2006-09-19 02:42:14 · 4 answers · asked by catty 4

Is it analogous to the spin velocity of the earth and its Quasi equilibrium spin energy?

2006-09-19 02:27:41 · 3 answers · asked by goring 6

2006-09-19 02:23:47 · 7 answers · asked by alexissitaropoulos 1

I have two identical fridge magnets. They are the card type, and one sticks perfectly but the other doesn't! Why? Can I fix it?

2006-09-19 02:20:43 · 6 answers · asked by Anonymous

I have a light mounted on one end of a 3 car garage and want to mount a mirror to direct more light to the far door due to poor illumination.

2006-09-19 02:18:05 · 3 answers · asked by Anonymous

2006-09-19 02:16:50 · 13 answers · asked by Douglas 1

2006-09-19 02:02:22 · 5 answers · asked by student 2

How long would the noise remain in the jar for (it's airtight)? Where does the noise go if it doesn't stay in the jar?

2006-09-19 01:52:03 · 23 answers · asked by J C 3

2006-09-19 01:51:34 · 13 answers · asked by hoooleydoooley 1

2006-09-19 01:41:10 · 12 answers · asked by student 2

2006-09-19 01:08:46 · 15 answers · asked by healthy me 2

i know it's not because of the heat of the water, i tried it with cold water. and i also know it's not caused by the heat of my body, since i tried it when i was not in the shower! is it to do with the force at which the water comes down? pressure?

2006-09-19 00:48:43 · 7 answers · asked by abstract 3

2006-09-19 00:43:39 · 14 answers · asked by Alex S 2

2006-09-19 00:38:55 · 4 answers · asked by Chuck H 1

2006-09-19 00:01:19 · 12 answers · asked by gingerboy 1

We have plastic injection molding machines and frp tower is used to cool the hot water which flows through the mold and machines

2006-09-18 23:13:49 · 1 answers · asked by Sanjay B 1

2006-09-18 22:25:14 · 14 answers · asked by dhruv 1

2006-09-18 22:21:42 · 8 answers · asked by Ken 1

I know that it's possible to survive in a hard vacuum, disregarding the lack of oxygen; but how long would it be before the temperature of the human body reaches freezing, taking into account that heat loss will be fairly slow without a medium to transmit heat away?

2006-09-18 22:16:15 · 5 answers · asked by Anonymous

and in the case we don't have access to null (earth) forexample in the planes, what should we do?

2006-09-18 22:11:58 · 3 answers · asked by Anonymous

and in the case we don't have access to null (earth) forexample in the planes, what should we do?

2006-09-18 21:55:16 · 2 answers · asked by Anonymous

2006-09-18 21:42:48 · 4 answers · asked by Anonymous

My 15 year old has to do a project in physics, and he's interested in doing some study / simple experiment on solar energy. It need not be very high-tech. Any ideas ?

2006-09-18 21:29:35 · 5 answers · asked by Braveheart 2

2006-09-18 20:41:37 · 23 answers · asked by heirflick 2

someone told me he failed high school math...if this is true there is a possibily i can make a formula as brilliant as his... hhmmmm nice

2006-09-18 20:34:07 · 12 answers · asked by akoaypilipino 4

A coin spins due to the force of the hand that spinned it and due to the friction in the ground but finally stops spinning at a point of time. A ball spins in mid air due the force of the hand that threw it but finally stops and falls to the ground. Please explain the law of motion that makes the earth rotate on its own axis in a vacumn for millions of years. There is no friction of the ground, there is no force that threw it. But it does have a certain gravitational pull from the sun and all other planets around it. My doubt is how can gravitational pull of other planets and the sun make it spin round and round on its axis for ages? Also please explain the law of motion, with suitable easy examples so that even a kid can understand. What makes the planets rotate on its axis and revolve on its individual revolutionary path? Explain revolution and rotation in a much simpler way with examples? Thank you so much

2006-09-18 20:31:07 · 25 answers · asked by nikita 1

2006-09-18 20:16:12 · 8 answers · asked by Harsha V 1