Physics - April 2007

2007-04-09 12:06:33 · 1 answers · asked by tennischick746 2

Does this mean there are no forces acting on it? Give example supporting your answer.

2007-04-09 11:29:36 · 11 answers · asked by Anonymous

How long is the football in the air if it took 3.0 seconds to reach the top of its path?

2007-04-09 11:22:53 · 3 answers · asked by Anonymous

If Sam throws the baseball with higher speed:

A. how will the time it takes to hit the ground be affected?

B. how will the horizontal distance be affected?

2007-04-09 11:21:28 · 4 answers · asked by Anonymous

from were com from

2007-04-09 11:09:09 · 6 answers · asked by KAMAL A 1

I assume that the longer you keep the light on it will turn into thermal energy(heat)

2007-04-09 10:15:48 · 8 answers · asked by sexikim390 2

i need to know the answer asap!
what term describes both speed and direction of an object?

2007-04-09 09:39:54 · 8 answers · asked by Anonymous

001 An air puck of mass 0.166 kg is tied to a string
and allowed to revolve in a circle of radius
1.17 m on a horizontal, frictionless table. The
other end of the string passes through a hole
in the center of the table and a mass of 0.54 kg
is tied to it. The suspended mass remains in
equilibrium while the puck revolves.
The acceleration of gravity is 9.8 m/s^2
What is the tension in the string?
in units of N.
002 What is the horizontal force acting on the
puck? in units of N.
003 What is the speed of the puck?units of m/s.
004 A 6.95 kg bowling ball moves at 4.6 m/s.
How fast must a(n) 29.8 g golf ball move
so that the two balls have the same kinetic
energy? in units of m/s.
005 A racing car has a mass of 1660 kg.
The acceleration of gravity is 9.8 m/s^2 .
What is its kinetic energy if it has a speed
of 132 km/h? in units of J
006 Lee pushes horizontally with a force of 59 N
on a 38 kg mass for 14 m acros a floor.
Calculate the amount of work Lee did. in Joul

2007-04-09 09:30:02 · 2 answers · asked by elquida25 1

2007-04-09 09:26:55 · 3 answers · asked by Angel P 1

1. An old remedy for a pair of nested drinking glasses that stick together is to run water at different temperatures into the inner glass and over the surface of the outer glass. Which water should be hot, and which cold?

2. Why is it important that glass mirrors used in astronomical observatories be composed of glass with a low "coefficient of expansion"?

3. Consider a pair of brass balls of the same diameter, one hollow and the other solid. Both are heated with equal increases in temperature. Compare the diameters of the heated balls.

4. Suppose that you cut a small gap in a metal ring. If you were to heat the ring, would the gap become wider or narrower? ( Wouldn't it become wider because it's expanding outward?)

Thankss..

2007-04-09 09:17:35 · 2 answers · asked by Anonymous

2007-04-09 08:37:26 · 4 answers · asked by ♥ 6

2007-04-09 08:28:40 · 6 answers · asked by mikeydonatelli 6

2007-04-09 08:21:48 · 11 answers · asked by kancoyote 1

Infinite means unlimited, endless which means if there is no end how can you add more if it already was everything???

2007-04-09 08:14:16 · 9 answers · asked by Anonymous

I have heard everything from UFO's to giant whirl pools. Any thoughts?

2007-04-09 08:04:33 · 10 answers · asked by Bunny83 2

Isn't vacuum energy supposed to be the cost of having space?
So if you tap into it, and the energy that the universe uses to maintain space is used up, then wouldn't a proportional amount of space simply cease to exist?

Would this disappoearing space be at the site of the usage or at the edge of the universe, and would anything between the user and the edge seem to shift position to compensate for lost space?

2007-04-09 07:15:55 · 3 answers · asked by A Box of Signs 4

i'm having trouble with keeping the matches lit once they're inside the bottle. what should i do?

2007-04-09 07:02:41 · 6 answers · asked by Anonymous

like the distance from mercury to the sun is 41 million miles how is it in scientific notation??

2007-04-09 06:41:47 · 8 answers · asked by Anonymous

I would like to volunteer on the first time travel test.

2007-04-09 06:22:00 · 5 answers · asked by caramoanboy 2

The monkey insige glass shrere is orbiting arond the Earth
in geosycronous orbit.

2007-04-09 06:13:49 · 5 answers · asked by Alexander 6

2007-04-09 06:08:02 · 3 answers · asked by Theodore l 1

thanks

2007-04-09 05:59:33 · 2 answers · asked by Nov 1

2007-04-09 05:48:37 · 3 answers · asked by Anonymous

first question..
A long straight wire carries a steady current of 250 A. Draw a sketch showing the direction of the magnetic field caused by a 0.01 m segment at a point 1.7 m from the wire and perpendicular to the segment. Also, find the magnitude of the field contribution at this same point by the small segment.

second question..
A magnetic field of 35 T has been achieved at a laboratory studying superconductivity. What magnitude of current would be needed to achieve this field at a point 0.05 m from a straight wire.

2007-04-09 05:31:17 · 2 answers · asked by Mike 2

Dipoles in the physical science. I trying to find out

2007-04-09 05:14:37 · 2 answers · asked by Shamari W 1

I knew this from my childhood, when we used to put exhausted carbon batteries to the sunlight for a couple of hours, to discover that they have gained some charge, and could be used again.

Today I read in the newspaper that 2 lost young men lost in the mountains could re-charge the Ni-Cd battery of a cell phone by exposing it to the sunlight for 15 minutes. The battery gained enough charge as to let them send some SMS with their position, and finally they were rescued.

Can anyone explain me the physical / chemical basis for this phenomena?

2007-04-09 05:08:27 · 2 answers · asked by Anonymous

2007-04-09 04:09:56 · 13 answers · asked by GOC 1

give me a discussion about the density of water

2007-04-09 03:12:04 · 5 answers · asked by handren j 1

where q is charge and t is time

2007-04-09 02:58:07 · 3 answers · asked by nishany J 1

if you are provided with; -one news paper size: sheet of paper
-1 metre of light string
-a 30 cm plastic straw
-some cellotape & a raw egg. this is for physics test

2007-04-09 02:05:46 · 7 answers · asked by Christina 1