Physics - January 2007

Does a compressor make cold or remove heat?

2007-01-02 13:01:29 · 9 answers · asked by Jack M 1

I've been absent from my physics class for two weeks, and I'm without a textbook. Can someone please help with this? If a yardstick is balanced at the center, (18 inches), and a .1 pound mass is positioned at the 4 inch mark, and a .3 pound mass is positioned at the 6 inch mark, where should a .3 pound mass be positioned for the yardstick to be balanced and perfectly straight across?

2007-01-02 13:01:15 · 1 answers · asked by F E 2

do any of yall know some interesting science experiments involving foot ball?????

Please Help

2007-01-02 12:56:07 · 7 answers · asked by man in black 2

2007-01-02 12:53:15 · 3 answers · asked by boom boom 1

It is a hard anwser to find!!!!help I want to win the question of the week.

2007-01-02 12:33:19 · 9 answers · asked by J T 1

2007-01-02 12:19:28 · 16 answers · asked by vanessa p 2

2007-01-02 12:06:58 · 9 answers · asked by chasity g 1

String theory predicts all material in the galaxy from the smallest subatomic particle to the grandest star is made of strings. The string vibrate like music note giving atoms their uniqueness. Most physicist don't accept this theory since their are five formulas. The formulas are quite similar. Is it possible this five formula represent five equally similar worlds us ours; but except for a small insignificant difference like a parallel world.

2007-01-02 12:01:25 · 9 answers · asked by Anonymous

I would like to know what devices would best be used to gently
bend a path within quantum flow that could pinch propell forth
a space craft?

2007-01-02 11:54:13 · 1 answers · asked by ripplefix 2

Someone said the pull of gravity between the earth and the moon balance out at 90% of the distance to the moon. I know the force of gravity is about 1/6 that of the earth, why isn't the balance point at about 83.5% of the distance?

2007-01-02 11:49:16 · 10 answers · asked by Anonymous

1)When u climb a mountain your eardrums “pop” out ward as the air pressure decreases. When you come down they pop inward as the pressure increases. At the sea cost there is cave that can be entered only by swimming through a completely submerged passage and emerging into a pocket of air within the cave. The cave is not vented to external atmosphere. As the tides comes in the water level in the cave rises and your eardrums pop. Is the popping analogous to wht happen as you climb up or down a mountain? Give ur reasoning..

2)The kinetic theory assumes that a gas molecular rebounds with the same speed after colliding with the wall of container. Suppose the speed after the collision is less thn that before the collision would the pressure of the gas be greater thn equal to or less thn that predicated by kinetic theory? Give reason.

3)a)which if either contain a greater number of molecular a mole of hydrogen or mle of oxygen? B) which one has more mass? Give ur reason?

2007-01-02 11:32:54 · 1 answers · asked by Kshitil 1

At what distance does the force of gravity between the moon and earth negate each other and equal zero. give answer in percentage or fraction ie 60% of earth & 40% of moon or 50%of moon 50 %of earth

2007-01-02 11:31:29 · 2 answers · asked by Anonymous

2007-01-02 11:29:01 · 3 answers · asked by Paul P 1

2007-01-02 11:28:15 · 3 answers · asked by lindi 2

2007-01-02 11:27:11 · 3 answers · asked by lindi 2

If you want to cause a nuclear explosion:

It takes protons (or electrons, please answer) and shoots them at an atom. The atom then, once it is split, it releases a great amount of atomic thermal radiation.

If you want to fuse:

I you want to mix atoms such as atom 114 then you would shoot out calcium and mix it with the element Plutonium and they fuse together with all the friction/radiation.

2007-01-02 11:25:10 · 5 answers · asked by Anonymous

Would you justify going with a 16 parallel GPS if the 12 parallel one seems better in other ways, like software, electronic compass, etc?

2007-01-02 11:21:18 · 1 answers · asked by STFU Dude 6

2007-01-02 10:58:30 · 5 answers · asked by chris 1

1)A tightly sealed house has a large ceiling fan that blows air out of the house and into the attic. This fan is turned on, and the owners forget to open any window or doors. Wht happen to the air pressure in the house after the fan has been on for a while, and does it become easier or harder for the fan do its job? Explain.

2)Above the liquid in a can of hair spray is a gas relatively high pressure. The label on the can including the warnings “Do not store at high temperature”. Use the ideal gas law and explain why the warning is given.

3)Atmospheric pressure decreases with increasing altitude. With this fact in mind, explain why helium filled weather balloons are underinflated when they are launch from earth.

4)If the temperature of an ideal gas is doubled from 50to 100 degree C. does the average translational kinetic energy of each particularly double?

2007-01-02 10:49:34 · 1 answers · asked by krish s 1

2007-01-02 10:06:23 · 12 answers · asked by kelsey 2

my boyfriend and i have started to go farher in our relationship but i kinda want to slow things down and get to know him better...is this a good idea..and how do i tell him i want to take it a little slower?

2007-01-02 09:58:38 · 15 answers · asked by Taylee L 1

2007-01-02 09:45:09 · 7 answers · asked by Nixxon 1

Goal: have a device that protects the (non-boiled) egg.
Must be less than 70 cm, and the mass must be less than 300 grams.
Can't use more than 1 linear foot of tape. Can't use plastic, batting, or cotton balls.
Has to be reusable.
Limited to using the following items: yarn/string, straws, glue, any amount of duct tape, toothpicks, rubber bands, cardboard, fabric, & either 1 non-helium iflated ballon, or 2 non-inflated balloons.

2007-01-02 09:32:07 · 8 answers · asked by Anna B 1

You are riding your bike down a hill, then up a small hill to a level road...

Where would you apply a great force to the pedals so that the direction of the bike stays the same?

2007-01-02 08:19:06 · 2 answers · asked by jewelsD_23 1

what would an observer experience on such a planet, and is such a condition possible?

2007-01-02 08:18:55 · 10 answers · asked by Atticus 2

On a level street why does it take more force to start the bike moving than it does to keep it moving?

2007-01-02 07:58:03 · 3 answers · asked by jewelsD_23 1

Any thoughts on how it was supposed to work, and be selective and timed etc?

2007-01-02 07:56:15 · 1 answers · asked by Chris cc 1

2007-01-02 07:39:23 · 5 answers · asked by martin48732 1

i mean...WHAT DO THEY THINK? Some1's gonna capture them or kidnap them or what?....i mean...its just helping others...at least they can open thier email msgs...they can help someone...some ppl are very knowlegeable n just keep away from all communications!!! its RIDICULOUS!

2007-01-02 07:24:38 · 4 answers · asked by Anonymous

Does the the original water become less satuated and the salt spreads back out? or is the orginal water remain satuated and the freah water remain fresh becoming just a mixture?

2007-01-02 06:51:29 · 3 answers · asked by cnlnetcom 1