Physics - November 2006

whats the difference between static friction and kinetic friction...i know it sounds easy but i have to explain it. and idk how. plz help.

2006-11-28 04:45:55 · 8 answers · asked by nybabyblu 6

2006-11-28 04:23:20 · 9 answers · asked by Anonymous

2006-11-28 04:21:36 · 3 answers · asked by jay 3

A gun fires a bullet. The bullet's mass is 5g and it travels at 20m/s. Thee recoil velocity of the gun is 2m/s. What is the mass of the gun?

I'm sure you need to set up an equation where momentum before =momentum after.
Please solve showing all your work,
Thanks

2006-11-28 04:10:23 · 4 answers · asked by sdeasfdwadf 1

Isaac Newton or Albert Einstein???

2006-11-28 04:05:37 · 7 answers · asked by Muhammad R 2

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2006-11-28 04:03:29 · 7 answers · asked by lilmixedmami82 1

Yeah, how come? Of to any explosion exists there has to be air and given that the big bang was an explosion, then air and space and time shall exist before it, am I not right?

Try to teach me how to understand correctly why time and space were created at the "time" of the big bang...

tnx in antecipation, kisses to the chicks and hugs to the boys,


ie - brazil

2006-11-28 03:58:23 · 5 answers · asked by Anonymous

2006-11-28 03:47:29 · 12 answers · asked by Anonymous

We use water pressure to turn turbines to generate electricity. Is there a method of harnessing electrical pressure (amperes) two create more electrical power?

2006-11-28 03:47:06 · 4 answers · asked by Pluto Corsini 2

2006-11-28 03:46:21 · 10 answers · asked by Anonymous

2006-11-28 03:45:49 · 16 answers · asked by Anonymous

2006-11-28 03:34:18 · 2 answers · asked by goring 6

2006-11-28 03:31:52 · 1 answers · asked by goring 6

2006-11-28 03:21:07 · 18 answers · asked by Anonymous

particle is attached between two identical massless springs on a horizontal frictionless table. Both springs swivel freely at the fixed pins with no friction. Wach spring has a natural length of L, a force constant k, and is unstressed when the particle is at the origin.

Looks like: (The 1s are supposed to be the two springs)
.
1
1
@
1
1
.

If the particle is constrained to move only along the x-axis, what is potential energy? (we don't care about the constraint force that keeps y=0 at all times)

The x-direction is beside the @ (---x---)

Also, find the net force actoin on the particle for the case above.

Help with any part of this would be wonderful, I am so lost.

2006-11-28 03:08:23 · 4 answers · asked by eeje2003 1

& the car drops 0.98 cm lower on its springs. Then they get out of the car and bounce it up and down. What is the frequency of the car's vibration if its mass (empty) is 3743 kg (in units of Hz)? Acceleration of gravity is 9.8 m/s^2.

2006-11-28 03:07:17 · 1 answers · asked by Dee 4

A 0.49 kg object connected to a light spring with a spring constant of 22.3 N/m osciallates on a frictionless horizontal surface. The spring is compressed 7.1 cm and released from rest.

1) What is the maximum speed of the mass in m/s?

2) What is the speed (in m/s) of the object when the spring is compressed 1.4 cm?

3) What is the speed (in m/s) when the spring is stretched 1.4 cm?

4) For what value of x does the speed equal 1/2 of the maximum speed (in units of cm)?

2006-11-28 03:05:34 · 1 answers · asked by Dee 4

2006-11-28 02:30:49 · 6 answers · asked by michelle i 1

2006-11-28 02:25:08 · 5 answers · asked by Anonymous

Lets say I have some crazy spaceship that can travel faster than the speed of light. Will the lights in the cabin still be able to be seen or will they be left behind? Its more of a question of is light a matter?

2006-11-28 02:03:04 · 10 answers · asked by Anonymous

He's friends with one of my friends and I went to his house on saturday. He showed us his nuclear fusion reactor and turned it on and everything. It looked like a small, glowing, gaseous ball in the middle of the chamber. Do you think he's actually creating nuclear fusion? If he is, he's the 18th person who has been able to do it outside of a government lab, and the only one to have done it out side of a laboratory all together. There are articles about him in newspapers all over the world. You can read one at http://www.freep.com/apps/pbcs.dll/article?AID=/20061119/NEWS03/611190639&template=printart. Or just create a search for : Thiago, nuclear fusion.

2006-11-28 01:46:48 · 8 answers · asked by amrmusicqueen 2

2006-11-28 01:42:42 · 9 answers · asked by stickyricky 3

(-3i+ 5j-6k) m/s and (-7i+8j-11k) m/s respectivly. find the minium sepration between them, and the time after which this occurs.

2006-11-28 01:39:04 · 2 answers · asked by anna s 1

2006-11-28 01:35:01 · 8 answers · asked by dayo a 1

Please give me a link where you got it.

2006-11-28 01:27:45 · 3 answers · asked by punjabi4life 2

is the o/p of a vco always a sqaure wave?

2006-11-28 01:19:49 · 4 answers · asked by prs1145 1

it cant have no batteries,motor and can have no more than one wheel(JUST FOR A SCIENCE PROJECT DOESNT HAVE TO BE A BIG A** CAR)

2006-11-28 01:05:44 · 2 answers · asked by Andrea D 1

2006-11-28 00:54:39 · 1 answers · asked by Anonymous

Anyone have a vague idea?

2006-11-28 00:48:49 · 18 answers · asked by Swan 1

The 8000 pound object is a cylinder that has a diameter of 38" and a length of 33"... Trying to put it in a square tank that is 48"x 48" x 48" and holds 479 gallons of water.

2006-11-28 00:43:46 · 4 answers · asked by riogrande_texas 1