Physics - June 2007

please answer me , and don't give a link....

2007-06-06 22:41:38 · 0 answers · asked by Anonymous

A particle with rest mass m moves with speed 0.6c. Its kinetic energy is:

a) 0.18mc^2
b) 0.22mc^2
c) 0.25mc^2
d) mc^2
e) 1.25mc^2

2007-06-06 22:35:56 · 2 answers · asked by James K 1

2007-06-06 21:07:13 · 2 answers · asked by SEBESTIAN 1

people have been acessing this higher plane of existance for thousands of years, is it possible that this is what these extra dimensions are?

2007-06-06 20:34:16 · 2 answers · asked by higgins 1

You say science and faith are different, and that while science has proof and is hence true, faith hasnt, and may or may not be true.

Then isnt science itself based on faith? You say that energy + mass cant be created nor destroyed, and your all theories are based on this. Isnt this just faith?

2007-06-06 20:30:57 · 13 answers · asked by Karoly 2

I need to figure out how much weight a 55 gallon drum (water tight) can keep afloat in water.

2007-06-06 20:08:22 · 2 answers · asked by Arch Bishop Don Magic Juan 2

say may be for short wave transmitter, medium wave and frequency modulation

2007-06-06 18:34:50 · 2 answers · asked by ngafuchati 1

2007-06-06 18:22:13 · 5 answers · asked by suresh noname 1

We're studying relativity in physics right now and I thought that this would be an interesting question. If we could travel fast enough, would we ever get any older?

2007-06-06 18:20:05 · 14 answers · asked by Greg 1

heat up hotter and faster than the food that is on or in it ??

2007-06-06 18:17:05 · 10 answers · asked by burlingtony 2

Can someone go here and help me answer the 5 questions? I really dont understand!
http://www.upscale.utoronto.ca/cgi-bin/ErrorAnalysis/Decay.cgi

I think you need to read the "Using the Gaussian" section to understand.
http://www.upscale.utoronto.ca/GeneralInterest/Harrison/ErrorAnalysis/

THANKYOU !!

2007-06-06 18:13:59 · 2 answers · asked by Subaki 1

a chile blows up a balloon with air. the balloon will not flaot to the ceiling because
A. the balloon and the air it contains werigh more than the air displace by the balloon
b. the eright of the balloon is less than the weight of the air displaced by the balloon
c.the pressure of the air inside the balloon is greater than the atmosphereic pressure
d. the pressure of the air inside the balloon is less than the atmospheric pressure
e. the temperature of the air inside the balloon is less than the atmopheric temperature

heat flows into a gas piston and the gas performs some work on its suuroundings. the amount of work done is less than the heat added. in this situation
a. the internal energy of the gas decreased
b. the internal energy of the gas did not change
c. hte internal energy of the gas increased
d. the gas experienced a phase change
e. energy is not conserved and so it cannot happen

2007-06-06 17:53:42 · 3 answers · asked by Anonymous

2007-06-06 17:21:30 · 7 answers · asked by ^&**Blast**^& 3

1)An object is placed 72 cm away from a glass surface of a container having water. At what point will the object appear from the glass?

2)What is the fractional change in wavelength of light when it passes through water from glass?

2007-06-06 17:05:57 · 3 answers · asked by Akilesh - Internet Undertaker 7

We made a catapult from wood and springs. we attached the arm toa doorhinge and then attached springs further up. we pulled it back to release it and we need to knwo the physics of it. we are launching something just under a pound heavy and it has to go a distance of fifty meters. so we have delta x = 50m, m = 1 pound (needs to be in kilograms). we need the velocity and the angle we released it at was 45 degrees. is there any more information needed? please let me know if there is. if there isnt, what calculations to i need to make?

2007-06-06 16:36:58 · 4 answers · asked by tywan38 2

I am hooking a rain barrel (50 gal plastic drum) to a soaker hose for the garden. I assume that the water pressure at the end of the hose will decrease proprtionally to the volume in the barrel. Correct, or does the spigot keep the pressure constant?

Assuming that pressure decreases, and that I want it to remain constant, and also assuming that the pressure from a 5 gal bucket is sufficient, would feeding the bucket from the barrel via a direct connection multiply the pressure coming out of the bucket, or would the press. remain the same as the bucket alone?

Would it matter if the connection went from barrel bottom to bucket top or bucket bottom? O-o_ O_o_ (O=barrel, o=bucket, -_= water lines) Barrel will be 3' off the ground, so bucket can be below barrel or even with it.

Both containers will be vented.

If not enough info, ask what you need to know.

2007-06-06 14:01:53 · 3 answers · asked by Anonymous

Explain why a DC system cannot use an efficient stepped up voltage for long distance transmission.

kind of lost here. How come AC can't do it?

2007-06-06 13:48:34 · 7 answers · asked by cindy m 1

the object of the experiment is to design and build a device that uses the potential energy stored in a mouse trap to put out the flame of a standard birthday candle form a distance of one meter.
we can use whatever materials we would like as long as they're "safe" like no knifes or anything. lol
does anyone have any creative ideas on how i could do this? i know water is one idea but its no very creative. anyy ideas would be great!

2007-06-06 13:42:43 · 1 answers · asked by Anonymous

Determine the volume of a rectangular shape whose dimensions are 44 mm, 54 cm, and 0.64 m.

2007-06-06 13:25:24 · 5 answers · asked by Anonymous

2007-06-06 12:51:06 · 4 answers · asked by Anonymous

light ray leaves glass and enters air at a non-zero angle?

2007-06-06 12:43:45 · 3 answers · asked by bkelton09 1

2007-06-06 12:38:09 · 11 answers · asked by Anonymous

2007-06-06 12:38:08 · 1 answers · asked by Breyonna K 1

2007-06-06 12:30:04 · 4 answers · asked by Anonymous

2007-06-06 11:35:40 · 3 answers · asked by gymprincess39 1

2007-06-06 11:19:36 · 3 answers · asked by Alexander 6

The need instead to go down, and begin running
down the moving ladder with speed 2 m/s wrt the ladder.

Length of escalator is 50 m, inclination is 30 deg,
and speed is 1.5 m/s.

How much extra energy did escalator waste due
to their mistake?

Combined mass of all three is 200kg.

2007-06-06 10:51:23 · 2 answers · asked by Alexander 6

, the bus takes off with a constant acceleration of 1.20 m/s^2...

--- the position of the lady as a funtion of time is 6t & the bus is
12 + .6t^2

---the times when she catches the bus are 2.77s & 7.23s

i got those two things right but i cant get the A & B right help..

Find....

a. the place where she catches the bus.
b. find the speed of the bus when she catches the bus.

2007-06-06 10:34:46 · 1 answers · asked by a.n. 1

A swimmer witha mass of 75kg dives off a raft with a mass of 500kg. If the swimmer's speed is 4m/s immediatley after leaving the raft, what is the speed of the the raft?

2007-06-06 09:19:14 · 3 answers · asked by Becca B 1

2007-06-06 08:13:49 · 6 answers · asked by armyoflight45 2