Physics - December 2007

2007-12-08 02:18:47 · 6 answers · asked by Vagdevi.M.S. 1

that is:
radiowaves
microwaves
infra-red
visible light
ultraviolet
x-rays
gamma rays

please dont use big words XD thankyou x x x

2007-12-08 02:11:27 · 2 answers · asked by Anonymous

Last weekend there was an ice storm and my family was out of town. In front of our front door a huge mound of ice has collected since and is very hard to move. Because underneath the ice is concrete and we can't use salt (it eats the concrete) we have tried hot water, cold water, a hair dryer and a small candle lighter. If anyone has an idea it would be greatly appreciated.

2007-12-08 01:55:36 · 20 answers · asked by Bored 4

...scientific equation that links to both of them as I've found and there's a missing peice to the equation and it works without this peice of the equation and when explained it's understandable, but I'm sort of a perfectionist and I want to find out the missing peice of the equation. Now I know what I need to do to find the missing peice of the equation but to do this I'd need a camera that can magnify an object so that it can see the atoms of it and that can also film them going in slow motion while the object is going at high and low speeds past it but the problem is I'm only 15 and have none of the money to figure out the rest of this equation.
Any ideas on how I can figure out the rest of this equation without buying expensive equitment?
And I'm not telling anyone the equation until it's complete before anyone asks for it.
Before anyone says this is mad I've been following the research that Estien did on time travel.

2007-12-08 01:19:15 · 16 answers · asked by Lily R 6

Which actually works

2007-12-08 00:39:29 · 3 answers · asked by Anonymous

Do you know any websites that might help me find the answer if it is too complex to post here?

2007-12-08 00:38:02 · 4 answers · asked by Anonymous

I noticed that when carrying my baby sis around when she has just waken up from sleep or a nap she seems heavier than when she is wide awake. Is that because of energy?

When I'm tired I feel really heavy too, you know that saying about dragging yourself around in the morning.

2007-12-07 20:01:15 · 10 answers · asked by o0♥0o 1

2007-12-07 19:00:42 · 5 answers · asked by Anonymous

What elements are involved in this process inside the Sun? What happens to the missing mass in the process?

2007-12-07 17:43:21 · 7 answers · asked by Anonymous

Yes, I know this sounds stupid, but there is a disagreement to be settled, and *SERIOUSLY* scientific info only PLEASE.

I don't mean just barely. The debate was over if you can actually get tan while clouds are over the sky, not just the harmful UV rays.

2007-12-07 17:28:49 · 11 answers · asked by Learning Conformity 5

2007-12-07 17:04:31 · 9 answers · asked by EMAD A 1

An ice-cube tray contains 0.356 kg of water at 18.0 C

How much heat must be removed from the water to cool it to 0 C and freeze it? Express your answer in joules.

2007-12-07 16:55:42 · 4 answers · asked by kiranrai98 1

what I'm actually looking for is that what happens to the light beam, (or the particles of light), when passing through a colored glass?

2007-12-07 16:51:08 · 6 answers · asked by Kevin J 1

physics question

2007-12-07 15:59:29 · 8 answers · asked by Denisse m 1

A bus driver approaches a railroad crossing, hears a train whistle, and then hears the train whistle’s pitch become lower. Should she be concerned about stopping for the train?

2007-12-07 15:21:17 · 3 answers · asked by Anonymous

Is the water that reaches the shoreline the same water that was above the earthquake?

2007-12-07 14:29:08 · 5 answers · asked by Anonymous

2007-12-07 13:27:54 · 18 answers · asked by kiki p 1

2007-12-07 13:22:49 · 5 answers · asked by kiki p 1

This is a theoretical question for a chemistry course I am taking. Help Please! Thanks

2007-12-07 12:40:26 · 4 answers · asked by Anonymous

I know electrical conductivity and electrical resistivity are inversely proportional but is this literally or not? Which is to say, are they inversely proportional as in, as one increases the other decreases OR are they inversely proportional as in, if electrical conductivity is 5, then electrical resistivity is 1/5?

2007-12-07 11:42:44 · 5 answers · asked by pulga0888 2

Suppose there are two cars moving toward each other, the red car honks and the sound wave gets reflected by the white car. Is the frequency of sound wave reflected by the white car the same as the frequency perceived by the driver of the white car?

2007-12-07 11:22:37 · 8 answers · asked by 3.141592653589793238462643383279 3

Q: You have an inclined plane with a pulley on top. Two masses are coming off the pulley. The 10kg mass is on the slope. The 50kg mass is hanging off the side of the inclined plane. The angle of the slope is 30 degrees. The coefficent of static is .6 and the coefficent of kinetic is .5
Does it move? If yes, then find the acceleration.

I have NO idea how to do this. I think that I get it in class, but then the homework never makes sense. If someone could talk me through this, that would be great.

2007-12-07 10:32:41 · 2 answers · asked by orlandoluvr_1990 3

Due to friction with the air, an airplane has acquired a net charge of 2 x 10-5 C. The plane moves with a speed of 2.83 x 102 m/s at an angle θ with respect to the earth's magnetic field, the magnitude of which is 5.01 x 10-5 T. The magnetic force on the airplane has a magnitude of 5.7 x 10-8 N. Find the angle θ.

There are two possible angles. Enter the one in the first quandrant. Enter "deg" as your units; for instance, if your answer is "45°" , enter "45 deg."

2007-12-07 10:20:00 · 2 answers · asked by Bang L 1

how long , T(tot), does a mass m with initial velocity =0, take to fall to the surface of a planet (of mass M and radius r) from a height H above the surface , in a non-constant field given by GMm/(r+s)^2?

(where s is the height above the surface at any time t)

this is a lot more difficult than it looks!

full points for an elegant solution.

(full working details if you can thanks)

2007-12-07 09:58:37 · 2 answers · asked by Anonymous

A 6.8 kg laundry bag is dropped from rest at an initial height of 2.50 m.

(a) What is the speed of Earth toward the bag just before the bag hits the ground? Use the value 5.98 1024 kg as the mass of Earth.
____________m/s

(b) Use your answer to part (a) to justify disregarding the motion of Earth when dealing with the motion of objects on Earth.

2007-12-07 09:46:49 · 1 answers · asked by georgy g 2

2007-12-07 09:36:13 · 2 answers · asked by Anonymous

In physics we are working on a group project that talks about the future of renewable energy. Mine is geothermal. This is a new topic for me. I understand it so far but...

Can you tell me some new concepts for the future using geothermal energy? Or any links that talk about new advancemets? Please and thank you.
Most interesting gets 10 points

2007-12-07 09:06:01 · 2 answers · asked by izzabella_74 3

Hi,

please advise, thanks!

2007-12-07 08:45:01 · 4 answers · asked by Anonymous

A satellite is in a circular orbit just above the surface of the Moon. (The radius of the Moon is 1738 km.

What is the sattelite's acceleration in m/s-squared?

I am able to calculate the velocity, but then I'm stuck....

2007-12-07 08:41:33 · 2 answers · asked by I Need Help 4

We frequently get many opinions couched as science in the religion section and I was hoping someone knowledgeable could respond to this and answer clearly and appropriately. I appreciate anyone brave enough to take the time. :P

It is with respect to the magnetic field of the earth and how long it has been around.

http://answers.yahoo.com/question/index;_ylt=AkkSgsiHSWfInzC3M0J6bI_d7BR.;_ylv=3?qid=20071207132940AA3qSz2

2007-12-07 08:41:15 · 6 answers · asked by future dr.t (IM) 5