Physics - August 2006

This is question four!!!!!

4. Does your flashlight dim when you shake it?

Come on, you were a kid once. I dare say that everyone was facinated by a flashlight at some point in their lives and played with one for hours on end. That is, of course, until the batteries ran out, at which time the flashlight wasn't very facinating at all.

Well, what i'm wondering is, while the batteries were dying and the light was much dimmer than it would be if the batteries were full power, whenever you shook the flashlight, did it dim even more, only to return to it's original state of dimness whenever you stopped?

Believe it or not, the findings of this question actually have a practical value.

2006-08-10 10:50:46 · 3 answers · asked by Anonymous

This is the third question in I'm not sure how many of a probe into the behavior of electricity. I intend to use the findings later to test another theory.

3. Is the flow of electric current affected by temprature?

These questions are pretty straightforward. We've all heard of resistance, measured in Ohms. Well, what I'm wondering is does electricity travel as well in cold enviornments as hot enviornments? That is to say, do they need special cables in Alaska to make electricity flow from the power plant into all of those little igloos, or do they need special cables in the deserts of Arizona and Nevada to keep Las Vegas lit up all night long? I suppose that it would be just as relevant if the effects of temprature on the wires would cause changes in the behavior of the current, too.

Now, keep in mind, I'm not asking if the current reverses or comes flying out of the side of the wires, mind you. I just wonder if it speeds up or slows down. Even by the most minute degree.

2006-08-10 10:42:31 · 9 answers · asked by Anonymous

2006-08-10 10:19:24 · 15 answers · asked by Anonymous

2006-08-10 09:59:59 · 9 answers · asked by aneesh 1

Causality of motion

2006-08-10 09:46:56 · 2 answers · asked by goring 6

2006-08-10 09:39:00 · 13 answers · asked by goring 6

Was it not Understood that quantum mechanics had no mechanism for explainning Gravitation?

2006-08-10 09:34:28 · 3 answers · asked by goring 6

How would it compare to the smallest photon?CAn entities exist without occuppying a volume?

2006-08-10 09:21:33 · 2 answers · asked by goring 6

Were they not assuming a wrong Idea of what the aether really is?

2006-08-10 09:13:43 · 2 answers · asked by goring 6

2006-08-10 09:02:55 · 15 answers · asked by aneesh 1

The nominal stopping distance of the sports car is 130. ft from 60.0 mi/h. Determine the acceleration in m/s^2.

a. 6.0 m/s^2
b. - 9.08 m/s^2
c. - 6.02 m/s^2
d. 50 m/s^2

2006-08-10 08:41:14 · 6 answers · asked by todd b 1

How much work is needed to push a 132 kg (or 100.-kg) packing crate a distance of 5.00 m up a frictionless inclined plane that makes an angle of 20 degrees (30.0 degrees) with the horizontal?

a. 210 J
b. 2450 J
c. 1170 J
d. 2212 J

2006-08-10 08:37:57 · 6 answers · asked by todd b 1

stone at the earth’s center compare with their values at the earth’s surface?

2006-08-10 08:18:21 · 8 answers · asked by Twhat 1

specifically what type and how much radiation is given off? also what affect does repeated bombardment have on the aluminum?

2006-08-10 08:04:43 · 3 answers · asked by nostalgic computing 2

if that component can be broken down to something smaller and that component broken down to something smaller and so on, and so on, where will it end. If it stops at notingness, than how can we exist.

2006-08-10 08:04:39 · 9 answers · asked by robert t 1

Suppose you have a permanent magnet that is attached to a mass sitting on a surface. The attraction is strong enough that you can pull the mass via a string attached to the magnet. This is not an "idealized system" - i.e. there is energy lost through friction and air resistance. Yet, you can pull this mass as long and as far as you want without any change in the properties of the magnet. There is energy output from the magnet, since it is supplying the force to pull the mass. But where does it come from? Does this somehow violate the Law of Conservation of Energy?

How is it that two charged particles supply the energy to repel or attract one another without changing their characteristics?

Yes, I know it's the magnetic/electrical fields. And that's generated by the charge. But HOW?

2006-08-10 07:57:05 · 10 answers · asked by J C 3

the ends of a steel rod are fixed. What is the thermal stress in the rod when the tempeture decreases by 80 degrees K. Youngs modulus for steel is Y=2x10^11 N/msquared.

2006-08-10 07:48:07 · 3 answers · asked by jonessunrunner1 2

2006-08-10 07:43:13 · 3 answers · asked by smitmeister_99 3

Stories Abound Real or Otherwise That ' Last Night It Must Have Rained Of Peas, Apples Or Grasshoppers Or Frogs ' Or Whatever.

2006-08-10 07:41:48 · 7 answers · asked by savvy s 2

A sample of gas at 20 degrees Celsius has a volume of 0.6L at a pressure of 0.8atm. find the number of moles and the number of molecules?

2006-08-10 07:24:57 · 2 answers · asked by jonessunrunner1 2

I'm working on my GRE's and I 'm really stuck here. Looks like it should be easy but I can't figure it out.

Two cars start 0 distance apart and travel in opposite directions. After two hours, they end up 208 miles apart. What is the average velocity for each car if one of them has traveled with an average velocity 8mi/h faster than the other?

2006-08-10 07:22:00 · 14 answers · asked by ? 1

2006-08-10 07:10:52 · 6 answers · asked by joannesv 1

2006-08-10 07:02:48 · 12 answers · asked by Anonymous

what is the volume of one mole of an ideal gas at 0 degrees Celsius and one atmosphere of pressure?

2006-08-10 07:02:41 · 3 answers · asked by jonessunrunner1 2

Who said this phrase? Was it Sir Isaac Newton?

And wasn't this also some law in physics as well?

2006-08-10 06:54:30 · 5 answers · asked by Anonymous

2006-08-10 06:11:00 · 19 answers · asked by bocsaszi 1

2006-08-10 05:54:48 · 2 answers · asked by Rory 1

2006-08-10 05:48:34 · 14 answers · asked by amnesty 2

I am at the South pole, how come it does not feel like I am standing on my head?

2006-08-10 05:37:12 · 21 answers · asked by ocm 2

i.e. Greater gravity, Giant Life forms?

2006-08-10 04:41:26 · 27 answers · asked by franco z 1