Physics - January 2007

-a magnet that can pick up more than just a paperclip
-also, a magnet that repels just as strong as it attracts.

2007-01-17 08:47:51 · 7 answers · asked by Kim 3

And the shields tied to ground. I assume the magnetic field from the cables cannot escape an earthed shield?

2007-01-17 08:14:17 · 2 answers · asked by sandymcbwala 1

of the building is 130 m x 60 m, what is the force of air molecules pusing down upon the building from above?

2007-01-17 08:10:47 · 3 answers · asked by NoturTypicalBI! 3

I"m working with sound, light, and waves. I need to do a powerpoint presentation on how light affects colors and how they work. HELP!

2007-01-17 07:14:46 · 3 answers · asked by weirdandwacky213 1

2007-01-17 07:04:46 · 1 answers · asked by John M 1

2007-01-17 07:02:57 · 2 answers · asked by John M 1

I know water freezes at 0 degrees celsius and that water boils at 100 degrees celsius. I do not understand how to use the formula given: Q=mLv .
Can someone explain this for me?
I was thinking the answer would be turning water into steam because it takes more heat to boil water then it does to melt ice, right?

2007-01-17 07:00:29 · 7 answers · asked by whispertree 3

2007-01-17 06:53:37 · 5 answers · asked by Anonymous

2007-01-17 06:39:17 · 5 answers · asked by alcxxk 1

Hi,
im doing a project on how does an ice cube melt.This is my task:

To describe what happens to an ice cube when it is left out of the freezer and explain why this happens.

i have to do a project explaining it on a poster. how does it melt? is it like the heat energy breaking it?On my sheet it says:

You may find drawing diagrams and labelling them with your ides it is helpful.
Try to include as much info about particles and energy in your explanation.
Think about the particles inside the ice cube: how are they arranged? What happens to them as the ice melts?Why does this happen?

Please, if you can help, it would be GREATLY appreaciated. if you can- do.please. i really need this.

thanks so much

(by the way im this usernames daughter)

:)

2007-01-17 06:36:16 · 5 answers · asked by gregandkerry 1

I know they ran into a lot of complications, but has any progress been made in last 20 years?

2007-01-17 06:14:47 · 7 answers · asked by steveSang 2

i am having problems with some coursework and i need to understand how ohm's law can back up my results that a longer wire is more resistant. please help im having a nightmare.

2007-01-17 06:08:45 · 7 answers · asked by olly_oconnell10 1

2007-01-17 05:56:22 · 3 answers · asked by Eli K 1

The space shuttle, on reentry, slows its velocity from 565 km/hr to 496 km/hr in 15 seconds, then in the next 17 seconds it slows to 346 km/hr at touch down. What is its acceleration during this time frame?
-0.0019 km/s2
i know the answer is -0.019 km/s^2, but i don't know how i can get to the answer. can someone please help me

2007-01-17 05:55:29 · 3 answers · asked by star wars freak 2

If a cheetah accelerates from rest at 7.8 m/s2 in order to reach 70 mph in a distance of 30 meters, how much time has elapsed?
2 sec
4 sec
6 sec
8 sec

2007-01-17 05:28:16 · 3 answers · asked by star wars freak 2

When i look at the world i see tiny dots 'buzzing'.Similar to the tv screen when there are no programs on.I can still see everyone and everything but it gives me a sense of two dimensional rather than three.Can anyone explain this please?

2007-01-17 05:15:22 · 6 answers · asked by Anonymous

2007-01-17 05:10:59 · 7 answers · asked by Anonymous

conceptual problem: if you can find gravitational force of an object like the moon using GM1M2/r^2 equation, how do u find velocity of the object (moon)? can u just plug in Fg for Fc and then rest of ur variables and go from there?

2007-01-17 05:07:09 · 2 answers · asked by Anonymous

2007-01-17 04:39:31 · 11 answers · asked by Sammy D 1

A piece of ice initially at a temperature below freezing is heated until finally it is entirely vaporized and reaches a temperature above the boiling point of liquid water. This change takes place at atmospheric pressure. The number of thermodynamic processes required is _____

I looked up thermodynamic processes and I cant quite figure out what they are?!?! What is each thermodynamic process that takes place in this problem?

2007-01-17 04:38:02 · 4 answers · asked by bippidibopiddi 2

2007-01-17 04:27:52 · 3 answers · asked by t m 1

gas laws

V=3,0 dm3
T=20C

what is the temperature if the volume is doubled

2.T=20C
V=4,0 dm3
V of piston above gas=500cm2

for how much does the piston move if gas is heated by 100 C.

2007-01-17 04:24:53 · 1 answers · asked by aly 1

Assumptions: No physical obstructions. No gravitational interference.

2007-01-17 04:19:18 · 8 answers · asked by Sammy D 1

describe how you would perform the experiment

2007-01-17 04:06:39 · 6 answers · asked by Anonymous

2007-01-17 04:01:17 · 7 answers · asked by K A 1

2007-01-17 03:56:33 · 10 answers · asked by Anonymous

2007-01-17 03:49:37 · 6 answers · asked by varahoorrangaprasadh 1

One particle has a mass of 3.00 x10^-3 kg and a charge of +8.40 µC. A second particle has a mass of 6.00 x10^-3 kg and the same charge. The two particles are initially held in place and then released. The particles fly apart, and when the separation between them is 0.100 m, the speed of the 3.00x^10-3 kg particle is 115 m/s. Find the initial separation between the particles.

2007-01-17 03:38:44 · 1 answers · asked by Hey Carl 1

2007-01-17 03:20:04 · 6 answers · asked by Anonymous

2007-01-17 03:08:52 · 3 answers · asked by alison g 2