Physics - May 2007

2007-05-20 06:09:11 · 8 answers · asked by Justin M 1

2007-05-20 05:23:29 · 3 answers · asked by loanshark50 2

what common techology doesnt efficiently convert energy? explain

2007-05-20 05:21:54 · 2 answers · asked by takingbackksunday 3

most simple and easy to remember yet precise.

2007-05-20 04:45:13 · 5 answers · asked by Aaron A 3

if speed is constant then a = 0, leading to no foce being involved. how can this be, if i am constantly applying force to the box to push it?

2007-05-20 04:00:13 · 9 answers · asked by Anonymous

I want to know what two materials to use and how the field is set up around it. I want the charges to eventually dissipate into the air around them and not stay in the material. Would I use two non-electrically conductive materials, like plastic and something fuzzy??

2007-05-20 02:51:40 · 2 answers · asked by bob t 1

why the presence of large bodies of water tend to moderate the climate of nearby land -making it warmer in cold weather and cooler in hot weather?

2007-05-20 01:47:32 · 9 answers · asked by Anonymous

Someone told me that a baseball actually accelerates when it hits the ground and skips to first rather than thrown in a straight line. I need a physicist to answer.

2007-05-20 01:08:50 · 8 answers · asked by em_tee06 1

hi ,i need a hand with my homework,james ,aged 8

2007-05-19 23:39:54 · 14 answers · asked by DEAN 2

2007-05-19 23:35:44 · 4 answers · asked by Anonymous

2007-05-19 23:24:55 · 2 answers · asked by Anonymous

how can the mechanical advantage of an inclined plane be calculated if only the distance, not height is included?

the question is a 200N car is raised a distance of 5 meters by an effort force of 500N.
how can the MA be calculated, if MA is calculated by length of incline/height of incline?

2007-05-19 22:31:43 · 2 answers · asked by Anonymous

what's the ideal mechanical advantage? effort distance? work input?

2007-05-19 22:11:14 · 3 answers · asked by Anonymous

2007-05-19 20:33:21 · 2 answers · asked by shyam s 1

i want the exact process and things required to make it. send as soon as possible.if anyone knows then please send it.

2007-05-19 20:30:52 · 2 answers · asked by akanksha s 1

A hot object and a cold object are placed in thermal contact and the combination is isolated. They transfer energy until they reach a common temperature. The change ΔSh in the entropy of the hot object, the change ΔSc in the entropy of the cold object, and the change ΔStotal in the entropy of the combination are:

a) ΔSh > 0, ΔSc > 0, ΔStotal > 0
b) ΔSh < 0, ΔSc > 0, ΔStotal > 0
c) ΔSh < 0, ΔSc > 0, ΔStotal < 0
d) ΔSh > 0, ΔSc < 0, ΔStotal > 0
e) ΔSh > 0, ΔSc < 0, ΔStotal < 0

2007-05-19 20:00:34 · 3 answers · asked by Oscar P 1

2007-05-19 19:58:15 · 5 answers · asked by Angela J 1

When an ideal gas undergoes a slow isothermal expansion:

a) the work done by the gas is the same as the energy absorbed as heat
b) the work done by the environment is the same as the energy absorbed as heat
c) the increase in internal energy is the same as the heat absorbed
d) the increase in internal energy is the same as the work done by the gas
e) the increase in internal energy is the same as the work done by the environment

2007-05-19 19:42:45 · 1 answers · asked by woody56 1

About a point which is not on its path

2007-05-19 19:33:28 · 2 answers · asked by avinash a 1

He said that if you can go faster than the speed of light and go forward----you can go to the future.
If you can go backwards_which is a great talented_----you can go to the past. So if his theory is true, scientists shoul make a time machine that vibrates so fast that it can beat light in a 9000K race! And it has to automaticly just push back and/or forward. But that's another story!

2007-05-19 19:27:19 · 14 answers · asked by لا إله إلاَّ الله 3

Has any pop-physicist ever therorized how the Heisenberg Compensators (transporters in Star Trek) could work?

I have been thinking that if the whole problem is not knowing where and when an ataom will be at any moment in time, couldnt some sort of compensator solve the problem via super-fast binary computing, you know like --IF atom here, THEN rematerialize there, IF atom there, THEN rematerialize here.... and so on... Doesn't that work in theory???

Also are there physicist who seriously question Heisenberg's uncertainty principle or is this canon (as much as say gravity is)

2007-05-19 19:24:59 · 3 answers · asked by Anonymous

2007-05-19 19:08:23 · 7 answers · asked by trisha erika v 1

if you do more work to move more charge a sertain distance against an electric field, and increse the electric potential energy as a result, why do you not also increase the electric potential?

2007-05-19 19:06:51 · 3 answers · asked by Lana F 1

2007-05-19 18:47:14 · 7 answers · asked by Agnibh M 1

2007-05-19 18:42:47 · 5 answers · asked by Lana F 1

A person whose eyes are 1.85 m above the floor stands in front of a plane mirror. The top of her head is 0.11 m above her eyes.

a) What is the height of the shortest mirror in which she can see her entire image?
b) How far above the floor should the bottom edge of the mirror be placed?

2007-05-19 18:34:09 · 2 answers · asked by Alan l 1

i can use paddle pop sticks, tooth picks, PVA glue, rubberbands, string,straw, cardboard and thumb tacks.... if u can help me plz it will b the best :P:P

2007-05-19 17:18:39 · 3 answers · asked by Anonymous

Hi. I have no mathematical background (at least not with vector calculus) and little scientific info regarding this theory- -but im interested

Can someone please just freak me out a bit with some of the basic ideas of quantum mechanics?

I know the obvious stuff---like from a Brief Historyo f Time, etc
but

What are the ideas with ex. sum over histories, a truck being a wave, virtual particles/reflecting millions of light yrs away --wave functions etc

I have an basic understanding of all of these --but not enough to scare myself --Can someone just expalin in the enough so I can scare myself a bit because it's so bizzare???

Thnks

2007-05-19 17:15:21 · 6 answers · asked by Anonymous

2007-05-19 16:33:38 · 11 answers · asked by Cassie 2

2007-05-19 16:12:45 · 1 answers · asked by jevoune_snow 1