Physics - February 2007

I've seen on tv, and in real life..they fire continously..like more than a bullet per second for few seconds untilk the clip is out...they obviously dont have some sort of battery...then how does the mechanism work?

2007-02-21 02:58:19 · 4 answers · asked by ? 1

What are some uses of a magnet in every day life that you normally don't know that you are using one. Ex. sA lot of people don't know that a TV uses magnets but they use it every day.

2007-02-21 02:56:10 · 5 answers · asked by Scott 1

After watching the pilot of Jericho my husband and I have had a running disagreement about how far away a mushroom cloud from a nuclear explosion can be seen. I'm guessing it depends on the size on the bomb, so we'll assume an extremely large one. We live approx. 90 miles from Cleveland Ohio... could we see it if one hit there?

2007-02-21 02:41:49 · 9 answers · asked by CherylAnn 1

I wanted to test time dialation (yes, I know it has been proven already) I already have the equation. I thought I could have someone keep track of their time while they take a fast car ride, while I stay at home. We would both synchronize our watches.
Could I measure ANY results in this manner? Basically, I wanted to test time dialation at low velocities (like 70 MPH). Is this possible, or do I need to get someone to ride in an airplane to notice any "change" in time?

2007-02-21 02:36:41 · 2 answers · asked by Michael n 2

It might help to do this with quantum mechanics so the monkeys can work faster. I think I read that it was possible to do this in a cup of coffee (it might help if you read: http://216.239.59.104/search?q=cache:7p9NlA8RKhAJ:www.cmmp.ucl.ac.uk/~ajf/Event_Horizon_24Nov03.ppt+coffee+cup+quantum+mechanics&hl=en&ct=clnk&cd=8&gl=uk&client=firefox-a)

thanks

2007-02-21 02:20:56 · 5 answers · asked by quantum mechanic 1

2007-02-21 02:12:52 · 1 answers · asked by Yahoo! 5

I've searched the web and have so far found nothing in the way of what you might call a step by step "simple explanation" (if there indeed is one). I was wondering if anyone could explain this equation to me in layman's terms without writing a thesis. If possible could you add any practical applications to which this equation applies to? Thanks.

2007-02-21 01:53:18 · 11 answers · asked by Anonymous

Suggest how to stop the young scientists and doctors and others from migration to other countries from INDIA in order to develop our country?

2007-02-21 01:37:49 · 8 answers · asked by karnam r 1

I have to draw a schematic diagram and include 3 batteries, 3 light bulbs, 1 resister and 1 switch. I Have to put the resistor between the 2nd and 3rd bulbs. What I was wondering is which way does the current flow fromthe batery. does it flow out of the positive which means the switch would be before the negative. or vise versa? Confusing !

2007-02-21 01:36:50 · 4 answers · asked by Anonymous

A length of aluminum wire is connected to a precision 10.11 V power supply, and a current of 0.4218 A is precisely measured at 20.0°C. The wire is placed in a new environment of unknown temperature where the measured current is 0.4627 A. What is the unknown temperature?

Please show how you did it. Thanks!

2007-02-21 01:31:13 · 3 answers · asked by Minamoto 1

an austronaut wiht mass 64 Kg travels to mars. what is his weight.

a. on earth? (9.8m/s2)
b. on mars? (3.8 m/s2)

i need help on this phycics problem

2007-02-21 01:30:45 · 5 answers · asked by Anonymous

2007-02-21 01:29:19 · 4 answers · asked by marycel d 1

Please show how you did the work. Thank you!

2007-02-21 01:22:35 · 2 answers · asked by Minamoto 1

2007-02-21 01:14:15 · 16 answers · asked by gurudas65 1

The use measuring temperature i.e. using the thermocouple as a digital themometer with the emf being amplified and calibrated to record a specific temperature.

2007-02-21 01:08:26 · 1 answers · asked by Anonymous

Please include sources.

Thanks.

2007-02-21 01:00:29 · 1 answers · asked by kerlexis 1

I believe the answer is mediums, but I'm not certain. It would also be very helpful if you gave some examples.

2007-02-21 00:58:50 · 3 answers · asked by kerlexis 1

2007-02-21 00:40:54 · 4 answers · asked by ceexbee 2

and how does it work

2007-02-21 00:40:26 · 2 answers · asked by xXnevetsx360Xx 2

Does it go up or stay the same (or does it depend on the height you lift it to)?

2007-02-21 00:31:37 · 6 answers · asked by Nikita R 2

help me plss...confuse

1 1 kg of iron and 1 kg of brass are suspended from different balance scales,each metal fully submerged in water.How do the scale readings compare? Express the answer as a function of the densities of the two materials.
2. a completely submerged chunk of metal sinks in water with an acceleration equal to 1/5 of g (where g = 9.8 m/s^2).Find the specific gravity of this metal.Ignore all the drag effects in th fluid.
3.A beach ball has a volume of 0.03 m^3.How much force would you have to exert to hold this beach completely under water?
4 A sinker was used to submerge a piece of cork beneath the water to determine the cork's specific gravity.Assuming the specific gravity is not known,why is it unnecessary to determine the specific gravity of the sinker?

BIG THANKS ! ! !please help me

2007-02-21 00:28:43 · 2 answers · asked by ice_cream_chico 1

possible?

2007-02-21 00:22:57 · 15 answers · asked by BRAD Thomas 1

2007-02-21 00:21:48 · 7 answers · asked by Neelkush 1

First can someone help me apply Newton's third law of motion to explain how two billiard balls moving toward each other @ the same speed collide ans move away from each other @ the same speed.

And I need help calculating the acceleration of an 82 kg couch that is puched across the floor with an unbalanced force of 21 N

2007-02-21 00:18:10 · 1 answers · asked by Anonymous

please help me with this problem

1. the simple pendulum has a mass of 200 grams and length of 2.5 m.What is the period of pendulum?To make the period three times,how long must the pendulum be?

2.The young's modulus of elasticity of aluminum wire is 7x10^10 pa.What force is needed to stretch the wire by 0.002 m if the wire is 0.001 in diameter and 0.60 m long ?Find stress and strain.

3. Wires A and B are made of same material but A has diameter twice that of wire B. If the stress on A is equal to the stree on B,what is the relation between the force on each wire?

please help....dont get this

i really appreciate if you can help me to solve this problem
BIG THANKS ! !

2007-02-21 00:04:31 · 2 answers · asked by ice_cream_chico 1

- How do you convert pounds to Newtons?
I was thinking I should go to kg first, but how can you go between the two if N is kg times m/s^2? N is a mass measurement, I know, but my teacher just gave us a list of weights in pounds and asked us for N (no seconds, no nothing).
- If you stand on a scale with one foot, won't the scale reading go down at first?
There are other choices like it going up or staying the same, but I thought that it would just go down. (I don't have a scale, or I would've checked...lol.)

2007-02-21 00:01:52 · 3 answers · asked by Nikita R 2

2007-02-20 23:07:19 · 2 answers · asked by inthemaking 2

Hmm, ^^, so the cart accelerated as it went down the ramp, so what would be its motion on the floor?

2007-02-20 23:00:51 · 2 answers · asked by inthemaking 2

I am practicing telekinesis, know some tips to meditate

2007-02-20 22:35:59 · 8 answers · asked by jolteon poker s 1

Why?

2007-02-20 22:28:07 · 8 answers · asked by inthemaking 2