Physics - March 2007

2007-03-21 02:02:56 · 3 answers · asked by Anonymous

One hobby of mine is programming. I am currently trying to create a virtual universe. Of course, It won't be quite as big or as fast as the real thing. I want to create about 1000 of the most basic particles known to man in a virtual universe. The way it is set up is each particle has an x,y,z coordinate x,y,z velocity, and mass. What I want to know is how they interact. What different forces bind them? And how? Perhaps I can simulate the big bang with the simplest of programs. Most of what I know of physics I taught myself through programming.

2007-03-21 01:54:56 · 5 answers · asked by Anonymous

I have two same caliber projectiles, both weighing the same. If one is fired out of a gun at 2000 fps and the other one is dropped free at the exact same time and height as the gun, would they both hit the ground at the same time? A different variation of the question would state: If two projectiles, both same in diameter and configuration but of different weights, were fired at the same time and at the same velocity, would they both hit the ground at the same time?

2007-03-21 01:54:21 · 8 answers · asked by Anonymous

must not be too difficult to make. students are making it.

2007-03-21 01:45:13 · 8 answers · asked by Anonymous

2007-03-21 01:39:49 · 4 answers · asked by Anonymous

or do they both same thing?

2007-03-21 01:23:42 · 1 answers · asked by sid 1

2007-03-21 01:15:51 · 4 answers · asked by Anonymous

What i mean is that suppose i want to lift 50kg of a stone. The force of gravity on it is 500N(approx) in downward direction. Now If i lift the object with a force of 500N in upward direction that means that two forces are acting on the stone of same magnitude but in opposite direction. In that case the stone should not move up , but it does Why is it so? are we applying more force to lift the stone?

2007-03-21 00:52:05 · 8 answers · asked by sarita s 1

When in space, astronauts usually receive a radiation does of about 1000 (micro)Sv per day. The maximum allowable annual dose for people working with radiation is 50 mSv.

The normal annual background dose per year on Earth is 2mSv. how many days does it take for astronauts to exceed this dose?

Okay, so I changed 1000 (micro)Sv to .001Sv. So each day, astronauts receive .001 Sv. Every YEAR, people on EARTH get 2000 Sv. It's asking how long will it take an astronaut to reach this limit. How would you work that out?

2007-03-21 00:38:44 · 3 answers · asked by Anonymous

sciiiiiiiiiii

2007-03-21 00:04:03 · 11 answers · asked by life_19withme 1

If time travel possible, There would be more than one times of happening of an event. If you can go back to past, Is it happening? Is the past still happening? Is the future still happening? How can one event happen more than once?

2007-03-20 23:40:06 · 10 answers · asked by future 1

A question that mixes physics with food and drink....

2007-03-20 22:58:46 · 4 answers · asked by sassychickensuckerboy 4

1.state newton's 3 laws of force.
2.define weight.
3.what is power? give its SI unit.
4.state the law of conservation of mass and the law of constant proportions.
5.state the universal law of gravitation.
first one with all right answers will win a price of 10 points!!!
why not it be u!!!???

2007-03-20 22:53:03 · 11 answers · asked by Anonymous

2007-03-20 22:34:27 · 18 answers · asked by Anonymous

Whereas electron has momentum(both velocity& mass).

2007-03-20 22:28:05 · 6 answers · asked by Raju Roy 1

2007-03-20 21:47:16 · 3 answers · asked by Rynbow 2

2007-03-20 21:43:09 · 11 answers · asked by rahulfablow 1

====
1.
" Physics it first of all Vacuum. "-
say many of physicists.
2.
“The Vacuum has the lowest energy condition.”-
they say.
Such definition of Vacuum is not scientifically.
It sounds as the doctor - genecology will establish the diagnosis:
" She is approximately pregnant woman ".
Please, give exact definition of a condition of Vacuum.
=============
http://www.socratus.com
=================

2007-03-20 21:29:59 · 1 answers · asked by socratus 2

A long horizontal wire carries 22.0A of current due north. What is the net magnetic field 20.0cm due west of the wire if the Earth's field there points north but downward, 37 degrees below the horizontal, and has magnitude 5.0 x 10^-5 T.

2007-03-20 21:23:16 · 1 answers · asked by physics 1

ie will the ball fall "up into the sky at the other end" or "YoYo" back and forth, eventually resting in the centre of the Moon?

2007-03-20 21:03:43 · 19 answers · asked by Anonymous

Here is the question:
A 77kg man holding a .575 kg ball stands on a frozen pond next to a wall. He throws the ball at the wall with a speed of 10.9 m/s (relative to the ground) and then catches the all after it rebounds from the wall. Ignore the projectile motion of the ball, and assume that it loses no energy in its collision with the wall. How fast is he moving after he catches the ball? Answer in m/s.

I used conservation of momentum as follows.

I said that Vman = (Mball*Vball) / (Mman + Mball). I got .080793 as my answer but this is wrong. What am I not seeing correctly?

Part B of this question asks how many times does the man have to go through this process before his speed reaches at least 2.7 m/s relative to the ground?

Here would you just take the velocity of part 1 of the question and divide 2.7 by that number?

2007-03-20 20:20:07 · 3 answers · asked by Anonymous

a 5.0 MeV (kinetic engery) proton enters a 0.20-T field, in a plane perpendicular to the field. What is the radius of its path?

I'm still trying to figure this out. =/
Please provide step-by-step directions. Thanks!

2007-03-20 19:47:07 · 1 answers · asked by Sparkles 3

A ball is launched as a projectile with initial speed v at an angle (theta) above the horizontal. Using conservation of energy, find the maximum height hmax of the ball's flight.
Express your answer in terms of v,g , and theta.

2007-03-20 19:09:08 · 3 answers · asked by ♡♥EM♡♥ 4

2007-03-20 19:07:51 · 4 answers · asked by Anonymous

Two equal masses m are attached with a massless string of length L.The string is tight and the masses are moving in uniform circular motion with speed v about the system's center of mass. The string is on fire and breaks . There is no gravity or other external forces on the system. What is the angular momentum of the system after the collision.

2007-03-20 18:46:05 · 3 answers · asked by Madiyar T 1

According to Newtons law of cooling

2007-03-20 18:42:28 · 3 answers · asked by daiz 1

2007-03-20 18:30:00 · 9 answers · asked by Anonymous

2007-03-20 18:28:20 · 4 answers · asked by @my 2

Sled slides down a hill w/ snow with no initial velocity. The hill is 20 meters high. The total distance traveled on the x axis is 22 meters. (So the length of the hill's slope is 29.7 meters, if thats relevant.) The coefficient of kinetic friction between the sled and snow is .353 . The student and sled together weight 71 kg. What is the final velocity at the bottom of the hill?

Part 2
After the hill there is a flat area 4 meters across. Does the sled travel this entire distance? If so how fast are they going at the end. If not , how far do the only make it?

Part 3(if it makes it past flat area)
Then after the flat area, the sled comes up to another hill. The problem does not give me an angle of the hill, just that it is 7 meters across the x axis, and i'm supposed to find how far the sled goes up that hill?

2007-03-20 18:27:36 · 1 answers · asked by Anonymous

How heavy (in Lbs) does a flywheel have to be to produce a moment of inertia of 110.9 pound feet squared (slugs)?

2007-03-20 18:24:44 · 2 answers · asked by fuzzy 1