Physics - January 2007

An astronaut fprgot one bucket of water on moon & returned to earth.
After ten years he again visited the moon.What will he find there in place of water in the bucket?

2007-01-29 19:08:00 · 12 answers · asked by rajesh bhowmick 2

i'm wondering how the scientists can show 8 dimensions or more in our universe...

2007-01-29 18:44:12 · 5 answers · asked by TeaTee 2

2007-01-29 18:25:19 · 23 answers · asked by loquitataco 1

2007-01-29 17:39:44 · 1 answers · asked by Anonymous

why or why not?

2007-01-29 17:32:30 · 7 answers · asked by Anonymous

A lead sphere has a diameter that is 0.05% larger than the inner diameter of a steel ring when each has a temperature of 70.0 oC. Thus, the ring will not slip over the sphere. At what common temperature will the ring just slip over the sphere?


Cheers, any help is much appreciated.

2007-01-29 17:16:24 · 3 answers · asked by Vanessa M 1

I like this question. Nobody knows the answer but me.

2007-01-29 17:13:02 · 9 answers · asked by wwwwwwwfe 1

Two banked curves have the same radius. Curve A is banked at an angle of 13 degrees, and curve B is banked at an angle of 19 degrees. A car can travel around curve A without relying on friction at a speed of 18m/s. At what speed can this car travel around curve B without relying on friction.

2007-01-29 17:04:50 · 3 answers · asked by katmariea 1

The mass of the sled and its two rides is 350 kg. Find the magnitude of the centripetal force that acts on the sled during the turn with a radius of a) 33m and b) 24m?

2007-01-29 17:01:57 · 2 answers · asked by katmariea 1

in the direction of 32.5° north of west from city B to city C
Relative to city A, in what direction is city C?

lets see if you guys can do this?

2007-01-29 16:45:45 · 5 answers · asked by cosmo 1

2007-01-29 16:39:53 · 1 answers · asked by Akevia P 1

2007-01-29 16:39:31 · 1 answers · asked by Akevia P 1

If the boat (including its crew) has a mass of 340 kg, what are the magnitude and direction of its acceleration?

2007-01-29 16:39:07 · 2 answers · asked by cosmo 1

How far would the person walk due north and due east to arrive at the same location?

-Lets see how fast can you can do this one guys

2007-01-29 16:37:03 · 2 answers · asked by cosmo 1

Ok, I have this really simple lab but its just not working out and I dont know why. It seems complicated but its not. If you could read it out and help me it would be GREATLY appreciated. I dont get where Im going wrong. (See details if I run out of space.) The goal is to find the acceleration due to gravity. (9.8m/s^2)

We dropped a plum bob and as it dropped it marked in a piece of wax paper ever 1/30 seconds. We circled EVERY OTHER DOT. We then measured the distance from each circled dot to the next starting at dot one. (0 to dot two, dot two to dot four, dot four to dot six, etc. Aka, every other dot.) The time between each dot is 1/60 of a second. (its really 1/30, but we are measuring every other dot so its 1/60) My lab sheet tells me to make a displacement vs. time graph but Im not exactly sure why. Im trying to find acceleration which would be the slope of a Velocity/Time graph. So anyway, here are the displacements I got from measuring the dots mentioned before:

2007-01-29 16:35:05 · 3 answers · asked by James 1

Hello I need help for spring problem
Here is the question
Two large crates, with masses 640kg and 490kg, are connected by a stiff, massless spring (k=8.1kN/m) and propelled along an essentially frictionless, level factory floor by a force applied horizontally to the more massive crate.
If the spring compresses 5.1cm from its equilibrium length, what is the applied force?

2007-01-29 16:28:35 · 1 answers · asked by T.K 1

2007-01-29 16:26:33 · 11 answers · asked by Tran T 1

2007-01-29 16:09:50 · 6 answers · asked by nodakbassmaster 1

Illustrate the principle of mass conservation

2007-01-29 15:58:36 · 2 answers · asked by Anonymous

How are Nothern Lights Related to Magnetism?

2007-01-29 15:44:39 · 4 answers · asked by knd1994 2

Evolution is not solidly demonstrated. "Evolution is just a theory," Darwin's critics point out, as if "theory" meant lack of knowledge, some kind of guess. Scientists, however, use the word theory in a very different sense than the general public does. Theories are the solid ground of science--that about which we are most certain. Few of us doubt the theory of gravity because it is "just a theory"

i need help writing that in my own words, can someone please help me out! Thanks

2007-01-29 15:40:35 · 2 answers · asked by dancinqt0411 1

The position of a particle as a function of time is given by:
r (vector)=(5i +4j)t^2 m, where t is in seconds

What is the particle's distance from the origin at t = 0, 2, and 5 s?

2007-01-29 15:30:56 · 2 answers · asked by Anonymous

it weighs 265 N. When it is immersed inoil,it weighs 269 N. Find:
A. the density of the object
B.the density of the oil

I need to know how you did this because it is a example for my test tomorrow! another problem just like this will be used but of course with different numbers! Thanks!

2007-01-29 14:44:17 · 2 answers · asked by NoturTypicalBI! 3

A. What is the magnitude of the boyant force acting upon it?
B. What is the apparent weight of the steel once submerged in water ( D=9000 kg/m^3)
I need to know how you did this because it is a example for my test tomorrow! another problem just like this will be used but of course with different numbers! Thanks!

2007-01-29 14:37:39 · 1 answers · asked by NoturTypicalBI! 3

i'm doing an article for my school news paper about the show 'Armed & Famous' and how it got cancelled. what should I call it?

2007-01-29 14:34:57 · 3 answers · asked by deegreat:) 2

2007-01-29 14:25:04 · 15 answers · asked by kayandal 1

2007-01-29 14:23:22 · 3 answers · asked by curious 2

An electron starts from rest 74.5 cm from a fixed point charge with Q = -0.175 µC. How fast will the electron be moving when it is very far away?

2007-01-29 14:19:26 · 4 answers · asked by Anonymous

What is the capacitance of two square parallel plates 6.5 cm on a side that are separated by 1.6 mm of rubber? K (dielectric constant) of rubber is 2.8.

2007-01-29 14:18:14 · 0 answers · asked by Anonymous

The charge on a capacitor increases by 23 µC when the voltage across it increases from 80 V to 121 V. What is the capacitance of the capacitor?

2007-01-29 14:16:42 · 3 answers · asked by Anonymous