Physics - July 2007

If I am in a spaceship traveling at a constant 22,000 miles per hour through space in a straight line then how long would a normal Earth 24 hour period be for me on the space ship? I came up with 23 hours 59 minutes and 57.167 seconds. Is their any way to prove this? Thanks for your help.

2007-07-11 11:14:58 · 5 answers · asked by justask23 5

2007-07-11 11:09:40 · 7 answers · asked by jerryalanjr 1

The first person to answer correctly will be awarded best answer.

Calculate the voltage across the 7.300 Ohm resistor. Please show your work.

http://www.geocities.com/trunks11111/theresistors.jpg

2007-07-11 09:44:37 · 4 answers · asked by Nate-dawg 2

A.) its axis
B.) its center
C.) its center of gravity

aslo 2.

any force that keeps an object in a circular path is
A.) centrifugal force
B.) rotational inertia
C.) centripetal force
D.) none of the above

also 3.
consider an ant walking along the edge of a spinning merry-go-round. what force(s) keeps the ant traveling in a circle?
A.) centrifugal force
B.) centripetal force
C.) both a and b
D.) neither a nor b

also 4.
which force(s) is an inward force?
A.) centrifugal force
B.) centripetal force
C.) both a and b
D.) neither a nor b

also 5.
the outward force of rotational motion is
A.) centrifugal force
B.) centripetal force
C.) torque
D.) none of the above

aslo 6.
consider an annt walking along the edge of a spinning merry-go-round. what force(s) pushes the ant closer to the edge?
A.) centrifugal force
B.) centripetal force
C.) both a and b
D.) neither a nor b

someone please help me

2007-07-11 09:16:30 · 4 answers · asked by sagen j 1

Two .20g metal spheres are hung from a common point by nonconducting threads 30cm long. both are given identical charges, and the eectrostatic repulsion forces them apart until the angle between the threads is 20 degrees. how much charge was placed on each sphere?

ok how would i start this problem?? can u even do this without knowing the charges? id really appreaciate some help on this stuff, i dont get it. thanks

2007-07-11 09:13:45 · 3 answers · asked by Kel 1

If my eyes see everthing upsidedown
and my brain turns it all rightsideup
what keeps me from falling off the earth?

2007-07-11 09:06:45 · 9 answers · asked by workinman 3

Many people think it was the XFJ-1 in 1952, but it was not.

2007-07-11 09:03:14 · 9 answers · asked by ranimal100 2

2007-07-11 09:02:47 · 6 answers · asked by Alexander 6

Incase you dont understand, I think I heard before that out of all things a bubble is a perfect shape and more perfect then any other shape on earth. I guess symmetry wise. Has anyone herd this or know the asnwer?

2007-07-11 08:42:40 · 5 answers · asked by Anonymous

Why do surfboards float? I know is has to do with density

2007-07-11 08:01:39 · 8 answers · asked by ~Mir-Zombie~ 2

There are two plastic jugs filled with water. How could you put all of this water into a barrel, without using the jugs or any dividers, and still tell which water came from which jug?

2007-07-11 07:41:05 · 11 answers · asked by Anonymous

2007-07-11 07:38:30 · 19 answers · asked by emptyheed 1

installed under the floor.

http://www.spacequest.net/misc/fanfiction/fanstories/sq3fanfiction.shtml

The plate has a shape of uniform disk of radius
R=10m and induces gravity 1g (9.8m/s²) in the
center of the diner.

What is the mass of the plate?

2007-07-11 07:23:20 · 5 answers · asked by Alexander 6

Is it backwards, too? I forgot to check.

2007-07-11 07:10:41 · 8 answers · asked by Anonymous

I realize the implications of such a question so take it easy on me. I am also aware that your mass would increase adinfinitem and so on ignoreing these for now Is it possible

2007-07-11 07:03:06 · 15 answers · asked by Anonymous

2007-07-11 06:51:14 · 7 answers · asked by harron s 1

Im not talking about negative G

2007-07-11 06:37:48 · 8 answers · asked by Anonymous

I've realized my left eye is farsighted and my right eye is nearsighted. I don't know whats the name for it, does anybody know its correct name and please give me some kind of info for it, it would really help.

2007-07-11 05:19:19 · 5 answers · asked by Anonymous

There are 3 answers that I know of. 2 3 letter words and 1 5 letter word.

2007-07-11 04:48:49 · 14 answers · asked by hkbillyraybittybuddy 1

Hi, i'm looking for a clear explanation as to what transformers are. What i know is that they are something to do with coils of wire round a core of a metal, there's some kind of inductance there, and it all has to do with an electro motive force, and what in god's name has the ratio of primary to secondary turns have to do with anything ?
Anyone who can explain these things will get 5 whole points, or whatever the amount of points you get for getting the answer right is.
Thanks.

2007-07-11 04:22:06 · 7 answers · asked by David M 1

LOL... really tho, is spontaneous combustion possible?!

2007-07-11 04:02:36 · 11 answers · asked by theskyisthelimit02 3

think outside the box.

2007-07-11 03:55:25 · 12 answers · asked by Anonymous

how about a humain hair?

2007-07-11 03:54:05 · 7 answers · asked by Anonymous

basically could you direct microwaves into the air and accelerate them like you would inside of a microwave oven?

2007-07-11 03:50:17 · 7 answers · asked by Bryan Smith 1

thanks

2007-07-11 03:32:21 · 4 answers · asked by Anonymous

The Beretta Model 92S (the standard-issue U.S. army pistol) has a barel 127mm long. The bullets leave this barrel with a muzzle velocity of 335m/s.

a) What is the acceleration of the bullet while it is in the barrel, assuming it to be constant? Express your answer in m/s^2 and in g's.
b) For how long is the bullet in the barrel?

Answer:
a) 4.42 x 10^5m/s^2 = 4.51 x 10^4g
b) 0.758 ms

I need to know how to get the answer. Please help.

2007-07-11 03:22:13 · 4 answers · asked by Cheat Sum 4

......................say a photon is leaving a star which is moving away from us, by the doppler effect the photon will be red shifted, hence it's wavelength has incresed. But the energy of a photon is given by E=hc/wavelength, where h is planks constant and c the speed of light. so if you were to measure the energy the photon had when leaving the star
(you being stationary with respect to the star) compaired to it reaching earth it would have lost energy just because the star was moving away? what happend to this energy or is it just a relitive thing? any comments welcome. Thanks.

2007-07-11 03:09:23 · 7 answers · asked by s 2

There is no edge to space, if not correct me.
If so why must there be a beginning (edge) of time as it is essentially no different from spatial dimensions. If not correct me.
So why does there have to be a duration of the universe (magnitude in the fourth dimension)? If there is not a size of the universe (magnitude in the other three dimensions).
If you feel that the physical laws of the universe do not permit this why is it then that physical laws can not change or that there are not exceptions at certain quantities?
People often argue about this in the debate between big bang and creation but why can people not comprehend an eternity as they comprehend an unending strip of space known as a circle. Quite confused, please help.

2007-07-11 02:19:19 · 11 answers · asked by Anonymous

does the uncertainity principle mean that there will always be an uncertainity in 'the values measured of some physical quantities' or does it mean that there will be an uncertainity in 'the values existent of some physical quantities'? both the statements are different from each other. the first means that the values cannot be certainly measured and the second means that there is no certain value existent for them.

2007-07-11 02:03:26 · 11 answers · asked by Anonymous

In a particular experiment to study the photoelectric effect, the frequency of the incident light and the temperature of the metal are held constant. Assuming that the light incident on the metal surface causes electrons to be ejected from the metal, what happens if the intensity of the incident light is increased?

A. The work function of the metal decreases.
B. The number of electrons emitted from the metal per second increases.
C. The maximum speed of the emitted electrons increases.
D. The stopping potential increases.

Enter the letter(s) corresponding to the correct answer(s) in alphabetical order. For example, if you think that choices A and C are correct, enter AC.

2007-07-11 00:48:42 · 3 answers · asked by Anonymous