Physics - August 2007

Can anyone help me find info on the 32 quantum states of the electron, or Feynman's work on quantum computing?

2007-08-11 06:23:36 · 1 answers · asked by Evil Genius 3

2007-08-11 05:45:21 · 4 answers · asked by shujen l 2

2007-08-11 05:07:36 · 4 answers · asked by Anonymous

Every time, you are near???

2007-08-11 04:48:13 · 7 answers · asked by Way 5

The beach is x kilometers away . You drove to the beach at a rate of 60km/hr. How fast would you have to drive back to have gone the whole round trip at an average speed of 120km/hr?

I'm posting this in reference to another question I answered as a demonstration.

2007-08-11 04:23:43 · 5 answers · asked by Gary H 6

Example is a 110 v light bulb can light with the use of magnetic motor? can it be applicable with cars too?

2007-08-11 03:07:27 · 5 answers · asked by Anonymous

Why are they closer than they appear?

2007-08-11 03:06:30 · 11 answers · asked by kangaroo 4

2007-08-11 02:48:05 · 3 answers · asked by Anonymous

Why is that a wire carrying current acts like a magnet?
You're a genius if you know....

2007-08-11 02:02:34 · 10 answers · asked by Anonymous

please indicate the combinations of their combinations!!!

2007-08-11 01:37:02 · 8 answers · asked by Anonymous

Mass=4kg(M), which is immobile and is standing on the equillibrium point,is attached on a spring with k=1600N/m.We move the mass M from the equillibrium spending energy E=288 J and sometime we set it free to move.At the moment the mass M passes from the point D which is d1=0.3*sq.root3 m away from the equillibrium, it collides (headon collision) plastically with another mass m=12 Kg which is moving with u2 velocity oposite from the velocity of M.

Find
1)the velocity of the body (M+m) which is created,just after the collision.
2)the heat produced because of the collision and the energy of the oscillation.
3)the equation of the X of the body (M+m)from the equillibrium,assuming that the moment t=0 the collision happened.(the direction of m is the positive one).
4)When will the body(m+M) pass from the point D for the first time after the collision?

Hint:M is moving to the left,m is moving to the right.

2007-08-10 23:56:21 · 1 answers · asked by Joey 1

Isotopes are elements with varying amount of neutrons, right? How do those elements become isotopes? Also, they emit radiation, right? But if neutrons have no charge and just have atomic weight, where is the radiation coming from? From the emission of neutrons?

2007-08-10 21:15:56 · 4 answers · asked by Anonymous

I'm trying to research a particular nuclear reactor (there are sevearl types). Features should include how it works (in detail) & other info on when it was created and opened for use. The detail that I'm looking for has t be very extensive and precise (e.g how the nuclear power is generated in the reactor by the means of fission reaction of Uranium-238)
Can anyone provide me with a good source where there's everything I need to know including diagrams & stuff?
Furthermore, the nuclear reactor must have ALL info on it & when I mean all I mean ALL, so that it tells me everything about that reactor.
Thanks...

2007-08-10 20:26:40 · 2 answers · asked by Anonymous

When spraying paint, why is it that less paint is wasted if the object is charged??

2007-08-10 19:54:23 · 2 answers · asked by sdjfhdkjsfgkuae 2

In Physics

2007-08-10 19:01:31 · 15 answers · asked by chitha 1

1. A convace shaving mirror has a focal lenght of 33cm. Calculate the image position of a cologne bottle placed in front of the mirror at a distance of 93 cm. Calculate the magnification of the image. Is the image real or virtual. Is the image inverted or upright. How large is the image formed in respect to the object?

2. A pen places 11 cm from a concave spherical mirror produces a real image 13.2 from the mirror. WHat is the focal length of the mirror. WHat is the magnification of the image. If the pen is placed 27.0 cm from the mirror, what is the new position of the image? What is the magnification of the new image? Is the new image real or virtual?

2007-08-10 17:42:02 · 1 answers · asked by confused ~ 1

2007-08-10 16:30:33 · 4 answers · asked by curios 1

Find the altitude of an isosceles triangle with sides of 13 inches and a base of 10 inches.

2007-08-10 16:20:25 · 9 answers · asked by G 1

1.a physics student lifts her 2kg pet rock 2.8m straight up. He then lets it drop to the ground. Use the Law of Conservation of Mechanical Energy to calculate how fast the rock will be moving (a)half way down and (b)just before it hits the ground
2.A 65kg girl is running with a speed of 2.5m/s. How much kinetic energy does she have? She grabs on to a rope which is hanging from the ceiling, and swings from the end of the rope. How high off the ground will she swing?
3.How much kinetic energy will the 80kg skier sliding down the frictionless slope have when he is 2/3 of the way down the ramp? The vertical height of the ramp is 60m.
4.A rubber ball falls from a height of 2m, bounces off the floor and goes back up to a height of 1.6m. What percentage of its initial gravitational potential energy has been lost? Where does this energy go? Has the Law of Conservation been violated?
5.How much work must be done to increase the speed of a 12kg bike ridden by a 60kg from 8.2m/s to 12.7m/s?

2007-08-10 16:12:04 · 3 answers · asked by Anonymous

Lets say it is 10:00 PM on Friday and you get into the time machine and travel back to 10:00 PM Wednesday, wouldn't you end up appearing in space somewhere due to the movement of the planets around the sun?

2007-08-10 15:38:43 · 9 answers · asked by Anonymous

I really want to know... Can you tell me pls? Thanks a lot!

2007-08-10 15:29:05 · 3 answers · asked by Nostradamus 3

This came from my textbook called Physics for Scientist and Engineers, and there are two problems I'm having trouble with (This is my AP Physics summer HW)

1) The consumption of natural gas by a company satisfies the empirical equation V= 1.50t + 0.00800t^2, where V is the volume in millions of cubic feet and t the time in months. Express this eq in units of cubic feet and seconds. Put the proper units on the coefficients. Assume a month is 30.0 days.

2)When a droplet of oil spreads out on a smooth water surface, the resulting "oil slick" is approx. one molecule thick. An oil droplet of mass 9.00 X 10^--7 kg and density 918 kg/m^3 spreads out into a circle of radius 41.8 cm on the water surface. What is the diameter of an oil molecule?

If you got those, thank you very much, but really, i don't expect you to solve those, but i'm desperate, and if there happens a guy who can solve those, i'll be lucky.

2007-08-10 14:20:14 · 5 answers · asked by serpentine022 2

They say that if you fall out of a building or bridge, you die in the air before you hit the ground. Yet, if you sky dive, you fall not only farther, but much faster, yet your body is totally fine. Is it true death comes during the actual fall (out of a building)? And if so, why?

2007-08-10 12:50:13 · 14 answers · asked by Enlightened 1

I would think an open palm since your using your pectoral muscles and have a greater range of motion, thus generating more power. Though the classic back-hand employs the use of a non-flexed wrist and also is seen more in popular culture as the marquee technique to knock someone down, not to mention the embarrassment factor of being back-handed.

2007-08-10 12:42:42 · 2 answers · asked by Derek M 2

The motion of an object is described by the equation below.

x = (0.30 m) cos(pi t/7)
Find the frequency of the motion.
Hz
Find the period of the motion.
s

2007-08-10 12:35:18 · 2 answers · asked by Anonymous

1. Satellite ground operators use the feedback from a device called magnetometer, which senses the direction of Earth's magnetic field, to decide which torque coil to activate. what direction will the magnetometer read for earth's magnetic field whrn the satellite passes over earth's equator.

2. In order to protect other equipment, the body of a satellite must remain unmagnetized, even when the torque coils have been activated. Would hard or soft magnetic materials be best for building the rest of the satellite?

2007-08-10 12:13:32 · 2 answers · asked by Brilliant Queen (BQ)_forever !!! 5

2007-08-10 11:27:44 · 13 answers · asked by Anonymous

Mass=1kg(M), which is immobile and is standing on the equillibrium point,is attached on a spring with k=400N/m.We move the mass M to a point D which is d=0.2 m away from the equillibrium and then we set it free to move.At the moment t=0 the mass M passes from the equillibrium for the first time and it collides (headon collision) plastically with another mass m=3 Kg which is moving with u2 velocity.The new (M+m) body just after the collision has a velocity with the same direction of the velocity of mass M just before the collision and it immobilizes for a moment for the first time after its creation to a point E which is d1=0,25m away from D.
Find
1) the Energy of the oscillation of the body (M+m)
2)the u2.
3)the percentage of the kinetic energy of the wo masses beforethe collision,which turnd into heat because of the collision.

Hint:m1 is moving to the left,m2 is moving to the right.

2007-08-10 10:54:41 · 1 answers · asked by Joey 1

2007-08-10 10:53:20 · 16 answers · asked by knightmare365 2

You are in a rowboat on a lake and a speed boat passes you. your boat starts to bob up and down. you observe that you bob every .d seconds and the waves are 2.5 m apart. what is the wave speed?

2007-08-10 10:39:29 · 2 answers · asked by Anonymous