Physics - October 2006

Can anybody figure out how many times harder you would have to hit a 12'' softball to travel the same distance as a 9" baseball. All conditions, wind, humidity, altitude, and temperature are the same.

2006-10-15 18:29:18 · 3 answers · asked by darrin2121 2

If I had one solar pannel connected to a battery, it's outputting X units of power.
A) What is that output power measured in? Volts? Watts? Other?
B) If I connect a second, identical pannel to the same battery, would I necessarily be getting 2X units of power?
C) What would the difference be if those two pannels were connected to the battery in series or in parallel?

2006-10-15 18:11:17 · 4 answers · asked by alphacheez 2

A body seems to look black when it absorbs all the wavelengths reflacts none.So why it is a colour.How a colour is possible witout wavelength.

2006-10-15 18:06:15 · 26 answers · asked by gobul 4

when conducting an experiment of falling bodies why is the distance of the steel ball measured from the bottom of the ball rather than the center of the steel?

2006-10-15 18:04:49 · 7 answers · asked by 3ajeeba_q8 2

The current in the electron beam of a computer monitor is 340 µA. How many electrons per second hit the screen?
electrons/s

2006-10-15 18:04:13 · 6 answers · asked by Anonymous

2006-10-15 18:00:51 · 2 answers · asked by Anonymous

convert 50mA to Amperes

2006-10-15 17:55:23 · 6 answers · asked by Anonymous

2006-10-15 17:50:31 · 5 answers · asked by 3ajeeba_q8 2

Please don't bother responding if your answer is that there is no formula because I don't believe it. Given the classic biliards ball setup, if two balls are approaching collision, both are moving (neither initial velocity equals zero) and neither ball is at rest. The resulting directions and velocities are unknown and that's what I want to find out. Can anyone help? Ahh, I've just realized that the path of one of the balls could be the x-axis could help, I'll think about that on the drive home. Can anyone help?

2006-10-15 17:33:20 · 6 answers · asked by Michael R. 1

The current in the electron beam of a computer monitor is 340 µA. How many electrons per second hit the screen?

_______ electrons/s

2006-10-15 17:31:06 · 2 answers · asked by Anonymous

2006-10-15 17:27:46 · 8 answers · asked by Anonymous

it lands 1.65m from the foot of the tabletop.
please explain steps. thank you.

2006-10-15 16:22:29 · 6 answers · asked by j a 1

You throw a ball straight up in the air so that it reaches a maximum height of 14.5 m. Is the magnitude of its acceleration greater while it is being thrown or after it leaves your hand?

2006-10-15 15:48:37 · 10 answers · asked by aberrantgeek 3

Imagine a movable massless pulley with a rope around it (no friction). One end of the rope is fixed to the ground, and the other hangs a mass. If I accelerate the movable pulley up, then the object will also accelerate up. What is the relationship between the two accelerations? (of the pulley and of the object)

2006-10-15 15:44:46 · 3 answers · asked by Leon L 1

Need more info on laser light...

From CNN:

http://archives.cnn.com/2000/TECH/space/07/20/speed.of.light.ap/#graph

Scientists have apparently broken the universe's speed limit.

For generations, physicists believed there is nothing faster than light moving through a vacuum -- a speed of 186,000 miles per second.

But in an experiment in Princeton, New Jersey, physicists sent a pulse of laser light through cesium vapor so quickly that it left the chamber before it had even finished entering.

The pulse traveled 310 times the distance it would have covered if the chamber had contained a vacuum.

2006-10-15 15:41:22 · 5 answers · asked by Anonymous

how much work is done by a person who picks up a 3-kg crate from the floor, raises it 2 m, and sends it flying with a speed of 4 m/s? and how?

2006-10-15 15:26:18 · 2 answers · asked by rocky s 1

A rifle is aimed horizontally at a target 50m away. The bullet hits the target 2cm below the aim point.

2006-10-15 15:24:23 · 2 answers · asked by Leslie P 1

Iv'e had this idea for a self-running air conditioner. This may seem an odd time, coming into colder seasons, but I'd still like to confirm the idea.

Heat is a form of energy, correct? Well, why can't something be powered by heat? How the machine basically works:

A certain mechanism/material absorbs the heat in the air ind comverts that into kinetic/electric energy. That energy rotates a fan, which pushes the now cooled air(the air which the heat was absorbed from).

Is there any way of implimenting this, and is it even possible?

2006-10-15 15:21:32 · 5 answers · asked by lewa 2

It's a science quistion and it's 9 letters.

2006-10-15 15:16:18 · 1 answers · asked by Bailey 2

2006-10-15 15:10:41 · 6 answers · asked by thegodfather 1

2006-10-15 15:05:53 · 4 answers · asked by Anonymous

2006-10-15 14:54:33 · 10 answers · asked by Star911 1

shows a picture of a pendelum @a-8oclock6oclock&5oclock

2006-10-15 14:52:41 · 3 answers · asked by gasguzlr76 2

It's 9 letters.

2006-10-15 14:49:26 · 3 answers · asked by Bailey 2

(A) ignore friction
(B) assume the effective coefficient of friction retarding the car is .25

2006-10-15 14:45:41 · 2 answers · asked by Anonymous

refraction of light from glass to air. The angle of incidence is 45 degrees and i need help figuring the angle of refraction of air. please include details of how to do this

2006-10-15 14:38:39 · 3 answers · asked by John L 1

It's 10 letters.

2006-10-15 14:37:38 · 4 answers · asked by Bailey 2

Is that what is going on in quantum mechanics when we talk about the equivalence of Schrodinger mechanics and Heisenberg matrix mechanics? Since one is a vector space composed of differential equations and the other a vector space composed of matrices. Is that why Dirac came up with bra ket notation...to express quantum mechanics in terms of a general vector space? I'm just curious.

2006-10-15 14:32:15 · 3 answers · asked by Link 5

How do you bring the dead back to life?

2006-10-15 14:31:36 · 7 answers · asked by Anonymous

A toy car has a kinetic energy of 12 Joules. What is the kinetic energy after a frictional force of 0.6 newtons has acted on it for 5 minutes?

2006-10-15 14:28:47 · 2 answers · asked by Greg P 1