Recent content by Livect

The electron speed affects the current, as current is Q/t. Higher electron speed would mean higher current. So both would affect the induced magnetic field.

Your latter choice is correct; the different colors are still light, just separated by wavelength/frequency, and they would go back to the speed of light once they left the glass.

The problem is that a rubber band is not hookian -- it does not exert force linearly based on the distance it's stretched. Another problem is that, assuming the car goes along a horizontal, all of the energy of the rubber band goes to kinetic, and everything ends up as friction. I suppose you...

There is no theoretical limit to induced emf from flux if your wire is resistance-less. Yours probably isn't, so, since a longer wire would have more resistance, which affects current, which in turn affects the motor's output, there probably are limits. The speed of the motor probably wouldn't...

An electric field cannot travel faster than light.

If a field comes from a point source radially outwards (or at least can be thought of as one), then it's like a sphere made of field lines. Because a sphere's surface area is \pir^2, as r increases the surface area also increases, and the field lines would therefore decrease in an inverse square...

All matter exhibits both wavelike and particle-like properties, so one can't simply imagine firing a photon like one hits a golf ball. In fact, photons are one of the prime examples of wave-particle duality. It's actually one of the central topics of quantum mechanics, and I suggest a...

Contrary to what many believe, stars and black holes do not remain stationary as objects revolve around them. While the Earth is revolving around the sun, the entire solar system is actually turning around its center of mass. Since the sun has much more mass than the planets, the sun's movement...

Sage has some nice graphing abilities, and can graph 3D pretty well. http://www.sagemath.org/ One can download it or run it online at sagenb.org.