In a simple picture of the hydrogen atom, the electron moves in circular orbits around the central proton attracted by the coulomb force. the lowest (n = 1) energy orbit that is allowed for the electron is at a radius of 5.29 × 10–11 m . calculate the magnetic field strength at the proton due to the orbital motion of the electron in the n = 1 state.

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad

Relative to the ground below, how many joules of potential energy does a 1000-kg boulder have at the top of a 5-m ledge?