Author Question: Photon A has twice the momentum of photon B as both of them are traveling in vacuum. Which ... (Read 44 times)

cookcarl · **on:** Jul 29, 2018

Photon A has twice the momentum of photon B as both of them are traveling in vacuum. Which statements about these photons are correct? (There could be more than one correct choice.)

A) Photon A is traveling twice as fast as photon B.
B) Both photons have the same speed.
C) Both photons have the same wavelength.
D) The wavelength of photon A is twice as great as the wavelength of photon B.
E) The wavelength of photon B is twice as great as the wavelength of photon A.

Question 2

Two forces produce equal torques on a door about the door hinge. The first force is applied at the midpoint of the door; the second force is applied at the doorknob. Both forces are applied perpendicular to the door.

Which force has a greater magnitude? A) the first force (at the midpoint)
B) the second force (at the doorknob)
C) The two forces are equal.