A complete, unbroken path through which electric charges can flow is a(n) a.
electric circuit.
b.
electrical resistance.
c.
magnetic field line.
d.
magnetic pole.

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?