The galaxy NGC 4414 is moving away from us at 7.16x105 m/s. By how much will the
frequency of the 6.91x1014 Hz hydrogen line
be shifted in the galaxy's spectrum?
(Answer is x1012 Hz. Just fill in the
number in the blank, not the power.)

To create electromagnetic induction, which of the following has to move? a. a wire b. a magnet c. a transformer d. either a or b

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? o a. resistance is directly related to length. ob. resistance is directly related to the square of the length. c. resistance is inversely related to the length. d. resistance is inversely related to the square of the length. reset next