A guitar produces sound waves when a string is plucked and it vibrates. The measure of the number of the string's vibrations in 1 second is called .
a. speed
b. frequency
c. amplitude
d. wavelength

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to: