Besides a meter stick, what would you need to measure the velocity of a wave on a spring? a) the wave frequency
b) the wavelength of the wave
c) the wave amplitude d) a stopwatch

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

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:

Substances that assume the shape of their container, but do not have a definite size are called