15. A boy on board a cruise ship drops a 30.0 gram marble into the ocean. If the resistive force proportionality constant is 0.50 kg/s, what is the terminal speed of the marble in m/s?

a. 0.06
b. 0.294
c.0.588
d. 60.0
e. 588.0

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up