Claudia is accelerating to get on the interstate. At the beginning of the south-facing on-ramp, she is traveling at 11 m/s. When she reaches the end
of the on-ramp 9.0 seconds later, she is traveling at 29 m/s. Assuming south
to be the negative direction, what is Claudia's average rate of acceleration
during this period?

A) 3.1m/s2

B) -3.1m/s

C) 1.9m/s2

D) -1.9m/s?

What is the increase in density of a medium due to wave travel?

Aheavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80hz. what is the mass of the sculpture?

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.