Identify the scenarios below as to whether they would increase, decrease, or not change the velocity of the sound wave. Assume that no other changes are happening. a. Lowering the humidity of the air
b. Increasing the temperature of the air
c. Leaving the density of the air constant
d. Changing the direction of the wind so that it's blowing in the opposite direction of the sound wave

In what direction does the medium move relative to the direction of the wave? explain.

The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.