As a longitudinal wave travels through a medium, it displaces the particles . parallel to the direction which the wave travels.
b. along the opposite plane of travel.
c. vertically along the direction that the wave travels.
d. perpendicular to the path of travel.

The 20@kg wheel has a radius of gyration about its center g of kg = 300 mm. when it is subjected to a couple moment of m = 50 n # m, it rolls without slipping. determine the angular velocity of the wheel after its mass center g has traveled through a distance of sg = 20 m, starting from rest.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?