Refraction occurs when a wave enters a new medium and changes its speed the crests of two waves overlap a wave bounces off the surface of a change in medium the troughs of two waves overlap

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.