What happens to a light ray if it is incident on a reflective surface along the normal? a. the incident ray retraces its original path. b. the incident ray is reflected perpendicular to the normal. c. the incident ray is reflected at an angle to the normal. d. the incident ray is not reflected.

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.