a plane mirror is fixed so that it is at an angle of 45° to a table. a ray of light, a ray of light, initially parallel ro the table, is incident on the mirror. which angle does the reflected ray make with the table from the incident ray of light

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.