If the light ray hits a mirror at a 40° angle (above picture), what angle will the ray of light be reflected? *
4 points
140°
40°
50°
90°

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.