Quick what causes a diffuse reflection?

parallel light waves strike a rough, uneven surface and reflect in different directions.

light waves strike a smooth, polished surface at a 90 degree angle and are reflected back at a 45 degree angle.

light waves strike a rough, uneven surface at a 45 degree angle and are reflected back at a 90 degree angle.

parallel light waves strike a smooth, polished surface and reflect back in the same direction.

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?

(8%) problem 12. a bowling ball of mass mb 3 kg 's rolled down the lane with a velocity ofy-2/ m s lt strikes a single remaining pin mp 0.93 kg head on. after the collision the bowling ball has a velocity (in the same direction) of v2 1.1 m/s. = ▲ 33% part (a) write an expression for the velocity of pin in the horizontal direction after the impact, im ,, 33% part (b) what is the pins speed in ms? 33% part (c) assuming the coefficient of friction s μ,-0.1. how far in meters could the pin slide before stopping if it doesn't topple?

Robin is swinging back and forth from a trapeze. in which of the following situations is his kinetic energy being transformed into potential energy