A beam of monochromatic light of wavelength 6.00 x 10-7 m approaches a barrier having four openings, A, B, C, and D, of different sizes as shown below Which opening will cause the least diffraction?

The man fires an 80 g arrow so that it is moving at 80 m/s when it hits and embeds in a 8.0 kg block resting on ice. how far will the block slide on the ice before stopping? a 7.1 n friction force opposes its motion.

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds