Explain what causes beats and beating. a violinist tuning her violin plays her a-string while sounding a tuning fork at a 415 hz, and hears 5 beats per second. when she tightens the string, the beat frequency decreases. what should she do to tune the string to a, and what was the original untuned freq of her string?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.