The sweeping second hand on your wall clock is 16 cm long. Assume the second hand moves smoothly. Part A What is the rotational speed of the second hand? Express your answer in radians per second to two significant figures. ω = nothing rad/s Request Answer

Which feature of a heating curve indicates a change ofn state

Explain why electric current cannot exist if a current doesn't have a voltage source.

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)