Suppose the ac voltage across and ac current through a circuit component both have frequency 10 rad/s. What is the frequency of the instantaneous power waveform

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.