Achild generates 42 w of power as she pulls a wagon forward across a flat sidewalk with a force of 70 n. the child pulls with this force for 4.5 minutes. what distance does the wagon move?

110 m

160 m

75 m

210 m

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.

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

Which sound characteristic is not affected by the relative motion of an object