An electric heater coil supplies 50 w of power to a metal block of mass 0.60 kg and raise the temperature of the block fromn 20*c to 45*c in 90 seconds. calculate the specifc heat capacity of metal

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

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.

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?