A crane lifts a 0.7 tonne (700 KG) air conditioning unit to the top of a skyscraper 122 m high. The lifting motor of the crane is rated at 3.5 kW, and it is 66% efficient. Calculate how long it takes to raise the air conditioning unit from ground level to the top to be installed.

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.

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

To a of 4 x hz is 1. 0. mm nm nm