A small mailbag is released from a helicopter that is descending steadily at 1.00 m/s. (a) After 5.00 s, what is the speed of the mailbag

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.

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

Ahurricane sweeps across the ocean and damages the houses of people living along the coast. which of these does not play any role in this interaction? air water glaciers living things