When a machine is used to perform a task, work output is always more than work input. select the best answer from the choices provided t f?

Astate of matter all that has define volume and can flow is a(n)

Which feature of a heating curve indicates a change ofn state

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.