The velocity ratio of a pullery systerm is 2 ,if the efficiency is 75% what is mechanical advantage? If the load is 120N what work is done by the effort if the load is lifted 0.5m?How much energy is wasted?

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

True or false graphs must include scales that increase by the same amount

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.