A simlple machine of velocity ratio 20 is used to lift a load of 600N by applying effort of 40N. Calculate the mechanical advantage and efficiency Of the machine. it a science numerical can you tell me the answer by step by step​

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line