To produce hydroelectric power, is needed

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

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

The radius of an atom is closest in size to a