Wes stands on the roof of a building, leans over the edge, and drops a rock. Lindsay waits 1.30 s after Wes releases his rock and throws her own rock straight down at 26.0 m/s. Both rocks hit the ground simultaneously. 1) Calculate the common height from which the rocks were released. Ignore the effects of air resistance. (Express your answer to three significant figures.)

Which best represents the law of conservation of mass ?

What causes the formation of ocean currents?

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above