A force of 100. newtons is used to move an object a distance of 15 meters with a power of 25 watts. Find the time it takes to do the work.

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?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current