Calculating heat gained or lost requires mass, specific heat , and
a) change in heat
b) relative humidity
c) change in temp
d) rate of temp change

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

What is the angular momentum of the bar about the axle?

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.