What of cell tells you the size of what that the cell will give to the current that flows in the wires

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.