Is this right? I think i am but i wanna make sure

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.

James joule carefully measured the difference in temperature of the water at the top and bottom of a waterfall. why did he expect a difference