These states ofwater are simply physical changes. It has stayed the compound H2O throughout all of them. It had changes in phases but it never changed to anything but water.
Removing the foot from the accelerator means that no ac
"1 watt" means 1 joule of energy per second.
75 W means 75 joules/sec .
Energy = (75 Joule/sec) x (12 min) x (60 sec/min)
Energy = (75 x 12 x 60) (Joule-<em>min-sec</em> / <em>sec-min</em>)
<em>Energy = 54,000 Joules</em>
