Question

according to the law of conservation of energy, when a lawn mower uses 750 J of chemical energy from gasoline, how much of this energy will be transformed into mechanical, sound, or energy? A. 325 J B. 750 J C. 162 J D. 1500 J

Answer 1

conservation of energy
all of it should be transformed since the energy is convserved (neither destroyed nor created)
so answer is B