Question

1. in this multiple energy conversion example, is all the energy of the bikers food transferred to raising the waters temperature at a 1:1 ratio? why or why not? no, because energy is destroyed when the biker uses it to pedal. yes, because energy cannot be created or destroyed, so all of it must go directly into heating the water. no, because some of the energy is transferred as heat and sound from friction in the bike, gears, and generator. yes, because chemical energy from food always fully converts into heat energy with 100% efficiency.

Explanation:

According to the law of conservation of energy, energy is not destroyed but transformed. In real - world energy conversion processes like this one, there are inefficiencies. Friction in the bike, gears, and generator causes energy to be lost as heat and sound, so not all the energy from the bikers' food goes into heating the water.

Answer:

No, because some of the energy is transferred as heat and sound from friction in the bike, gears, and generator.