Answer:
C. Overcome Friction
Explanation:
When using any machine usually those with moving parts, you may notice heat forming near the areas where most movement occurs. As friction continues, more energy is used up and released as heat. For that reason, the efficiency of a machine will forever be less than 100%
Silicon Dioxide is the answer
Recall that an Ampere is a current of one Coulomb per Second. If we divide total charge by current, we are left with time.
In this case, 112/56=2
2 Seconds.
