Calculate the efficiency of a machine that produces 800J of work for every 2000J of work placed into the machine, and show your work. (page 6)
Efficiency is calculated using the formula:
Efficiency = (Output/Input) * 100%
Given that the machine produces 800J of work (output) for every 2000J of work (input) placed into the machine, we can plug these values into the formula:
Efficiency = (800J/2000J) * 100%
Efficiency = 0.4 * 100%
Efficiency = 40%
Therefore, the efficiency of the machine is 40%.