Two machines are monitored for their efficiency. Machine A puts out 250J of work for every 800J of work input. Machine B provides 500J of work for every 1200J placed into the machine.
Which is more efficient? (1 point)
• Machine A
• Machine B
To determine which machine is more efficient, we can compare the output work to the input work for each machine.
Machine A: 250J of work output / 800J of work input = 0.3125 or 31.25% efficiency
Machine B: 500J of work output / 1200J of work input = 0.4167 or 41.67% efficiency
Therefore, Machine B is more efficient than Machine A.