Final answer:
The efficiency of a machine that produces 67.0 J of output work with an input of 150.0 J is 44.67%.
Step-by-step explanation:
To calculate the efficiency of a machine, the formula Efficiency (Eff) = (Wout / Win) × 100% is used, where Wout represents the output work the machine produces and Win represents the input work or energy consumed by the machine. Given that the machine produces 67.0 J of output work when 150.0 J of work is input, the efficiency can be calculated as follows:
Eff = (67.0 J / 150.0 J) × 100% = 44.67%
Therefore, the efficiency of the machine is 44.67%.