Answers LHS Physical Science Unit Test — Cumulative examQuestion 6

6

RCMultiple Choice

Unit Test — Cumulative exam

Question 6 • LHS Physical Science

Carlota does 2000 J of work on a machine. The machine does 500 J of work. What is the efficiency of the machine?

Answer

A

4%

B

25%

C

75%

D

400%

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