AnswersPBCSD_Grade_Forgiveness_2003310_Physical Science_S2_2022Introduction to MachinesQuestion 7
7
QuizMultiple Choice

Introduction to Machines

Question 7 • PBCSD_Grade_Forgiveness_2003310_Physical Science_S2_2022

A machine has an efficiency of 70%. How much work does the machine do when 20,000 J of work is done on it?

Answer
A
14,000 J
B
28,600 J
C
1,400,000 J
D
2,860,000 J
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