Chemistry, 16.10.2020 05:01 michelleperezmp58
Which of the following situations shows work is done on an object?
A. A student reading a book
B. A customer pushing a cart
C. A nurse holding the medicine tray
D. A patient sitting in the emergency room
2. It is the rate of doing work,
A. Energy
C. Time
B. Power
D. Work
3. The unit of power is
A. Joule
C. Second
B. Newton
D. Watt
4. A weightlifter presses a 400N weight 0.5m over his head in 25. What is the power of the weightlifter?
A. 25
C. 100 J
B. 25 W
D. 100 W
5. How much power is required to do 180) of work in 2.45?
A 75W
C. 178 W
B. 75 W
D.430 W
6. The following statements are true of work EXCEPT
A Work is a process of transferring energy
B. Work is done if the object is gaining mass.
C. If work is done on an object it gains energy
D. If work is done by an object its losses energy
7. Which of the following situations shows NO work is done?
A. A boy pushing his toy cart
B. An audience sitting on the bench
C. A janitor pushing a chair to the corner
D. A bride throwing her bouquet of flowers
PLEASE HELP
Answers: 3
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Which of the following situations shows work is done on an object?
A. A student reading a book
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