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PHY 102 (Atoms to Galaxies), HW4, Bergfield (ISU)2021/2022 $12.97   Add to cart
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PHY 102 (Atoms to Galaxies), HW4, Bergfield (ISU)2021/2022
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  • PHY 102 , HW4, Bergfield

The SI units of work are A. Calories B. Kilocalories C. Joules D. Watts E. Newtons Answer- C. Joules An elevator lifts a person from the 1st floor to the 4th floor in 30s. If the power output of the elevator is 5800W, what is the work done by the elevator? A. 174,000 J B. 12,431 J C. 58,0...

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  • March 21, 2022
  • 4
  • 2021/2022
  • Exam (elaborations)
  • Questions & answers

Subjects

  • hw4
  • the si units of work are
  • what is
  • phy 102 atoms to galaxies
  • bergfield isu
  • an elevator lifts a person from the 1st floor to the 4th floor in 30s if the power output of the elevator is 5800w

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  • PHY 102 , HW4, Bergfield
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PHY 102 (Atoms to Galaxies), HW4,
Bergfield (ISU)

The SI units of work are
A. Calories
B. Kilocalories
C. Joules
D. Watts
E. Newtons Answer- C. Joules

An elevator lifts a person from the 1st floor to the 4th floor in 30s. If the power output of
the elevator is 5800W, what is the work done by the elevator?
A. 174,000 J
B. 12,431 J
C. 58,000 J
D. 58 J
E. none of these Answer- A. 174,000 J

A 75 kg man climbs the stairs to the fifth floor of a building, a total height of 16 m. His
potential energy has increased by approximately
A. 12000 J
B. 59000 J
C. 47000 J
D. 38000 J
E. 5900 J Answer- A. 12000 J

A ball rolling down an incline has its maximum kinetic energy at
A. the top.
B. a quarter of the way down.
C. halfway down.
D. three-quarters of the way down.
E. the bottom. Answer- E. the bottom.

The power required to exert 64N of force over a distance of 8m in 32 seconds is
A. 128 W
B. 32,000 W
C. 16 W
D. 96 W
E. impossible to predict Answer- C. 16 W

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