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Author Question: Using 1000 J of work, a toy elevator is raised from the ground floor to the second floor in 20 s. ... (Read 78 times)

rl

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  • Posts: 579
on: Jul 29, 2018
Using 1000 J of work, a toy elevator is raised from the ground floor to the second floor in 20 s. How much power does the elevator use?
 
  A) 20 W
  B) 50 W
  C) 100 W
  D) 1000 W
  E) 20,000 W

Question 2

For light waves, different frequencies mean different
 
  A) colors.
  B) speeds.
  C) brightness.
  D) amplitudes.
  E) None of the above.


aliotak

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  • Posts: 326
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

A


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