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Author Question: Which of the following is produced by the thermal vibrations of molecules? A) shock waves B) ... (Read 74 times)

abc

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on: Jul 29, 2018
Which of the following is produced by the thermal vibrations of molecules?
 
  A) shock waves
  B) visible
  C) pressure waves
  D) ultra-violet
  E) infra-red

Question 2

An auto weighing 3000 newtons has a forward drive force of 1000 newtons. Air resistance on the car is 100 newtons, and road resistance is 100 newtons. The auto moves along a straight level road. The net force on this auto is
 
  A) 200 newtons backward.
  B) 1000 newtons forward.
  C) 800 newtons backward.
  D) 1200 newtons forward.
  E) 800 newtons forward.


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wuly

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

E

Answer to Question 2

E


abc

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Reply 2 on: Jul 29, 2018
:D TYSM

nothere

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Reply 3 on: Yesterday
Excellent

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