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Author Question: The observation of a wet spot on a hot highway in the summer is caused by a. dispersion. b. ... (Read 37 times)

ghost!

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on: Jul 28, 2018
The observation of a wet spot on a hot highway in the summer is caused by
 a. dispersion.
  b. diffraction.
  c. refraction.
  d. reflection.

Question 2

A 1000-kg automobile moving with a speed of 24 m/s relative to the road collides with a 500-kg automobile initially at rest. If the two stick together, what is the velocity in m/s of the two cars after the collision according to an observer in a truck moving 10 m/s in the same direction as the moving cars?
 a. 6
  b. 11
  c. 24
  d. 26
  e. 31


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abro1885

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Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

a


ghost!

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Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

nyrave

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Reply 3 on: Yesterday
Excellent

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