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Author Question: Which of the following air pollutants is emitted in about equal amounts by stationary and mobile ... (Read 120 times)

bio_gurl

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on: Jul 28, 2018
Which of the following air pollutants is emitted in about equal amounts by stationary and mobile sources?
 a. particulates
  b. carbon monoxide
  c. sulfur dioxides
  d. hydrocarbons
  e. nitrogen oxides

Question 2

A 5.0-kg mass is attached to the ceiling of an elevator by a rope whose mass is negligible. What force does the mass exert on the rope when the elevator has an acceleration of 4.0 m/s2 upward?
 a. 69 N downward
  b. 29 N downward
  c. 49 N downward
  d. 20 N downward
  e. 19 N downward


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millet

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

e

Answer to Question 2

A


bio_gurl

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Reply 2 on: Jul 28, 2018
Gracias!

tranoy

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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