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Author Question: One of the major economic problems in less developed countries is ________. a. deforestation b. ... (Read 93 times)

Metfan725

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on: Jul 28, 2018
One of the major economic problems in less developed countries is ________.
 a. deforestation
  b. neglected use of solar energy
  c. dependence upon imported oil
  d. increased emission of greenhouse gases.

Question 2

The first of two identical boxes of mass m is sitting on level ground. The second box is sitting on a ramp that makes a 20 angle with the ground. The normal force of the level ground on the first box is NL; the normal force of the ramp on the second box is NR. Which statement is correct?
 a. NR = NL = mg.
  b. NL = mg; NR = mg sin 20.
  c. NL = mg; NR = mg cos 20.
  d. NL = mg; NR = -mg cos 20.
  e. NR = -NL = -mg.


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medine

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

c

Answer to Question 2

C


Metfan725

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


medine

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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