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Author Question: If a virtual image is formed along the principal axis 15 cm from a concave mirror with the focal ... (Read 73 times)

tuffie

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on: Jul 28, 2018
If a virtual image is formed along the principal axis 15 cm from a concave mirror with the focal length 15 cm, what is the object distance from the mirror?
 a. 6.0 cm
  c. 30 cm
  b. 10 cm
  d. 7.5 cm

Question 2

Suppose working outside on a hot day someone generate 450 J of heat each second. If this energy is compensated for by the evaporation of sweat, how much water would be lost in an hour? The latent heat of fusion for water is 334 kJ/kg and for vaporization is 2,200 kJ/kg.
 a. 4.85 liter
  c. 0.50 liter
  b. 0.74 liter
  d. 1.5 liter


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scottmt

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

D

Answer to Question 2

B


tuffie

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Reply #2 on: Jul 28, 2018
Thanks


scottmt

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Reply #3 on: Jul 28, 2018
Welcome :)


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