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Author Question: One can increase the insolation upon a one ft2 horizontal plate by ________. a. using a fresnel ... (Read 30 times)

acc299

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on: Jul 28, 2018
One can increase the insolation upon a one ft2 horizontal plate by ________.
 a. using a fresnel lens of one ft2
  b. using two 1 ft2 fresnel lenses, one on top of the other
  c. adding reflectors around the plate
  d. increasing the temperature of the plate
  e. increasing the absorption of the plate

Question 2

A horizontal uniform meter stick supported at the 50-cm mark has a mass of 0.50 kg hanging from it at the 20-cm mark and a 0.30 kg mass hanging from it at the 60-cm mark. Determine the position on the meter stick at which one would hang a third mass of 0.60 kg to keep the meter stick balanced.
 a. 74 cm
  b. 70 cm
  c. 65 cm
  d. 86 cm
  e. 62 cm


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firehawk60

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

c

Answer to Question 2

B


acc299

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


firehawk60

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


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