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Author Question: What is the average value of the magnitude of the Poynting vector at 1 meter from a 100-watt ... (Read 151 times)

cartlidgeashley

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on: Jul 28, 2018
What is the average value of the magnitude of the Poynting vector at 1 meter from a 100-watt lightbulb radiating in all directions?
 a. 1 W/m2
  b. 4 W/m2
  c. 2 W/m2
  d. 8 W/m2
  e. 12 W/m2

Question 2

Find the force exerted by reflecting sunlight off a reflecting aluminum sheet in space if the area normal to the sunlight is 10,000 m2 and the solar intensity is 1350 W/m2.
 a. 0.72 N
  b. 0.09 N
  c. 9 N
  d. 45 N
  e. 0.18 N


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mtmmmmmk

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

d

Answer to Question 2

b


cartlidgeashley

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Reply 2 on: Jul 28, 2018
Gracias!

xiaomengxian

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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