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Author Question: About 1350 W/m2 of electromagnetic energy reaches the upper atmosphere of the earth from the sun, ... (Read 90 times)

stock

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on: Jul 29, 2018
About 1350 W/m2 of electromagnetic energy reaches the upper atmosphere of the earth from the sun, which is 1.5  1011 m away. Use this information to estimate the average power output of the sun.
 
  A) 1  1026 W
  B) 2  1026 W
  C) 3  1026 W
  D) 4  1026 W

Question 2

A flat coil having 160 turns, each with an area of 0.20 m2, is placed with the plane of its area perpendicular to a magnetic field of 0.40 T.
 
  The magnetic field changes uniformly from 0.40 T in the +x direction to 0.40 T in the -x direction in 2.0 s. If the resistance of the coil is 16 , at what rate is power generated in the coil during this change?
  A) 5.0 W
  B) 10 W
  C) 15 W
  D) 20 W


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qytan

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Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

B


stock

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

xiazhe

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Reply 3 on: Yesterday
:D TYSM

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