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Author Question: Sputnik I was launched into orbit around Earth in 1957. It had a perigee (the distance from the ... (Read 14 times)

robinn137

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on: Jul 29, 2018
Sputnik I was launched into orbit around Earth in 1957.
 
  It had a perigee (the distance from the point of closest approach to the center of Earth) of 6.61  106 m and an apogee (the distance from the furthest point in the orbit to the center of Earth) of 7.33  106 m. Its mass was 83.5 kg. What was the difference in kinetic energy as it moved from perigee to apogee? The mass of Earth is 5.97  1024 kg and G = 6.67 x 10-11 Nm2/kg2.
  A) 8.27  107 J
  B) 6.44  107 J
  C) 1.93  108 J
  D) 3.50  108 J
  E) 4.94  108 J

Question 2

Fissioning a lead nucleus would yield a net
 
  A) absorption of energy.
  B) release of energy.
  C) neither of these


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rnehls

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

E

Answer to Question 2

Answer: B


robinn137

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

epscape

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Reply 3 on: Yesterday
Wow, this really help

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