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Author Question: In another solar system, a planet has an airless moon Zygo that is 4.0 105 m in diameter. ... (Read 60 times)

abern

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In another solar system, a planet has an airless moon Zygo that is 4.0  105 m in diameter. Experiments reveal that a freely falling object at the surface of Zygo accelerates at 0.20 m/s2. What is the mass of Zygo? (G = 6.67  10-11 N  m2/kg2)
 
  A) 2.4  1019 kg
  B) 4.8  1019 kg
  C) 1.2  1020 kg
  D) 2.4  1020 kg
  E) 4.8  1020 kg

Question 2

How many joules of energy are required to accelerate a 1.0-kg rock from rest to a speed of 0.866c? (c = 3.0  108 m/s)
 
  A) 1.8  1017 J
  B) 9.0  1016 J
  C) 3.0  103 J
  D) 3.3  1016 J


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srodz

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abern

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Reply 2 on: Jul 29, 2018
:D TYSM


raili21

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Reply 3 on: Yesterday
Excellent

 

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