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Author Question: Who started launching liquid-filled rockets in the United States in 1926? A) Robert Goddard B) ... (Read 61 times)

Garrulous

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on: Jul 27, 2018
Who started launching liquid-filled rockets in the United States in 1926?
 
  A) Robert Goddard
  B) Konstantin Tsiolkovsky
  C) Hermann Oberth
  D) Wernher von Braun

Question 2

We can best understand how a diver is able to control his rate of rotation while in the air (and thus enter the water in a vertical position) by observing that while in the air
 
  A) his linear momentum is constant.
  B) his potential energy is constant.
  C) his kinetic energy is constant.
  D) his angular momentum is constant.
  E) his total energy is constant.


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af

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

D


Garrulous

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Reply 2 on: Jul 27, 2018
Excellent

bitingbit

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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