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Author Question: A rocket with an initial mass of 1000 kg adjusts its thrust by varying the rate at which mass is ... (Read 207 times)

MGLQZ

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on: Jul 28, 2018
A rocket with an initial mass of 1000 kg adjusts its thrust by varying the rate at which mass is ejected. The ejection speed relative to the rocket is 40 km/s. If the acceleration of the rocket is to have a magnitude of 20 m/s2 at an instant when its mass is 80 of the original mass, at what rate is mass being ejected at that instant? Ignore any external forces on the rocket.
 a. 0.40 kg/s
  b. 0.50 kg/s
  c. 0.60 kg/s
  d. 0.70 kg/s
  e. 0.80 kg/s

Question 2

A saturated hydrocarbon that is made up of eight
  carbon atoms and eighteen hydrogen atoms is
  named
  a) octane.
  b) butane.
  c) methane.
  d) ethane.


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tsternbergh47

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

a

Answer to Question 2

a


MGLQZ

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Reply 2 on: Jul 28, 2018
:D TYSM

jojobee318

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Reply 3 on: Yesterday
Excellent

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