This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A rocket with initial mass of 3.0 104 kg fires its engines at t = 0 . The exhaust speed of the ... (Read 58 times)

xclash

  • Hero Member
  • *****
  • Posts: 681
on: Jul 28, 2018
A rocket with initial mass of 3.0  104 kg fires its engines at t = 0 . The exhaust speed of the rocket is 3.9  103 m/s. If the velocity of the rocket at t = 200 s is 1 500 m/s, how much fuel did it consume?
 a. 9.6  103 kg
  b. 3.0  104 kg
  c. 4.4  104 kg
  d. 4.8  103 kg

Question 2

A satellite engine has an exhaust speed of 2.80  104 m/s and ejects ionized gas at a rate of 2.50  106 kg/s. What is the instantaneous thrust of the engine?
 a. 8.93  1011 N
  b. 7.00  102 N
 c. 5.30  102 N
 d. 1.12  1010 N


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

aruss1303

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

b


xclash

  • Hero Member
  • *****
  • Posts: 681
Reply #2 on: Jul 28, 2018
Thanks


aruss1303

  • Sr. Member
  • ****
  • Posts: 314
Reply #3 on: Jul 28, 2018
Welcome :)


« previous next »
 

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Mass Loss by a Supermassive Star Mass Loss by a Supermassive Star
The exhaust gases are pushed out of the cylinder by the piston on the exhaust stroke. The exhaust gases are pushed out of the cylinder by the piston on the exhaust stroke.
Change in Bone Mass over Time In your early years, more bone mass is added than lost in your body Change in Bone Mass over Time In your early years, more bone mass is added than lost in your body
A 23 kg mass is connected to a nail on a frictionless table by a massless string 1.3 m long. ... A 23 kg mass is connected to a nail on a frictionless table by a massless string 1.3 m long. ...
What is the density of 96 mL of a liquid that has a mass of 90.5 g? What is the density of 96 mL of a liquid that has a mass of 90.5 g?
Mass spectrometry for identifying an unknown protein isolated from a 2D gel Mass spectrometry for identifying an unknown protein isolated from a 2D gel
Video: Red Blood Cells - Erythropoietin (EPO)

For a complete list of videos, visit our video library