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 147 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?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Lioness in a burst of speed while hunting in the Serengeti Lioness in a burst of speed while hunting in the Serengeti
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
On some engines, it is necessary to watch the direction the rotor is pointing to help determine how ... On some engines, it is necessary to watch the direction the rotor is pointing to help determine how ...
How to solve a distance, time, speed problem using linear algebra How to solve a distance, time, speed problem using linear algebra
For toluene (shown below), you would expect to see which m/z fragment in the mass spectrum? For toluene (shown below), you would expect to see which m/z fragment in the mass spectrum?
Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ... Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ...
Video: Introduction to Insulin

For a complete list of videos, visit our video library