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

Author Question: Neglecting gravity, doubling the exhaust velocity from a single stage rocket initially at rest ... (Read 70 times)

jace

  • Hero Member
  • *****
  • Posts: 541
on: Jul 28, 2018
Neglecting gravity, doubling the exhaust velocity from a single stage rocket initially at rest changes the final kinetic energy of the burnout stage by what factor? Assume all other variables, such as the mass of the rocket and the mass of the fuel, do not change.
 a. It is the same.
  b. It doubles.
  c. It quadruples.
  d. It increases by a factor of 1.693.

Question 2

At liftoff, the engines of the Saturn V rocket consumed 12 500 kg/s of fuel and exhausted the combustion products at 2 700 m/s. What was the total upward force (thrust) provided by the engines?
 a. 3.38E+7 N
  b. 4.63E+6 N
  c. 2.16E+5 N
  d. 3.48E+7 N
  e. 3.28E+7 N


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ambernicolefink

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

a


jace

  • Member
  • Posts: 541
Reply 2 on: Jul 28, 2018
:D TYSM

bbburns21

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

The vertebrate single-lens eye. The vertebrate single-lens eye.
Gravity Gravity
A photograph of Commodore Matthew Perry in 1855 juxtaposed with a Japanese portrait of him. When Per A photograph of Commodore Matthew Perry in 1855 juxtaposed with a Japanese portrait of him. When Per
If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is
A sled having a certain initial speed on a horizontal surface comes to rest after traveling 10 ... A sled having a certain initial speed on a horizontal surface comes to rest after traveling 10 ...
The structural genes of the lac operon are transcribed into a single polycistronic mRNA The structural genes of the lac operon are transcribed into a single polycistronic mRNA
Video: Role of complement proteins

For a complete list of videos, visit our video library