« previous next »

Author Question: What mass ratio is required to launch a rocket from the surface of Mars (escape velocity = 5.0 km/s) ... (Read 26 times)

captainjonesify

  • Hero Member
  • *****
  • Posts: 543
on: Jul 27, 2018
What mass ratio is required to launch a rocket from the surface of Mars (escape velocity = 5.0 km/s) if its engines produce an exhaust velocity of 3.0 km/s?
 
  A) 1.8
  B) 5.3
  C) 6.9
  D) 7.4

Question 2

A cylinder, of radius 8.0 cm, rolls 20. cm in 5.0 s. Through what angular displacement does the cylinder move in this time?
 
  What will be an ideal response?


blazinlyss

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

143


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Independent assortment of chromosomes at meiosis explains Mendel's ratio Independent assortment of chromosomes at meiosis explains Mendel's ratio
Surface of the heart. Surface of the heart.
Post–Main-Sequence Evolution of Low-Mass Stars Post–Main-Sequence Evolution of Low-Mass Stars
viable surface sampling using contact plates viable surface sampling using contact plates
Bidirectional Thumb Pressure on Plantar Surface. Apply bidirectional thumb pressure over the entire ... Bidirectional Thumb Pressure on Plantar Surface. Apply bidirectional thumb pressure over the entire ...
Major Surface-Ocean Currents Major Surface-Ocean Currents
Video: Interview with Person having Obsessive Compulsive Disorder

For a complete list of videos, visit our video library