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

Author Question: If a plane is flying at a speed so that the apex half-angle of its shockwave is 30, what is its ... (Read 239 times)

BrownTown3

  • Hero Member
  • *****
  • Posts: 564
on: Jul 28, 2018
If a plane is flying at a speed so that the apex half-angle of its shockwave is 30, what is its speed if the speed of sound is 320 m/s?
 a. 960 m/s
  b. 640 m/s
  c. 320 m/s
  d. 160 m/s
  e. Choose this answer if a shock wave cannot form in this situation.

Question 2

If a supersonic plane is flying at increasing speed as the temperature decreases, what happens to the Mach number in this instance?
 a. It stays the same.
  b. It increases.
  c. It decreases.
  d. It can do any of the above.
  e. It can do either (a) or (b) but not (c).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jossy

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

b


BrownTown3

  • Hero Member
  • *****
  • Posts: 564
Reply #2 on: Jul 28, 2018
TY


Jossy

  • Sr. Member
  • ****
  • Posts: 336
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

The Speed of Light Is Constant The Speed of Light Is Constant
In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many
A mere one-half percent of Americans owns over a quarter of the entire nation’s wealth. Very few ... A mere one-half percent of Americans owns over a quarter of the entire nation’s wealth. Very few ...
People with night eating syndrome may consume more than half their day's calories between 8 pm ... People with night eating syndrome may consume more than half their day's calories between 8 pm ...
Angle of fingernail Angle of fingernail
Finding the angle from a ratio (Part 2) Finding the angle from a ratio (Part 2)
Video: Neural regulation of blood pressure - baroreceptor and chemoreceptor reflexes

For a complete list of videos, visit our video library