Author Question: The half-angle of the conical shock wave produced by a supersonic aircraft is 60. What is the ratio ... (Read 72 times)

Jkov05

  • Hero Member
  • *****
  • Posts: 556
The half-angle of the conical shock wave produced by a supersonic aircraft is 60. What is the ratio of the speed of the aircraft to the speed of sound?
 
  A) 2.0 B) 1.7 C) 0.87 D) 1.2

Question 2

A 1.10-kg wrench is acting on a nut trying to turn it. The length of the wrench lies directly to the east of the nut. A force 150.0 N acts on the wrench at a position 15.0 cm from the center of the nut in a direction 30.0 north of east.
 
  What is the magnitude of the torque about the center of the nut? A) 22.5 Nm
  B) 11.3 Nm
  C) 19.5 Nm
  D) 2250 Nm
  E) 1949 Nm



johnharpe

  • Sr. Member
  • ****
  • Posts: 338
Answer to Question 1

D

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

For a complete list of videos, visit our video library