« previous next »

Author Question: Determine the intensity (in W/m2) of a harmonic longitudinal wave with a pressure amplitude of 8.0 ... (Read 79 times)

fahad

  • Hero Member
  • *****
  • Posts: 570
on: Jul 28, 2018
Determine the intensity (in W/m2) of a harmonic longitudinal wave with a pressure amplitude of 8.0  103 N/m2 propagating down a tube filled with helium. ( = 0.179 kg/m3, v = 972 m/s.)
 a. 3.7  107
  b. 1.8  107
  c. 9.2  108
  d. 4.6  108
  e. 1.5  109

Question 2

The variation in the pressure of helium gas, measured from its equilibrium value, is given by P = 2.9  105 cos (6.20x  3 000t) where x and t have units m and s. Determine the speed (in m/s) of the wave.
 a. 1 515
  b. 153
  c. 484
  d. 828
  e. 101


dreamfighter72

  • Sr. Member
  • ****
  • Posts: 355
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Guttation, the result of root pressure. Guttation, the result of root pressure.
Characteristics of the individual determine (a) whether they will be exposed to certain stressors ... Characteristics of the individual determine (a) whether they will be exposed to certain stressors ...
To measure engine oil pressure, remove the oil pressure sending (sender) unit usually located near ... To measure engine oil pressure, remove the oil pressure sending (sender) unit usually located near ...
Pressure Zones Drive Winds Pressure Zones Drive Winds
5-4 The relationship between vapor pressure and temperature—in this case for water. As the ... 5-4 The relationship between vapor pressure and temperature—in this case for water. As the ...
Wave Basics Wave Basics
Video: Acid-base imbalances - compensation of respiratory acidosis and alkalosis

For a complete list of videos, visit our video library