« previous next »

Author Question: Determine the intensity (in W/m2) of a harmonic longitudinal wave with a pressure amplitude of 8.0 ... (Read 36 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?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

A blow-off valve is used in some turbocharged systems to relieve boost pressure during ... A blow-off valve is used in some turbocharged systems to relieve boost pressure during ...
Vertical and Horizontal Changes in Pressure Vertical and Horizontal Changes in Pressure
Apply circular friction and direct pressure to suboccipital muscles one side at a time.Turn head to ... Apply circular friction and direct pressure to suboccipital muscles one side at a time.Turn head to ...
Get feedback every 5 to 7 minutes about cold intensity. Massage other areas while cold source is on ... Get feedback every 5 to 7 minutes about cold intensity. Massage other areas while cold source is on ...
Use of the elbow to apply pressure to trigger points in the trapezius with the receiver in sitting ... Use of the elbow to apply pressure to trigger points in the trapezius with the receiver in sitting ...
Wave-Cut Platform and Marine Terrace Wave-Cut Platform and Marine Terrace
Video: Glycolysis Animation

For a complete list of videos, visit our video library