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

Author Question: A radio wave transmits 4.8 W/m2 average power per unit area. What is the peak value of the ... (Read 89 times)

savannahhooper

  • Hero Member
  • *****
  • Posts: 576
on: Jul 28, 2018
A radio wave transmits 4.8 W/m2 average power per unit area. What is the peak value of the associated magnetic field? (m0 = 4p  10-7 Tm/A and c = 3.00  108 m/s)
 a. 1.0  10-7 T
  c. 2.0  107 T
  b. 8.4  10-3 T
  d. 30 T

Question 2

A tuning fork is sounded above an adjustable length resonating tube (one end closed), which resonates at a length of 0.250 m and again at 0.750 m. If the tube length were extended further, at what point will the tuning fork again create a resonance condition?
 a. 1.75 m
  c. 1.25 m
  b. 1.50 m
  d. 1.00 m


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

matt

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

C


savannahhooper

  • Hero Member
  • *****
  • Posts: 576
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


matt

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri
Mirror Neurons in Broca’s Area Mirror Neurons in Broca’s Area
Durable power of attorney. Durable power of attorney.
Albert Bierstadt, The Rocky Mountains, Lander's Peak, (detail). Albert Bierstadt, The Rocky Mountains, Lander's Peak, (detail).
Wind Power Wind Power
Place sheet or towel over area to be heated. Use sufficient heat barrier for the heat source used. ... Place sheet or towel over area to be heated. Use sufficient heat barrier for the heat source used. ...
Video: Methods that regulate pH

For a complete list of videos, visit our video library