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 84 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?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Mitochondria known as power house of the cell Mitochondria known as power house of the cell
The New Solar Power Station Near Seville, Spain The New Solar Power Station Near Seville, Spain
Wave-Cut Platform and Marine Terrace Wave-Cut Platform and Marine Terrace
The Power of Classical Conditioning The Power of Classical Conditioning
Use the power rule to find derivative Use the power rule to find derivative
A solenoid has an area of 41.0 cm2. Find the change in magnetic flux through the solenoid. A solenoid has an area of 41.0 cm2. Find the change in magnetic flux through the solenoid.
Video: Mechanisms of capillary exchange (transcytosis & bulk flow)

For a complete list of videos, visit our video library