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

Author Question: An electromagnetic wave with a peak magnetic field component of 3.2 10-7 T carries what average ... (Read 107 times)

PhilipSeeMore

  • Hero Member
  • *****
  • Posts: 561
on: Jul 28, 2018
An electromagnetic wave with a peak magnetic field component of 3.2  10-7 T carries what average power per unit area? (m0 = 4p  10-7 Tm/A, e0 = 8.85  10-12 C2/Nm2, and c = 3.00  108 m/s)
 a. 12 W/m2
  c. 2.7 W/m2
  b. 3.0 W/m2
  d. 1.3 W/m2

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. What is the frequency of the fork when the speed of sound is taken to be 340 m/s?
 a. 340 Hz
  c. 1020 Hz
  b. 680 Hz
  d. 170 Hz


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Sammyo

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

A


PhilipSeeMore

  • Member
  • Posts: 561
Reply 2 on: Jul 28, 2018
Excellent

EAN94

  • Member
  • Posts: 307
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event
That politics was always a rough business is shown in this cartoon, which shows Lincoln, assisted by That politics was always a rough business is shown in this cartoon, which shows Lincoln, assisted by
T wave (ventricular repolarization). T wave (ventricular repolarization).
Extracorporeal shock-wave lithotripsy. Acoustic shock waves generated by the shock-wave generator ... Extracorporeal shock-wave lithotripsy. Acoustic shock waves generated by the shock-wave generator ...
Tidal and wave power Tidal and wave power
Average real hourly wages (2010 dollars) by education level, full-time workers aged 17 to 34 in 2011 Average real hourly wages (2010 dollars) by education level, full-time workers aged 17 to 34 in 2011
Video: Action potentials - electrical characteristics and generation

For a complete list of videos, visit our video library