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

Author Question: A circular coil lies flat on a horizontal surface. A bar magnet is held above the center of the coil ... (Read 49 times)

stephzh

  • Hero Member
  • *****
  • Posts: 556
on: Jul 29, 2018
A circular coil lies flat on a horizontal surface. A bar magnet is held above the center of the coil with its north pole pointing down.
 
  If the magnet is dropped from this position what is the direction of the induced current in the coil, as viewed from above? A) counterclockwise
  B) clockwise
  C) An emf but no current is induced in the coil.
  D) There is no current in the coil.

Question 2

What is the frequency of 20-mm microwaves? (c = 3.0  108 m/s)
 
  A) 100 MHz
  B) 400 MHz
  C) 15 GHz
  D) 73 GHz


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nhea

  • Sr. Member
  • ****
  • Posts: 305
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


stephzh

  • Hero Member
  • *****
  • Posts: 556
Reply #2 on: Jul 29, 2018
Thank you!


nhea

  • Sr. Member
  • ****
  • Posts: 305
Reply #3 on: Jul 29, 2018
Always glad to help...


« previous next »
 

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?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

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.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Horizontal stroking across the lower back. Horizontal stroking across the lower back.
Circular friction around the ankle with the fingertips. Applying pressure with the fingertips, move ... Circular friction around the ankle with the fingertips. Applying pressure with the fingertips, move ...
Using oil or lotion, apply circular strokes on abdomen with fingertips. Move in a clockwise ... Using oil or lotion, apply circular strokes on abdomen with fingertips. Move in a clockwise ...
Viral single-strand DNA (circular) Viral single-strand DNA (circular)
Surface ocean currents Surface ocean currents
A 1000-kg car is slowly picking up speed as it goes around a horizontal unbanked curve whose ... A 1000-kg car is slowly picking up speed as it goes around a horizontal unbanked curve whose ...
Video: PET Scan Animation

For a complete list of videos, visit our video library