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 89 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?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

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

Did you know?

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

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

An example of horizontal gene transfer: antibiotic resistance An example of horizontal gene transfer: antibiotic resistance
Surface Features on Titan Surface Features on Titan
View of the bottom surface of the human brain. View of the bottom surface of the human brain.
A track inside an ignition coil is not a short, but rather it is a low-resistance path or hole that ... A track inside an ignition coil is not a short, but rather it is a low-resistance path or hole that ...
Stretching the shoulder muscles with arm in horizontal flexion. Stretching the shoulder muscles with arm in horizontal flexion.
Depictions of the transformations leading to the supercoiling of circular DNA Depictions of the transformations leading to the supercoiling of circular DNA
Video: Febrile Seizure

For a complete list of videos, visit our video library