« previous next »

Author Question: A coil is placed in a changing magnetic field and an emf is induced. What happens to the induced emf ... (Read 315 times)

gonzo233

  • Hero Member
  • *****
  • Posts: 557
on: Jul 28, 2018
A coil is placed in a changing magnetic field and an emf is induced. What happens to the induced emf if the rate of change of magnetic field doubles?
 a. The emf quadruples.
  c. There is no change.
  b. The emf increases by a factor of 16.
  d. The emf doubles.

Question 2

A car with bad shocks bounces up and down with a period of 1.50 s after hitting a bump. The car has a mass of 1250 kg and is supported by four springs of force constant k. What is k for each spring?
 a. 6580 N/m
  c. 4440 N/m
  b. 5480 N/m
  d. 3630 N/m


fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« 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?

Your heart beats over 36 million times a year.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
The left-hand rule states that if a coil is grasped with the left hand, the fingers will point in ... The left-hand rule states that if a coil is grasped with the left hand, the fingers will point in ...
A typical two-wire coil-on-plug ignition system showing the triggering and the switching being ... A typical two-wire coil-on-plug ignition system showing the triggering and the switching being ...
Terminals 85 and 86 represent the coil inside the relay. Terminal 30 is the power terminal, 87a is ... Terminals 85 and 86 represent the coil inside the relay. Terminal 30 is the power terminal, 87a is ...
Changing Patterns of Climate increased drought Changing Patterns of Climate increased drought
Testing cardinal field of gaze Testing cardinal field of gaze
Video: Polymerase chain reaction PCR - Animation

For a complete list of videos, visit our video library