« 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 44 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?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Field experiment on effects of predation on male guppy colouration Field experiment on effects of predation on male guppy colouration
Some Hall-effect sensors look like magnetic sensors. This Hall-effect camshaft reference sensor and ... Some Hall-effect sensors look like magnetic sensors. This Hall-effect camshaft reference sensor and ...
Canada’s Arctic is changing dramatically Canada’s Arctic is changing dramatically
Client’s view with visual field loss Client’s view with visual field loss
Anti-GM protesters attacking a field of genetically-modified maize in southwestern France Anti-GM protesters attacking a field of genetically-modified maize in southwestern France
RNA-induced transcriptional silencing (RITS) in yeast RNA-induced transcriptional silencing (RITS) in yeast
Video: Polymerase chain reaction PCR - Animation

For a complete list of videos, visit our video library