« 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 143 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?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

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.

Earth’s Magnetic Field Earth’s Magnetic Field
Dendritic Spines in Field CA1 Dendritic Spines in Field CA1
Wheat field versus lavender field Wheat field versus lavender field
Changing a Sterile Dressing Changing a Sterile Dressing
Risk Factors for NSAID-Induced Gastrointestinal Ulcers Risk Factors for NSAID-Induced Gastrointestinal Ulcers
What is the contribution of studying wing spot in the field? What is the contribution of studying wing spot in the field?
Video: Bone Healing Animation

For a complete list of videos, visit our video library