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

Author Question: A horizontal metal bar that is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about ... (Read 94 times)

CQXA

  • Hero Member
  • *****
  • Posts: 546
on: Jul 27, 2018
A horizontal metal bar that is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about a vertical axis through one of its ends while in a constant magnetic field of 5  10-5 T.
 
  If the magnetic field vector points straight down, what emf is induced between the two ends of the bar?
  A) 1.6  10-4 V
  B) 5.6  10-3 V
  C) 2.0  10-4 V
  D) 7.0  10-4 V
  E) 3.6  10-3 V

Question 2

The focal length of a concave mirror is 20 cm. What is its radius of curvature?
 
  A) 10 cm
  B) 40 cm
  C) -40 cm
  D) 20 cm
  E) -20 cm


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

komodo7

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

B


CQXA

  • Member
  • Posts: 546
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

xiazhe

  • Member
  • Posts: 331
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Long-day stimulation of flower development in Arabidopsis. Long-day stimulation of flower development in Arabidopsis.
Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu
Use palms and fingers to brush off along the back of the body from shoulders to feet with long ... Use palms and fingers to brush off along the back of the body from shoulders to feet with long ...
Position of cupula with head in still position (left) and when head rotates (right) Position of cupula with head in still position (left) and when head rotates (right)
Converting the universal gas constant Converting the universal gas constant
The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ... The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ...
Video: Digestive chemicals - types & enzymes

For a complete list of videos, visit our video library