This topic contains a solution. Click here to go to the answer

Author Question: The energy stored in a coil of self-inductance, L, and traversed by current I, is E1. A second coil ... (Read 84 times)

j.rubin

  • Hero Member
  • *****
  • Posts: 557
The energy stored in a coil of self-inductance, L, and traversed by current I, is E1. A second coil is made with the same length of wire, but its radius is twice the radius of the first coil and it is twice as long as the first coil.
 
  If the second coil also has twice the current of the first coil, how does the energy stored in the first coil, E1, compare to the energy stored in the second coil, E2? A) E1 = E2
  B) E1 = E2/8
  C) E1 = 4E2
  D) E1 = E2/2
  E) E1 = E2/4

Question 2

A person pushes horizontally on a heavy box and slides it across the level floor at constant velocity. The person pushes with a 60.0 N force for the first 6.88 m, at which time he begins to tire.
 
  The force he exerts then starts to decrease linearly from 60.0 N to 0.00 N across the remaining 6.88 m. How much total work did the person do on the box? A) 619 J
  B) 826 J
  C) 495 J
  D) 925 J



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

TheNamesImani

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

B

Answer to Question 2

A




j.rubin

  • Member
  • Posts: 557
Reply 2 on: Jul 29, 2018
Excellent


xoxo123

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

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.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

For a complete list of videos, visit our video library