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

Author Question: The figure shows a steady electric current passing through a wire with a narrow region. What happens ... (Read 62 times)

future617RT

  • Hero Member
  • *****
  • Posts: 543
on: Jul 29, 2018
The figure shows a steady electric current passing through a wire with a narrow region. What happens to the drift velocity of the moving charges as they go from region A to region B and then to region C?
 
  A) The drift velocity decreases from A to B and increases from B to C.
  B) The drift velocity increases all the time.
  C) The drift velocity remains constant.
  D) The drift velocity decreases all the time.
  E) The drift velocity increases from A to B and decreases from B to C.

Question 2

An air-filled capacitor stores a potential energy of due to its charge. It is accidentally filled with water in such a way as not to discharge its plates. How much energy does it continue to store after it is filled?
 
  (The dielectric constant for water is 78 and for air it is 1.0006.)
  A) 0.077 mJ
  B) 468 mJ
  C) 0.040 mJ
  D) 6.00 mJ


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ryansturges

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: E

Answer to Question 2

Answer: A


future617RT

  • Member
  • Posts: 543
Reply 2 on: Jul 29, 2018
Wow, this really help

blakcmamba

  • Member
  • Posts: 335
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

An H II Region An H II Region
Meta-analysis of 18 studies shows that aerobic exercise causes better performance in older adults on Meta-analysis of 18 studies shows that aerobic exercise causes better performance in older adults on
The graph shows the effect of sonic tuning of the intake manifold runners. The longer runners ... The graph shows the effect of sonic tuning of the intake manifold runners. The longer runners ...
To reverse the direction of operation, the polarity of the current through the motor is reversed. To reverse the direction of operation, the polarity of the current through the motor is reversed.
The first step in the reprogramming procedure is to determine the current software installed using a ... The first step in the reprogramming procedure is to determine the current software installed using a ...
One pathway of primary succession in Alaska’s Glacier Bay region. One pathway of primary succession in Alaska’s Glacier Bay region.
Video: Protein Structure - Primary, Secondary, Tertiary and Quaternary

For a complete list of videos, visit our video library