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

Author Question: Very large capacitors have been considered as a means for storing electrical energy. If we ... (Read 19 times)

dejastew

  • Hero Member
  • *****
  • Posts: 562
on: Jul 28, 2018
Very large capacitors have been considered as a means for storing electrical energy. If we constructed a very large parallel-plate capacitor of plate area 10 m2 using paper (k = 3.7) of thickness 1.0 mm as a dielectric, how much electrical energy would it store at a plate voltage of 5000 V? (e0 = 8.85  10-12 C2/Nm2)
 a. 4.1 J
  c. 0.41 J
  b. 8200 J
  d. 82,000 J

Question 2

Starting from rest, a wheel undergoes constant angular acceleration for a period of time T. At what time after the start of rotation does the wheel reach an angular speed equal to its average angular speed for this interval?
 a. 0.25T
  c. 0.67T
  b. 0.50T
  d. 0.71T


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

31809pancho

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

B


dejastew

  • Member
  • Posts: 562
Reply 2 on: Jul 28, 2018
Gracias!

okolip

  • Member
  • Posts: 362
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
Energy budget for a temperate deciduous forest (data from Gosz et al. 1978). Energy budget for a temperate deciduous forest (data from Gosz et al. 1978).
Micro Electrical Mechanical System (MEMS) microchip Micro Electrical Mechanical System (MEMS) microchip
Energy in SHM Energy in SHM
Temperature Means and Ranges Temperature Means and Ranges
China has relied on cheap coal to meet its demand for energy China has relied on cheap coal to meet its demand for energy
Video: Virtual Enzyme Kinetics & Lineweaver Burk Plot

For a complete list of videos, visit our video library