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

Author Question: A parallel-plate capacitor has a capacitance of 10 mF and charged with a 20 V power supply. The ... (Read 69 times)

student77

  • Hero Member
  • *****
  • Posts: 567
A parallel-plate capacitor has a capacitance of 10 mF and charged with a 20 V power supply. The power supply is then removed and a dielectric of dielectric constant 4 is used to fill the space between the plates.
 
  The energy now stored by the capacitor is A)
 
  250 mJ.
  B)
 
  125 mJ.
  C)
 
  500 mJ.
  D)
 
  zero.
  E)
 
  62.5 mJ.

Question 2

The angular velocity of a wheel is given by (t) = (2.00 rad/s2)t + (1.00 rad/s4)t3.
 
  (a) What is the angular displacement of the wheel from time t = 0.00 s to time t = T?
  (b) What is the angular acceleration of the wheel as a function of time?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akemokai

  • Sr. Member
  • ****
  • Posts: 347
Answer to Question 1

C

Answer to Question 2

(a) (1.00 rad/s2 )T2 + (0.250 rad/s4 )T4
(b) (2.00 rad/s2 ) + (3.00 rad/s4 )t2




student77

  • Member
  • Posts: 567
Reply 2 on: Jul 29, 2018
Gracias!


meow1234

  • Member
  • Posts: 333
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

For a complete list of videos, visit our video library