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

Author Question: A capacitor is attached across a battery and charged. Then the battery is removed leaving the ... (Read 58 times)

dejastew

  • Hero Member
  • *****
  • Posts: 562
on: Jul 28, 2018
A capacitor is attached across a battery and charged. Then the battery is removed leaving the capacitor charged. The positive lead of the capacitor is then connected to one lead of a previously uncharged identical capacitor, and then the other lead of the charged capacitor is connected to the other lead of the second capacitor. How does the energy E0 stored in the originally charged capacitor compare to the energy Ef stored in the connected capacitors?
 a. E0 = 2Ef
  c. E0 = 4Ef
  b. E0 < Ef
  d. E0 = Ef

Question 2

A rod of length L is pivoted about its left end and has a force F applied perpendicular to the other end. The force F is now removed and another force F is applied at the midpoint of the rod. If F is at an angle of 30o with respect to the rod, what is its magnitude if the resulting torque is the same as when F was applied?
 a. F
  c. 3F
  b. 2F
  d. 4F


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

maaaaaaaaaa

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

D


dejastew

  • Member
  • Posts: 562
Reply 2 on: Jul 28, 2018
:D TYSM

tanna.moeller

  • Member
  • Posts: 328
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Appendectomy. The appendix and cecum are brought through the incision to the surface of the abdomen. Appendectomy. The appendix and cecum are brought through the incision to the surface of the abdomen.
With all vacuum lines and the intake tube removed, the valve cover can be removed after removing all ... With all vacuum lines and the intake tube removed, the valve cover can be removed after removing all ...
This battery cable was found corroded underneath. The corrosion had eaten through the insulation yet ... This battery cable was found corroded underneath. The corrosion had eaten through the insulation yet ...
Denture sore mouth in a patient who never removed partial dentures at night. Denture sore mouth in a patient who never removed partial dentures at night.
In the figure, a 10.0-m long bar is attached by a frictionless hinge to a wall and held ... In the figure, a 10.0-m long bar is attached by a frictionless hinge to a wall and held ...
I need help soon some questions attached I need help soon some questions attached
Video: Digestive chemicals - types & enzymes

For a complete list of videos, visit our video library