A 20-mF capacitor charged to 2.0 kV and a 40-mF capacitor charged to 3.0 kV are connected to each other, with the positive plate of each connected to the negative plate of the other. What is the final charge on the 20-mF capacitor after the two are so connected?

a. 53 mC
b. 27 mC
c. 40 mC
d. 80 mC
e. 39 mC


B

Physics & Space Science

You might also like to view...

If the intensity level of one trombone is 70 dB and that of one cornet is 65 dB, which is louder: 76 trombones or 110 cornets?

What will be an ideal response?

Physics & Space Science

The electron microscope's main advantage over the optical microscope is which of the following?

a. greater ease of portability b. dispenses with need for a lens c. higher power lens used d. higher resolution possible

Physics & Space Science

Which of the following is not a good reason to place an observatory on a remote mountain to?

A) reduce the impact of light pollution B) reduce the twinkling caused by Earth's atmosphere C) allow study of infrared light D) allow observations at ultraviolet and x-ray wavelengths

Physics & Space Science

Which of the following describes the shape of dust particles, based on polarization of light?

A) diamonds B) cubes C) spheres D) disks E) rodlike

Physics & Space Science