{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

p2f07_finalA_14dec07

# p2f07_finalA_14dec07 - PHYS-1200 PHYSICS II FINAL A NAME...

This preview shows pages 1–4. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
PHYS-1200 PHYSICS II NAME____________________ FINAL - A Dec. 14, 2007 A. Multiple choice (4 pts each) ____A1) Electric charges A and B are attracted to each other. Electric charges B and C are also attracted to each other. If A and C are held close to one another, they will A) attract B) repel C) not affect one another D) more information is needed to answer _____A2) Two identical point charges q are 0.1 m apart. The force between them is 1 N. Which value is closest to the magnitude of q? A) 1.11x10 11 C B) 0.95x10 5 C C) 1.05x10 -6 C D) 3.3x10 -11 C E) There is not enough information given. ____3) A speaker emitting sound at 400 Hz and 100 W is measured to have a sound level of 80 dB when measured at a distance of R . What is the sound level at the same location if the speaker power is decreased by a factor of 10, to 10 W? A) 1/4 R 2 B) 10 dB C) 81 dB D) 79 dB E) 70 dB ____4) A positive charge Q is placed on a hollow conducting sphere of inner radius R 1 and outer radius R 2 . A particle with charge q is placed at the center of the cavity in the sphere, as shown in the sketch. The magnitude of the electric field inside the cavity, at a distance r from the center ( r < R 1 ) is: A. zero B. 2 1 0 4 R Q πε C. 2 0 4 r q D. 2 0 4 ) ( r Q q + E. ) ( 4 ) ( 2 2 1 0 r R Q q - + page 2 of 14
PHYS-1200 PHYSICS II NAME____________________ FINAL - A Dec. 14, 2007 ____5) A battery is used to charge a series combination of two identical capacitors. If the potential difference between the terminals of the battery is V , and total charge Q flows through the battery during the charging process, then the charge on the positive plate of each capacitor, and the potential difference across each capacitor

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 14

p2f07_finalA_14dec07 - PHYS-1200 PHYSICS II FINAL A NAME...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online