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7. A small object carrying a charge of 3.47 µC experiences an electric force of
7.22 × 10–2 N when placed at a distance, d, from a second, identically charged
object. The value of d is __________ m.
(Record your threedigit answer in the numericalresponse section on the answer sheet.) Numerical Response
8. The number of excess electrons on a ball that has a charge of –3.60 × 10–17 C,
expressed in scientific notation, is a.bc × 10d. The values of a, b, c, and d
are _____ , _____ , _____ , and _____ .
(Record all four digits of your answer in the numericalresponse section on the answer sheet.) 18. An electron accelerates from rest across the gap between charged parallel plates
and reaches a final speed of v. If the potential difference across the plates is
tripled, the final speed of an electron accelerating from rest across the gap will be
A.
B.
C.
D. 19. 1v
3
1v
3
3v
9v Xrays are produced by
A.
B.
C.
D. an alternating current of about 1018 Hz
firing gamma rays at a tungsten electrode
varying the speed of electrons in a magnetic field
collisions between highspeed electrons and a metal target 12 Use the following information to answer the next question.
In 1996, the space shuttle Columbia attempted to drag a conducting tether
through Earth’s magnetic field. The tether was 2.07 × 104 m long. The
average magnitude of Earth’s magnetic field perpendicular to the tether was
9.02 × 10–6 T. The speed of the shuttle and tether was 8.00 × 103 m/s, relative
to Earth’s magnetic field. Numerical Response
9. The electric potential difference generated across the ends of the tether,
expressed in scientific notation, was a.bc × 10d V. The values of a, b, c, and d
are _____ , _____ , _____ , and _____ .
(Record all four digits of your answer in the numericalresponse section on the answer sheet.) Use the following information to answer the next question.
Series Circuit
R
V
120 V 20. A In the circuit above, the voltmeter reads 90 V and the ammeter reads 1.5 A. The
value of the resistor, R, will be
A.
B.
C...
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This note was uploaded on 01/14/2014 for the course PHYSICS Physics 30 taught by Professor Quinlan during the Fall '09 term at Centennial High School.
 Fall '09
 Quinlan
 Physics

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