PHYS 102
Problems - Chapters 18 and 21 Set 10
Feb. 9, 2010
Chapter 18
43.
An ac voltage, whose peak value is 180 V, is across a 330- resistor. What are the rms
and peak currents in the resistor?
Find the peak current from Ohms law, and then find the rms c
Homework Set 6: Solutions
Due: Friday, October 8, 2010
Chapter 21: Questions
(4) 8 points
Two loops of wire are moving in the vicinity of a very long straight wire carrying a steady
current as shown in Fig. 21-43. Find the direction of the induced current
Chapter 10
Rotation
10.1
Section A
1. What is the angular speed of a point on Earths surface at latitude 40
N? What is the linear speed of the point?
Ans. 7.3 105 rad/s, 3.5 102 m/s
2. A centrifuge rotor is accelerated from rest to 20,000 rpm in 5.0 min.
Exam I PHYS 2426
Name
SHORT ANSWER. Solve the problem. K
I
0 Hz. 1 1)
1) An unngered guitar string is 0.731.11 long and is tuned to play a note of 3
a How far from the end of the string must you place your finger to play a note of 440 ? (3
. points)
9) Wh
Natale: Mink 5&1 2 It #fz (feed-tech m u
Qfancc/L : CHLt.
35. (II) In the capacitance bridge shown in Fig. 2424, a voltage
V0 is applied and the variable capacitorCl is adjusted until
there is zero voltage between points a and b as measured on
the voltmet