Giancoli 5th Ed.

Hwk 10  (Due 11/4/22)        10 point hwk
Ch. 29 P. 1,2,3,7,9,10,13,23,25,32,33,55
       MiscQ. 1-9 (all)

Problems: 
1. emf = -N dI_B/dt = -N (Delta I_B/ Delta t)
       = -550 Wb
2. induced current is counterclockwise
3. emf_avg = -(Delta I_B/ Delta t) = 0.16 V
7. induced current is counterclockwise
9. a) by Lenz's law, the induced current is clockwise
   b) |emf_avg| = B(Delta A)/(Delta t) = emf_avg = 3.4e-2 V
   c) I_avg = emf/R = 1.4e-2 A
10. F = IlB = (emf/R)lB = (Blv/R)lB = B^2l^2v/R = 0.704 N
13. a) emf = -N(dI_B/dt) = (-7.2+1.1t^2)V
    b) emf(t=1s) = -6.1 V
       emf(t=4s) = 11V
23. v = emf/Bl = 0.85 m/s
25. a) emf = Blv = 0.17 V
    b) I = emf/R = 6.3mA
    c) F = IlB = 6.7e-4 N to the right
32. emf_peak = NBwA so N=emf_peak/BwA = 63.2 loops
33. emf_1/w_1 = emf_2/w_2
    So emf_2 = emf_1(w_2/w_1) = 26.2 V
55. E = -r/2 (dB/dt)  and F=qE
    so F = -q(r/2)(dB/dt) = 5.0e-9 N

MiscQ.
1. b,d
2. c
3. d
4. c,b
5. c
6. c
7. b
8. b
9. c


Please check   Tot= 10 pts
Prob.  10,13  (1pt,2pts)
MiscQ. 6-9   (0.5 pt each)