(II) A power line carrying a sinusoidally varying current with frequency f = 60 Hz and peak value I 0 = 55 kA runs at a height of 7.0 m across a farmer’s land (Fig. 29–41). The farmer constructs a vertically oriented 2.0-m-high 10-turn rectangular wire coil below the power line. The farmer hopes to use the induced voltage in this coil to power 120-Volt electrical equipment, which requires a sinusoidally varying voltage with frequency f = 60 Hz and peak value V 0 = 170 V. What should the length ℓ of the coil be? Would this be unethical? FIGURE 29–41 Problem 16.
(II) A power line carrying a sinusoidally varying current with frequency f = 60 Hz and peak value I 0 = 55 kA runs at a height of 7.0 m across a farmer’s land (Fig. 29–41). The farmer constructs a vertically oriented 2.0-m-high 10-turn rectangular wire coil below the power line. The farmer hopes to use the induced voltage in this coil to power 120-Volt electrical equipment, which requires a sinusoidally varying voltage with frequency f = 60 Hz and peak value V 0 = 170 V. What should the length ℓ of the coil be? Would this be unethical? FIGURE 29–41 Problem 16.
(II) A power line carrying a sinusoidally varying current with frequency f = 60 Hz and peak value I0 = 55 kA runs at a height of 7.0 m across a farmer’s land (Fig. 29–41). The farmer constructs a vertically oriented 2.0-m-high 10-turn rectangular wire coil below the power line. The farmer hopes to use the induced voltage in this coil to power 120-Volt electrical equipment, which requires a sinusoidally varying voltage with frequency f = 60 Hz and peak value V0 = 170 V. What should the length ℓ of the coil be? Would this be unethical?
Certain types of particle detectors can be used to reconstruct the tracks left by unstable, fast-moving sub-atomic particles. Assume
that a track with a length of L=2.97 mm in the laboratory frame of reference has been observed. Further assume that you
determined from other detector data that the particle moved at a speed of L=0.910 ⚫ c, also in the laboratory frame of reference. c
denotes the speed of light in vacuum. What proper lifetime would you determine for this particle from the data given?
T= 4.0
S
generated worksheet
While cruising down University Boulevard you are stopped by a cop who states that you ran a red traffic light. Because you don't
want to pay the stiff fine, you are attempting a physics defense. You claim that due to the relativistic Doppler effect, the red color of
the light λ=616 nm appeared green '=531 nm to you. The cop makes a quick calculation of his own and rejects your defense.
How fast, in terms of your speed u divided by the speed of light in vacuum c, would you have to drive to justify your claim? Note
that the speed u is taken to be a positive quantity.
U 4.0
C
Chapter 29 Solutions
Physics for Scientists and Engineers with Modern Physics
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