COSMIC PERSPECTIVE LL FD
9th Edition
ISBN: 9780135877074
Author: Bennett
Publisher: PEARSON
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Chapter 15, Problem 50EAP
To determine
To discuss: The effectsbetween birth of a star to 13 billion years of age.
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Part A
You want to get an idea of the magnitude of magnetic fields produced by overhead power lines. You
estimate that a transmission wire is about 12 m above the ground. The local power company tells you that
the line operates at 12 kV and provide a maximum of 60 MW to the local area.
Estimate the maximum magnetic field you might experience walking under such a power line, and compare to the Earth's field. [For an ac current, values are rms, and the magnetic field will be changing.]
Express your answer using two significant figures.
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Part B
Compare to the Earth's field of 5.0 x 10-5 T.
Express your answer using two significant figures.
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the elevator's floor exert on a 52-kg passenger?
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Starting from rest and undergoing constant acceleration, a 940-kg
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Chapter 15 Solutions
COSMIC PERSPECTIVE LL FD
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