UNDERSTANDING THE UNIVERSE(LL)-W/CODE
3rd Edition
ISBN: 9780393869903
Author: PALEN
Publisher: NORTON
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Chapter 2, Problem 8QAP
To determine
The phase of the moon.
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Suppose there are two transformers between your house and the high-voltage transmission line
that distributes the power. In addition, assume your house is the only one using electric power. At
a substation the primary of a step-down transformer (turns ratio = 1:23) receives the voltage
from the high-voltage transmission line. Because of your usage, a current of 51.1 mA exists in the
primary of the transformer. The secondary is connected to the primary of another step-down
transformer (turns ratio = 1:36) somewhere near your house, perhaps up on a telephone pole.
The secondary of this transformer delivers a 240-V emf to your house. How much power is your
house using? Remember that the current and voltage given in this problem are rms values.
The human eye is most sensitive to light having a frequency of about 5.5 × 1014 Hz, which is in the
yellow-green region of the electromagnetic spectrum. How many wavelengths of this light can fit
across a distance of 2.2 cm?
A one-dimensional harmonic oscillator of mass m and angular frequency w is in a heat bath of temperature T. What is the root mean square of
the displacement of the oscillator? (In the expressions below k is the Boltzmann constant.)
Select one:
○ (KT/mw²)1/2
○ (KT/mw²)-1/2
○ kT/w
O (KT/mw²) 1/2In(2)
Chapter 2 Solutions
UNDERSTANDING THE UNIVERSE(LL)-W/CODE
Ch. 2.1 - Prob. 2.1CYUCh. 2.2 - Prob. 2.2CYUCh. 2.3 - Prob. 2.3CYUCh. 2.4 - Prob. 2.4CYUCh. 2 - Prob. 1QAPCh. 2 - Prob. 2QAPCh. 2 - Prob. 3QAPCh. 2 - Prob. 4QAPCh. 2 - Prob. 5QAPCh. 2 - Prob. 6QAP
Ch. 2 - Prob. 7QAPCh. 2 - Prob. 8QAPCh. 2 - Prob. 9QAPCh. 2 - Prob. 10QAPCh. 2 - Prob. 11QAPCh. 2 - Prob. 12QAPCh. 2 - Prob. 13QAPCh. 2 - Prob. 14QAPCh. 2 - Prob. 15QAPCh. 2 - Prob. 16QAPCh. 2 - Prob. 17QAPCh. 2 - Prob. 18QAPCh. 2 - Prob. 19QAPCh. 2 - Prob. 20QAPCh. 2 - Prob. 21QAPCh. 2 - Prob. 22QAPCh. 2 - Prob. 23QAPCh. 2 - Prob. 24QAPCh. 2 - Prob. 25QAPCh. 2 - Prob. 26QAPCh. 2 - Prob. 27QAPCh. 2 - Prob. 28QAPCh. 2 - Prob. 29QAPCh. 2 - Prob. 30QAPCh. 2 - Prob. 31QAPCh. 2 - Prob. 32QAPCh. 2 - Prob. 33QAPCh. 2 - Prob. 34QAPCh. 2 - Prob. 35QAPCh. 2 - Prob. 36QAPCh. 2 - Prob. 37QAPCh. 2 - Prob. 38QAPCh. 2 - Prob. 39QAPCh. 2 - Prob. 40QAPCh. 2 - Prob. 41QAPCh. 2 - Prob. 43QAPCh. 2 - Prob. 44QAPCh. 2 - Prob. 45QAP
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