Essential University Physics
4th Edition
ISBN: 9780134988559
Author: Wolfson, Richard
Publisher: Pearson Education,
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Chapter 13.1, Problem 13.1GI
A typical human heart rate is about 65 beats per minute. The corresponding period and frequency are (a) period just over 1 s and frequency just under 1 Hz; (b) period just under 1 s and frequency just under 1 Hz; (c) period just under 1 s and frequency just over 1 Hz; or(d) period just over 1 minute and frequency of 70 Hz.
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Two mirrors meet an angle, a, of 105°. A ray of light is incident upon mirror A at an angle, i, of
42°. The ray of light reflects off mirror B and then enters water, as shown below:
Incident
ray at A
Note: This diagram is not to
scale.
a
Air (n = 1.00)
Water (n = 1.34)
1) Determine the angle of refraction of the ray of light in the water.
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Chapter 13 Solutions
Essential University Physics
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