Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
4th Edition
ISBN: 9780357097755
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 47, Problem 6RQ
When used as a photovoltaic device, how much voltage is generally produced by a photodiode?
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The shelf bracket is subjected to the force F = 372 Newtons
at an angle = 21.4°. Compute the moment (in N-m) that
this force exerts about each of the two attachment points
(screw locations in the figure). Take counterclockwise
moments to be positive.
a
duk
F
-0
2013 cc
Michael Swanbom
BY NC
O
SA
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
a
43.0 cm
b
32.3 cm
с
2.58 cm
The moment about the upper attachment point is
N-m.
The moment about the lower attachment point is
N-m.
A man skis down a slope. His initial elevation was 150 m and his velocity at the bottom of the slope is 17 m/s. What percentage of his initial potential energy was consumed due to friction and air resistance? Use the accounting equation in your calculations.
In direct calorimetry, a person is placed in a large, water-insulated chamber. The chamber is kept at a constant temperature. While in the chamber, the subject is asked to perform a number of normal activities, such as eating, sleeping, and exercising. The rate of heat released from the subject’s body can be measured by the rate of heat gain by the water bath. Would direct calorimetry be a practical way to measure metabolic rate? Why or why not?A person is placed inside a calorimetric chamber for 24 hours. During this time, the 660-gallon water bath heats up by 3.2°F. What is the subject’s metabolic rate during this period? Report your answer in kcal/day. Assume that there is no heat loss from the water to the surroundings.
Chapter 47 Solutions
Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
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