ESSENTIAL COSMIC PERSPECTIVE BUNDLE
8th Edition
ISBN: 9780137438013
Author: Bennett
Publisher: PEARSON
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Chapter 7, Problem 58EAP
To determine
Whether the colonization of Mars is a good idea or not?
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(a) A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 24.5° with the horizontal. A 30.0-kg piece of luggage is placed on the carousel, 7.46 m from
the axis of rotation. The travel bag goes around once in 37.5 s. Calculate the magnitude of the force of static friction between the bag and the carousel.
N
(b) The drive motor is shifted to turn the carousel at a higher constant rate of rotation, and the piece of luggage is bumped to a position 7.94 m from the axis of rotation. The bag is on the verge of slipping as it goes around once every 30.5 s. Calculate the coefficient of static friction
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Shown below is a waterslide constructed in the late 1800's. This slide was unique for its time due to the fact that a large number of small wheels along its length made friction negligible. Riders rode a small sled down the chute which ended with a horizontal section that caused the sled and
rider to skim across the water much like a flat pebble. The chute was 9.76 m high at the top and 54.3 m long. Consider a rider and sled with a combined mass of 81.0 kg. They are pushed off the top of the slide from point A with a speed of 2.90 m/s, and they skim horizontally across the
water a distance of 50 m before coming to rest.
9.76 m
Engraving from Scientific American, July 1888
A
(a)
20.0 m
-54.3 m
50.0 m
(b)
(a) Find the speed (in m/s) of the sled and rider at point C.
m/s
(b) Model the force of water friction as a constant retarding force acting on a particle. Find the magnitude (in N) of the friction force the water exerts on the sled.
N
(c) Find the magnitude (in N) of the force the…
You have an internship working at a company that designs and produces washing and drying equipment. Your supervisor is in the process of designing a new, very large dryer to be used in commercial establishments with intense laundry needs, such as restaurants (tablecloths, napkins)
and hotels (sheets, towels). In a dryer, a cylindrical tub containing wet material is rotated steadily about a horizontal axis as shown in the figure below.
0
So that the material will dry uniformly, it is made to tumble. The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth will lose contact with the tub when the cloth is at an angle of 0 = 71.0° above the horizontal. Your supervisor's tub is designed to have a radius
of r = 1.23 m and she asks you to determine the appropriate rate of revolution. (Give your answer in rev/min.)
rev/min
Chapter 7 Solutions
ESSENTIAL COSMIC PERSPECTIVE BUNDLE
Ch. 7 - Prob. 1VSCCh. 7 - Prob. 2VSCCh. 7 - Prob. 3VSCCh. 7 - Prob. 4VSCCh. 7 - Prob. 1EAPCh. 7 - Prob. 2EAPCh. 7 - Prob. 3EAPCh. 7 - Prob. 4EAPCh. 7 - Prob. 5EAPCh. 7 - Prob. 6EAP
Ch. 7 - Prob. 7EAPCh. 7 - Prob. 8EAPCh. 7 - Prob. 9EAPCh. 7 - Prob. 10EAPCh. 7 - Prob. 11EAPCh. 7 - Prob. 12EAPCh. 7 - Prob. 13EAPCh. 7 - Prob. 14EAPCh. 7 - Prob. 15EAPCh. 7 - What is the carbon dioxide cycle, and why is it so...Ch. 7 - Prob. 17EAPCh. 7 - Prob. 18EAPCh. 7 - Prob. 19EAPCh. 7 - Prob. 20EAPCh. 7 - Prob. 21EAPCh. 7 - A new orbital photograph of Mars shows a crater...Ch. 7 - Clear-cutting in the Amazon rain forest on Earth...Ch. 7 - Drilling into the Martian surface, a robotic...Ch. 7 - Prob. 25EAPCh. 7 - Prob. 26EAPCh. 7 - Prob. 27EAPCh. 7 - Prob. 28EAPCh. 7 - Prob. 29EAPCh. 7 - Prob. 30EAPCh. 7 - Prob. 31EAPCh. 7 - Which describes our understanding of flowing water...Ch. 7 - Prob. 33EAPCh. 7 - Prob. 34EAPCh. 7 - Prob. 35EAPCh. 7 - Prob. 36EAPCh. 7 - Prob. 37EAPCh. 7 - Prob. 38EAPCh. 7 - Prob. 39EAPCh. 7 - Prob. 40EAPCh. 7 - Unanswered Questions. Choose one important but...Ch. 7 - Prob. 42EAPCh. 7 - Miniature Mars. Suppose Mars had turned out to be...Ch. 7 - Two Paths Diverged. Briefly explain how the...Ch. 7 - Change in Formation Properties. Consider either...Ch. 7 - Experiment: Planetary Cooling in a Freezer. Fill...Ch. 7 - Prob. 47EAPCh. 7 - Prob. 48EAPCh. 7 - Prob. 49EAPCh. 7 - Prob. 50EAPCh. 7 - Prob. 51EAPCh. 7 - Prob. 52EAPCh. 7 - Prob. 53EAPCh. 7 - Prob. 54EAPCh. 7 - Prob. 55EAPCh. 7 - Prob. 56EAPCh. 7 - Prob. 57EAPCh. 7 - Prob. 58EAP
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