Physics
7th Edition
ISBN: 9780321929013
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 33, Problem 1OQ
To determine
The cause of slowing down of universe expansion.
Expert Solution & Answer
Answer to Problem 1OQ
Solution:
The gravity is the factor which was assumed to be the cause of the slowing down of the expansion of the universe in earlier days. Therefore, option c is correct.
Explanation of Solution
Option a is wrong since, there is no frictional force present.
The second law of
Due to the gravity or gravitational force, the process of expansion may slow down due to the gravitational attraction between objects. So, option c is correct.
The
Conclusion:
Option c is correct.
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Students have asked these similar questions
6. A car drives at steady speed around a perfectly
circular track.
(a) The car's acceleration is zero.
(b) The net force on the car is zero.
(c) Both the acceleration and net force on the car
point outward.
(d) Both the acceleration and net force on the car
point inward.
(e) If there is no friction, the acceleration is
outward.
9. A spring has a force constant of 100 N/m and an
unstretched length of 0.07 m. One end is attached to
a post that is free to rotate in the center of a smooth.
table, as shown in the top view in the figure below.
The other end is attached to a 1kg disc moving in
uniform circular motion on the table, which
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What is the centripetal force on the disc?
Top View
(a)
0.3 N
(b)
3.0 N
(c)
10 N
(d)
300 N
(e)
1000 N
4. A child has a ball on the end of a cord, and whirls
the ball in a vertical circle. Assuming the speed of
the ball is constant (an approximation), when would
the tension in the cord be greatest?
(a) At the top of the circle.
(b) At the bottom of the circle.
(c) A little after the bottom of the circle when the
ball is climbing.
(d) A little before the bottom of the circle when the
ball is descending quickly.
(e) Nowhere; the cord is pulled the same amount at
all points.
Chapter 33 Solutions
Physics
Ch. 33 - Prob. 1OQCh. 33 - Prob. 2OQCh. 33 - Prob. 1QCh. 33 - Prob. 2QCh. 33 - Prob. 3QCh. 33 - Prob. 4QCh. 33 - Prob. 5QCh. 33 - Prob. 6QCh. 33 - Prob. 7QCh. 33 - Prob. 8Q
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