Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Question
Chapter 21, Problem 15Q
To determine
The reason due to which neutron stars repel each other through strong nuclear force when they are close to each other. Also explain the effect on the maximum mass of a neutron star, if the repulsive force is made stronger.
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Test 2
МК
02
5. (a) When rebuilding her car's engine, a physics major must exert 300 N of force to insert a dry
= 0.03 (15 pts)
piston into a steel cylinder. What is the normal force between the piston and cylinder?
What force would she have to exert if the steel parts were oiled? Mk
Giren
F = 306N
MK-0.3
UK = 0.03
NF = ?
2. A powerful motorcycle can produce an acceleration of 3.50 m/s² while traveling at 90.0 km/h. At that
speed the forces resisting motion, including friction and air resistance, total 400 N. (Air resistance is
analogous to air friction. It always opposes the motion of an object.) What force does the motorcycle
exert backward on the ground to produce its acceleration if the mass of the motorcycle with rider is 245
ke?
a = 350 m/s 2
2. A powerful motorcycle can produce an acceleration of 3.50 m/s² while traveling at 90.0 km/h. At that
speed the forces resisting motion, including friction and air resistance, total 400 N. (Air resistance is
analogous to air friction. It always opposes the motion of an object.) What force does the motorcycle
exert backward on the ground to produce its acceleration if the mass of the motorcycle with rider is 245
kg? (10 pts)
a = 3.50 m/s 2
distance 90 km/h
=
3.50m/62
M =
245g
Chapter 21 Solutions
Universe
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