Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 13, Problem 73P
To determine
The speed of baseball at which the transition occurs and the effect of transition.
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During a high Reynolds number experiment, the total drag force acting on a spherical body of diameter \{D=\) 17 cm subjected to airflow at 1 atm and 5°C is measured to be 5.4 N. The pressure drag acting on the body is calculated by integrating the pressure distribution (measured by the use of pressure sensors throughout the surface) to be 2.2 N. Determine the friction drag coefficient of the sphere.
A simplified model consisting of a single straight line is to be obtained for the variation of pressure inside the 10-mm-diameter barrel of a rifle as a 20-g bullet is fired. Knowing that it takes 1.6 ms for the bullet to travel the length of the barrel and that the velocity of the bullet upon exit is 700 m/s, determine the value of p0.
In a car service station, the air exerts a force on a small piston of radius r = 5 cm. The change in pressure is transmitted by an incompressible liquid, of unknown relative density, to a second piston of radius R = 15 cm. What force must compressed air exert on the small piston in order to lift a car that weighs 15,000 N? Consider the weight of both pistons negligible.
A) 1 666.67 N
B) 135 000 N
C) 5 000 N
D) 45 000 N
Chapter 13 Solutions
Physics for Scientists and Engineers
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