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Get Full Access to Calculus - 8 Edition - Chapter 6 - Problem 5
Get Full Access to Calculus - 8 Edition - Chapter 6 - Problem 5

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# (a) Show that the volume of a segment of height h of a

ISBN: 9781285740621 127

## Solution for problem 5 Chapter 6

Calculus | 8th Edition

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Problem 5

(a) Show that the volume of a segment of height h of a sphere of radius r is V 1 3h2 s3r 2 hd (See the figure.) (b) Show that if a sphere of radius 1 is sliced by a plane at a distance x from the center in such a way that the volume of one segment is twice the volume of the other, then x is a solution of the equation 3x 3 2 9x 1 2 0 where 0 , x , 1. Use Newtons method to find x accurate to four decimal places. (c) Using the formula for the volume of a segment of a sphere, it can be shown that the depth x to which a floating sphere of radius r sinks in water is a root of the equation x 3 2 3rx 2 1 4r 3 s 0 where s is the specific gravity of the sphere. Suppose a wooden sphere of radius 0.5 m has specific gravity 0.75. Calculate, to four-decimal-place accuracy, the depth to which the sphere will sink. (d) A hemispherical bowl has radius 5 inches and water is running into the bowl at the rate of 0.2 in3 ys. (i) How fast is the water level in the bowl rising at the instant the water is 3 inches deep? (ii) At a certain instant, the water is 4 inches deep. How long will it take to fill the bowl?

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