Exam 6: Applications of the Definite Integral in Geometry, Science and Engineering

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Find the arc length of the curve Find the arc length of the curve   from x = 0 to x = 3. from x = 0 to x = 3.

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The face of the dam shown in the figure is an inclined rectangle. If the dam is 60 feet wide, the face is 30 feet in length and θ\theta = 30°, find the fluid force on the face when the water (weight density 62.4 lbs/ft3) is level with the top of the dam.  The face of the dam shown in the figure is an inclined rectangle. If the dam is 60 feet wide, the face is 30 feet in length and  \theta = 30°, find the fluid force on the face when the water (weight density 62.4 lbs/ft<sup>3</sup>) is level with the top of the dam.

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Find the area of the surface generated when Find the area of the surface generated when   from x = 1 to x = 3 is rotated around the x-axis. from x = 1 to x = 3 is rotated around the x-axis.

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Find the arc length of the curve Find the arc length of the curve   from x = 1 to x = 2. from x = 1 to x = 2.

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Use cylindrical shells to find the volume of the solid that results when the area of the smaller region enclosed by y2 = 9x, y = 3, and x = 4 is revolved about the y-axis

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A right triangle is submerged vertically with one side parallel to the surface in a liquid of density ρ\rho . The triangle has a leg that is 16 m long located at the surface and a leg 16 m long straight down. Find the force exerted on the triangular surface, in terms of the density. Neglect the effect of the atmosphere above the liquid.  A right triangle is submerged vertically with one side parallel to the surface in a liquid of density \rho . The triangle has a leg that is 16 m long located at the surface and a leg 16 m long straight down. Find the force exerted on the triangular surface, in terms of the density. Neglect the effect of the atmosphere above the liquid.

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A conical tank has a diameter of 12 feet and is 30 feet deep. If the tank is filled with water of density 62.4lbs/ft3, how much work is required to pump the water over the top? A conical tank has a diameter of 12 feet and is 30 feet deep. If the tank is filled with water of density 62.4lbs/ft<sup>3</sup>, how much work is required to pump the water over the top?

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A force of A force of   lb is applied to an object as it moves from x = -1 ft to x = 2 ft. How much work is done? lb is applied to an object as it moves from x = -1 ft to x = 2 ft. How much work is done?

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Find the area of the region enclosed by Find the area of the region enclosed by   , the x axis, x = 3, and x = 6. , the x axis, x = 3, and x = 6.

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Find a vertical line x = k that divides the area enclosed by Find a vertical line x = k that divides the area enclosed by   , y = 0 and x = 5 into equal parts. Approximate area to three decimal places. , y = 0 and x = 5 into equal parts. Approximate area to three decimal places.

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The area of the surface generated by revolving the curve x = 3 cos t, y = 3 sin t, 0 \le t \le π\pi about the x-axis is

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Use the method of washers to find the volume of the solid that results when the area of the region enclosed by y = 16 -x2 and y = x + 4 is revolved about the x axis.

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Find the value of the solid that is obtained when the region under the curve y = x2 + 2x over the interval [1, 2] is revolved about the x-axis. Approximate area to three decimal places.

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Answer true or false. A 12 in diameter glass circular window on the side of a submarine has the same force acting on the top half as on the bottom half.

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A flat rectangular plate is submerged horizontally in water to a depth of 3.2 ft. If the top surface of the plate has an area of 50 ft2, and the liquid in which it is submerged is water, find the force on the top of the plate. Neglect the effect of the atmosphere above the liquid. (The density of water is 62.6 lb/ft3.)

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Answer true or false. The region enclosed by revolving the semicircle Answer true or false. The region enclosed by revolving the semicircle   about the x-axis is   . about the x-axis is Answer true or false. The region enclosed by revolving the semicircle   about the x-axis is   . .

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If the gravitational force is proportional to x-8, the work it does is proportional to

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Use cylindrical shells to find the volume of the solid when the region enclosed by y = x2, x = 1, x = 2, y = 0 is revolved about the y-axis.

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Find the work done when a variable force of F(x) = 26x N in the positive x direction moves an object from x = 0 m to x = 3 m.

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Answer true or false. The amount of work needed to lift a liquid of density 1.38 kg/m3 from a spherical tank of radius 7 m is Answer true or false. The amount of work needed to lift a liquid of density 1.38 kg/m<sup>3</sup> from a spherical tank of radius 7 m is   . .

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