Q: A 1600-lb elevator is suspended by a 200-ft
A 1600-lb elevator is suspended by a 200-ft cable that weighs 10 lb/ft. How much work is required to raise the elevator from the basement to the third floor, a distance of 30 ft?
See AnswerQ: Find the volumes of the solids obtained by rotating the region bounded
Find the volumes of the solids obtained by rotating the region bounded by the curves y = x and y = x2 about the following lines. (a). The x-axis (b). The y-axis (c). y = 2
See AnswerQ: The left, right, Trapezoidal, and Midpoint Rule approximations were
The left, right, Trapezoidal, and Midpoint Rule approximations were used to estimate f20 f (x) dx, where f is the function whose graph is shown. The estimates were 0.7811, 0.8675, 0.8632, and 0.9540,...
See AnswerQ: The angle of elevation of the sun is decreasing at a rate
The angle of elevation of the sun is decreasing at a rate of 0.25 rad/h. How fast is the shadow cast by a 400-ft-tall building increasing when the angle of elevation of the sun is π/6?
See AnswerQ: A paper cup has the shape of a cone with height 10
A paper cup has the shape of a cone with height 10 cm and radius 3 cm (at the top). If water is poured into the cup at a rate of 2 cm3/s, how fast is the water level rising when the water is 5 cm deep...
See AnswerQ: A balloon is rising at a constant speed of 5 ft/
A balloon is rising at a constant speed of 5 ft/s. A boy is cycling along a straight road at a speed of 15 ft/s. When he passes under the balloon, it is 45 ft above him. How fast is the distance betwe...
See AnswerQ: A water skier skis over the ramp shown in the figure at
A water skier skis over the ramp shown in the figure at a speed of 30 ft/s. How fast is she rising as she leaves the ramp?
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