QUESTION 9 A cake is shaped like a hemisphere of radius 4 units with its base on the xy plane (a) Find the volume of th...
A cake is shaped like a hemisphere of radius 2 with its base on the xy-plane. A wedge of the cake is removed by making two slices from the center of the cake outward, perpendicular to the xy-plane and separated by an angle of ф Use a double integral to find the volume of the slice for φ- . Use geometry to check your answer. Now suppose the cake is sliced by a plane perpendicular to the xy-plane at x...
Find the mass of the cylinder (centered on the z-axis and base in the xy-plane) with radius 4 and height 6 and density function f(x,y,z) d density function f(x, y, z) (set-up triple integral then evaluate by hand) x2 + y2 +1 2 ty +1 Find the mass of the cylinder (centered on the z-axis and base in the xy-plane) with radius 4 and height 6 and density function f(x,y,z) d density function f(x, y, z) (set-up triple integral then...
6. (12pts) Consider the solid that is above the xy-plane, bounded above by =/4-x-y and below by +y a. Sketch the solid formed by the given surfaces b. Set up in rectangular coordinates the triple integral that represents the yolume of the solid. Sketch the appropriate projection. Do NOT evaluate the integrals. (Hint: Let dV- d dy de) c. Set up in cylindrical coordinates the triple integral that represents the volume of the solid. Sketch the appropriate projection. Do NOT...
Use cylindrical coordinates to work out the volume of a ball of radius 1, and to find the center of mass of the upper half of of the ball. (If you take the hemisphere to have its origin at (0,0,0) and it's base in the XY-plane the z-coordinate of the center of mass is the "average value of z" over the hemisphere, or the total moment divided by the volume.) Parametrize the upper hemisphere using cylindrical coordinates and find it's...
Let E-xi vi + 2zk be an electrostatic field. Use Gauss's Law to find the total charge enclosed by the closed surface consisting of the hemisphere- V1-x2 - y2 and its circular base in the xy-plane. Use the Divergence Theorem to evaluate F.N dS and find the outward flux of F through the surface of the solid bounded by the graphs of the equations. Use a computer algebra system to verify your results F(x, y, z) =xyì + 7yj +xzk...
A milk carton is shaped like a tall box with a triangular prism on top. The sides of the top section are isosceles triangles. This particular milk carton has a 5 inch × 5 inch square base, and is 11 inches tall. (See the picture.) in 8 in Suppose you're filling the carton with liquid at a rate of 10 inches3 per minute. In this problem, you'll figure out the rate of change of the height of the liquid in...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...