Section 12_5

# Section 12_5 - the region D and has the given density...

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WebAssign.net Tuesday, November 29, 2005 08:05 PM EST Logged in as [email protected] Logout Home | My Assignments | Grades | Communication | Calendar Guide | Help | My Options Home > My Assignments > Section 12.5 (Homework) GRAHAM JONATHAN TIMOTHY MA 242, section 013, Fall 2005 Instructor: Frank Ingram North Carolina State University About this Assignment Due: Friday, October 28, 2005 11:02 PM EDT Current Score: 11 out of 11 Question Score Description Applications of Double Integrals pts subs 1 3/3 1/20 3/3 Viewing: Last Response View: All Responses Notes 1. [SCalcCC2 12.5.02.] Electric charge is distributed over the disk x 2 + y 2 4 so that the charge density at ( x , y ) is ( x , y ) = x + y + x 2 + y 2 (measured in coulombs per square meter). Find the total charge on the disk. 25.1 [25.1] C pts subs 1 2/2 1/20 2 1/1 1/20 3 1/1 1/20 2. [SCalcCC2 12.5.08.] Find the mass and center of mass of the lamina that occupies

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Unformatted text preview: the region D and has the given density function . D = {( x , y ) | 0 y cos x , 0 x 4/4 Viewing: Last Response View: All Responses Notes /2}; ( x , y ) = x Mass .571 [0.571] Center of mass (.8189 [0.819] ,.3213 [0.321] ) pts subs 1 2/2 1/20 2 2/2 1/20 4/4 Viewing: Last Response View: All Responses Notes 3. [SCalcCC2 12.5.12.] A lamina occupies the region inside the circle x 2 + y 2 = 2 y but outside the circle x 2 + y 2 = 1. Find the center of mass if the density at any point is inversely proportional to its distance from the origin. (0 [0] ,1.265 [1.26] ) Home My Assignments WebAssign tm 4.0 © 1997-2005 by North Carolina State University. All rights reserved....
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## This note was uploaded on 06/08/2011 for the course MA 241 taught by Professor Mccollum during the Spring '08 term at N.C. State.

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Section 12_5 - the region D and has the given density...

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