Section 13.2

# Section 13.2 - F over C 1 and C 2 positive negative or zero...

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12/9/08 7:47 PM Section 13.2 Page 1 of 2 http://www.webassign.net/[email protected]/[email protected] Section 13.2 (Homework) MICKLES BRANDON L MA 242, section 008, Fall 2008 Instructor: April Alston Web Assign Current Score: 10.5 out of 10.5 Due: Friday, November 14, 2008 10:08 PM EST Description Line Integrals The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. [SCalcCC2 13.2.02.] 2/2 points Evaluate the line integral, where C is the given curve. 1.6277 1.63 2. [SCalcCC2 13.2.08.] 2/2 points Evaluate the line integral, where C is the given curve. C is the line segment from (0,6,-1) to (4,1,5) 163.799 164 3. [SCalcCC2 13.2.14.] 0.5/0.5 points The figure shows a vector field F and two curves C 1 and C 2 . Are the line integrals of

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Unformatted text preview: F over C 1 and C 2 positive, negative, or zero? 12/9/08 7:47 PM Section 13.2 Page 2 of 2 http://www.webassign.net/[email protected]/[email protected] F over C 1 positive zero negative F over C 2 positive negative zero 4. [SCalcCC2 13.2.16.] 2/2 points Evaluate the line integral C F· d r , where C is given by the vector function r ( t ). F ( x , y, , z ) = yz i + xz j + xy k , r ( t ) = t i + t 2 j + t 3 k , 0 t 3 729 729 5. [SCalcCC2 13.2.26.] 4/4 points Find the mass and center of mass of a thin wire in the shape of a quarter-circle x 2 + y 2 = r 2 , x 0, y 0, if the density function is ρ ( x , y ) = x + y . = (r*pi+2r)/8 (r*pi + 2*r)/8 = (r*pi+2r)/8 (r*pi + 2*r)/8...
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