# Quiz 13: Vector Calculus

Mathematics

Q 1Q 1

Use the Divergence Theorem to calculate the surface integral ; that is, calculate the flux of across . S is the surface of the box bounded by the coordinate planes and the planes .
A)
B)
C)
D)
E)

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Multiple Choice

E

Q 2Q 2

Use a computer algebra system to compute the flux of F across S. S is the surface of the cube cut from the first octant by the planes
A)4
B)1
C)3
D)
E)0.67

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Multiple Choice

D

Q 3Q 3

Assuming that S satisfies the conditions of the Divergence Theorem and the scalar functions and components of the vector fields have continuous second order partial derivatives, find , where a is the constant vector.
A)7
B)3
C)6
D)5
E)8

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B

Q 4Q 4

Use Stokes' Theorem to evaluate is the part of the paraboloid that lies inside the cylinder oriented upword.
A)2
B)
C)4
D)3
E)1

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Multiple Choice

Q 5Q 5

Use Stokes' Theorem to evaluate where and is the triangle with vertices is oriented counterclockwise as viewed from above.
A)
B)
C)
D)
E)

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Q 6Q 6

Use Stokes' Theorem to evaluate where is the circle . is oriented counterclockwise as viewed from above.
A)
B)
C)
D)
E)

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Q 7Q 7

Use Stokes' Theorem to evaluate where is the curve of intersection of the plane and the cylinder is oriented counterclockwise as viewed from above.
A)
B)
C)
D)
E)

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Q 8Q 8

Use Stoke's theorem to evaluate C is the curve of intersection of the plane z = x + 9 and the cylinder

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Q 9Q 9

Suppose that where g is a function of one variable such that .Evaluate where S is the sphere
A)
B)
C)
D)
E)None of these

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Q 10Q 10

Evaluate the surface integral. S is the part of the plane that lies in the first octant.
A)
B)
C)
D)
E)

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Multiple Choice

Q 11Q 11

Evaluate the surface integral. Round your answer to four decimal places. S is surface
A)
B)
C)
D)
E)

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Q 12Q 12

The temperature at the point in a substance with conductivity is Find the rate of heat flow inward across the cylindrical
A)
B)
C)
D)
E)

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Multiple Choice

Q 13Q 13

Evaluate the surface integral for the given vector field F and the oriented surface S. In other words, find the flux of F across S. in the first octant, with orientation toward the origin.

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Q 14Q 14

Evaluate the surface integral for the given vector field F and the oriented surface S. In other words, find the flux of F across S.

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Q 15Q 15

Find the moment of inertia about the z-axis of a thin funnel in the shape of a cone if its density function is

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Q 16Q 16

A fluid with density flows with velocity Find the rate of flow upward through the paraboloid

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Q 17Q 17

Use Gauss's Law to find the charge contained in the solid hemisphere , if the electric field is

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Multiple Choice

Q 19Q 19

Set up, but do not evaluate, a double integral for the area of the surface with parametric equations

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Q 20Q 20

Find an equation of the tangent plane to the parametric surface represented by r at the specified point. ;

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Q 21Q 21

Find the area of the surface S where S is the part of the plane that lies above the triangular region with vertices , and

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Q 22Q 22

Find the area of the surface S where S is the part of the surface that lies inside the cylinder

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Q 28Q 28

Determine whether or not vector field is conservative. If it is conservative, find a function f such that

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Q 31Q 31

Let f be a scalar field. Determine whether the expression is meaningful. If so, state whether the expression represents a scalar field or a vector field.curl f

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Q 32Q 32

Let f be a scalar field. Determine whether the expression is meaningful. If so, state whether the expression represents a scalar field or a vector field.

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Q 33Q 33

Use Green's Theorem to evaluate the line integral along the positively oriented closed curve C. , where C is the triangle with vertices , , and .
A)
B)
C)
D)

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Q 34Q 34

Use Green's Theorem to evaluate the line integral along the positively oriented closed curve C. , where C is the boundary of the region bounded by the parabolas and .
A) + e
B) + e
C)
D)

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Multiple Choice

Q 35Q 35

A particle starts at the point , moves along the x-axis to (3, 0) and then along the semicircle to the starting point. Use Green's Theorem to find the work done on this particle by the force field
A)0
B)
C)
D)
E)

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Multiple Choice

Q 36Q 36

Let D be a region bounded by a simple closed path C in the xy. Then the coordinates of the centroid where A is the area of D.Find the centroid of the triangle with vertices (0, 0), ( , 0) and (0, ).
A)
B)
C)
D)
E)

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Multiple Choice

Q 37Q 37

A plane lamina with constant density occupies a region in the xy-plane bounded by a simple closed path C. Its moments of inertia about the axes are Find the moments of inertia about the axes, if C is a rectangle with vertices (0, 0), (4, 0), (4, 5) and .
A)
B)
C)
D)
E)

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Multiple Choice

Q 38Q 38

Use Green's Theorem to find the work done by the force in moving a particle from the origin along the x-axis to (1, 0) then along the line segment to
(0, 1) and then back to the origin along the y-axis.

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Q 39Q 39

Determine whether F is conservative. If so, find a function f such that .
A)
B)not conservative
C)
D)

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Multiple Choice

Q 40Q 40

Let where .Which of the following equations does the line segment from to satisy?
A)
B)
C)none of these

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Q 41Q 41

Determine whether or not F is a conservative vector field. If it is, find a function f such that

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Q 43Q 43

Suppose that F is an inverse square force field, that is, where Find the work done by F in moving an object from a point along a path to a point in terms of the distances and from these points to the origin.

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Q 46Q 46

A thin wire is bent into the shape of a semicircle If the linear density is , find the exact mass of the wire.
A)
B)
C)
D)
E)

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Q 47Q 47

Find the exact mass of a thin wire in the shape of the helix if the density is 5.
A)
B)
C)
D)
E)

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Q 48Q 48

Find the work done by the force field on a particle that moves along the parabola
A)
B)
C)
D)
E)

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Q 50Q 50

Evaluate the line integral over the given curve C. , where C is the line segment joining (-2, -1) to (4, 5)

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Q 53Q 53

The flow lines (or streamlines) of a vector field are the paths followed by a particle whose velocity field is the given vector field. Thus, the vectors in a vector field are tangent to the flow lines. The flow lines of the vector field satisfy the differential equations and Solve these differential equations to find the equations of the family of flow lines.

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Q 54Q 54

A particle is moving in a velocity field At time t = 1 the particle is located at the point (1, 5, 5).a). What is the velocity of the particle at t = 1?
b). What is the approximate location of the particle at t = 1.01?

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