Flux Consider the vector fields and curves in Exercises 57–58. a. Based on the picture, make a conjecture about whether the outward flux of F across C is positive, negative, or zero. b. Compute the flux for the vector fields and curves. 59. F and C given in Exercise 57 57. F = 〈 y − x , x 〉 ; C : r ( t ) = 〈 2 cos t , 2 sin t 〉 , for 0 ≤ t ≤ 2 π
Flux Consider the vector fields and curves in Exercises 57–58. a. Based on the picture, make a conjecture about whether the outward flux of F across C is positive, negative, or zero. b. Compute the flux for the vector fields and curves. 59. F and C given in Exercise 57 57. F = 〈 y − x , x 〉 ; C : r ( t ) = 〈 2 cos t , 2 sin t 〉 , for 0 ≤ t ≤ 2 π
Solution Summary: The flow of F on C is negative. The vector field F is directed inwards, but the flow is opposite to the orientation of the curve.
Flux Consider the vector fields and curves in Exercises 57–58.
a. Based on the picture, make a conjecture about whether the outward flux of F across C is positive, negative, or zero.
b. Compute the flux for the vector fields and curves.
59. F and C given in Exercise 57
57.
F
=
〈
y
−
x
,
x
〉
;
C :
r
(
t
)
=
〈
2
cos
t
,
2
sin
t
〉
,
for 0 ≤ t ≤ 2π
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
Evaluate the triple integral
3'
23
HIG
2
+3
f(x, y, z)dxdydz where f(x, y, z) = x +
2x-y
ม
u =
v =
and w =
2
2
3
Triple Integral
Region R
-2
x
N
2
y
3
Find the volume of the solid bounded below by the circular cone z = 2.5√√√x² + y² and above by the
sphere x² + y²+z² = 6.5z.
Electric charge is distributed over the triangular region D shown below so that the charge density at (x, y)
is σ(x, y) = 4xy, measured in coulumbs per square meter (C/m²). Find the total charge on D. Round
your answer to four decimal places.
1
U
5
4
3
2
1
1
2
5
7
coulumbs
Chapter 17 Solutions
MyLab Math with Pearson eText -- Standalone Access Card -- for Calculus: Early Transcendentals (3rd Edition)
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