Question

the electrostatic force vector F for a system of unit charges is defined by vector F=(x^2+y^2+z^2)^n...

the electrostatic force vector F for a system of unit charges is defined by vector F=(x^2+y^2+z^2)^n (xi+yj+zk). where is an integer. Find (a) div vector F, (b) a scalar potential psi such that F =-delta psi. Leave your answer in terms of vector |r| where vector r=(xi+yj+zk).

the electrostatic force vector F for a system of unit charges is defined by vector F=(x^2+y^2+z^2)^n (xi+yj+zk). where is n an integer. Find (a) div vector F, (b) a scalar potential psi such that F =-delta psi. Leave your answer in terms of vector |r| where vector r=(xi+yj+zk).

Homework Answers

Answer #1

(a) I have calculated the divergence in cartesian co-ordinates and then converted to spherical co-ordinates.

(b) This is also very straightforward question.

I have equated x-components in last part. You can also do this by equating y- and z- components.The answer would be same.

Hope you find it useful. Sorry for any calculation mistake. have a nice day :)

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Find the flux of F across S, S F · N dS where N is the...
Find the flux of F across S, S F · N dS where N is the upward unit normal vector to S. F(x, y, z) = xi + yj + zk S: z = 1 − x^2 − y^2, z ≥ 0
] Evaluate the surface integral SF∙dS for the vector field Fx,y,z=xi+yj+zk , where S is the...
] Evaluate the surface integral SF∙dS for the vector field Fx,y,z=xi+yj+zk , where S is the surface given by z=1-x2-y2, z≥0 , where S has the positive (outward) orientation. Note: SF∙N dS=RF∙-gxx,yi-gyx,yj+kdA
A) Consider the vector field F(x,y,z)=(9yz,−8xz,8xy). Find the divergence and curl of F. div(F)=∇⋅F= ? curl(F)=∇×F=(...
A) Consider the vector field F(x,y,z)=(9yz,−8xz,8xy). Find the divergence and curl of F. div(F)=∇⋅F= ? curl(F)=∇×F=( ? , ? , ?) B) Consider the vector field F(x,y,z)=(−4x2,0,3(x+y+z)2). Find the divergence and curl of F. div(F)=∇⋅F= ? curl(F)=∇×F=( ? , ? , ?).
1. A function f : Z → Z is defined by f(n) = 3n − 9....
1. A function f : Z → Z is defined by f(n) = 3n − 9. (a) Determine f(C), where C is the set of odd integers. (b) Determine f^−1 (D), where D = {6k : k ∈ Z}. 2. Two functions f : Z → Z and g : Z → Z are defined by f(n) = 2n^ 2+1 and g(n) = 1 − 2n. Find a formula for the function f ◦ g. 3. A function f :...
Evaluate the line integral ∫CF⋅dr, where F(x,y,z)=5xi+yj−2zk and C is given by the vector function r(t)=〈sint,cost,t〉,...
Evaluate the line integral ∫CF⋅dr, where F(x,y,z)=5xi+yj−2zk and C is given by the vector function r(t)=〈sint,cost,t〉, 0≤t≤3π/2.
(1 point) Evaluate the line integral ∫CF⋅dr∫CF⋅dr, where F(x,y,z)=3xi+4yj-zk and C is given by the vector...
(1 point) Evaluate the line integral ∫CF⋅dr∫CF⋅dr, where F(x,y,z)=3xi+4yj-zk and C is given by the vector function r(t)=〈sint,cost,t〉, 0≤t≤3π/2.
Calculate differentiability of f(x,y,z) = x^2 + y^2 + z^2 this function is defined in R^2
Calculate differentiability of f(x,y,z) = x^2 + y^2 + z^2 this function is defined in R^2
Let f(x, y) =sqrt(1−xy) and consider the surface S defined by z=f(x, y). find a vector...
Let f(x, y) =sqrt(1−xy) and consider the surface S defined by z=f(x, y). find a vector normal to S at (1,-3)
17 Find curl F A) F=z^2xi+y^2zj-z^2yk B) given vector field F= (x+xz^2)I +xyj +yzk, Find div...
17 Find curl F A) F=z^2xi+y^2zj-z^2yk B) given vector field F= (x+xz^2)I +xyj +yzk, Find div and curl of F.
] Consider the function f : R 2 → R defined by f(x, y) = x...
] Consider the function f : R 2 → R defined by f(x, y) = x ln(x + 2y). (a) Find the gradient of f(x, y) at the point P(e/3, e/3). (b) Use the gradient to find the directional derivative of f at P(e/3, e/3) in the direction of the vector ~u = h−4, 3i. (c) Find a unit vector (based at P) pointing in the direction in which f increases most rapidly at P.