- #1

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## Homework Statement

F = xi + yj + zk, s = x^2 + y^2 + z^2

## Homework Equations

## The Attempt at a Solution

div F = 1+1+1=3

area of sphere = 4pi

i can just multiply them to get 12pi as an answer right?

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- Thread starter joemama69
- Start date

- #1

- 399

- 0

F = xi + yj + zk, s = x^2 + y^2 + z^2

div F = 1+1+1=3

area of sphere = 4pi

i can just multiply them to get 12pi as an answer right?

- #2

Homework Helper

Gold Member

- 2,123

- 41

No. You want the volume of the sphere, not the area.

- #3

- 399

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ooooops

V of sphere = 4/3 pi r^3 where r = 1, V = 4/3 pi

so i got 4pi

V of sphere = 4/3 pi r^3 where r = 1, V = 4/3 pi

so i got 4pi

- #4

Homework Helper

Gold Member

- 2,123

- 41

Correct.

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