Question

Approximate the change in magnitude between two charges when distance increases from r=16m to r=17m. (F(r)=0.02/r^2)

Answer 1

Correct answer is -9.77 X 10^-6. No clue how to do this problem.

Answer 2

I know i gave to use Linear Approximation.

Answer 3

Alright, so would you mind helping me step by step? I've tried everything for this problem/

Answer 4

Forgot to prefix the - (minus sign) on the final answer.

Answer 5

I see thats what i did, however thats not the correct answer.

Answer 6

It should be -9.77 X 10^-6

Answer 7

Well they said to approximate, but I can't believe there would be that much difference in the rsults.

Answer 8

Yeah, its weird. We're supposed to use Linear Approximation or whatever that's called.

Answer 9

Hopefully Sgt. Sausage will clear this up.

Answer 10

wait what? i was the one asking the question lol

Answer 11

Oh, well maybe you will figure it out. What is linear approximation?

Answer 12

I think the formula is L(x)=f(a)=f'(a)(x-a)

Answer 13

How is the problem presented?

Answer 14

This is a different example, but same problem.

Answer 15

F(r)=.02r^-2
F(r)' =.04r^-3