- #1

melissa_y

- 17

- 0

Ok so wouldn't I just use the equation:

(Va-Vb)=Wba/q

(-60-630)=Wba/(1.6 x 10^-19)

Wba=-1.104 x 10^-16 J

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- Thread starter melissa_y
- Start date

- #1

melissa_y

- 17

- 0

Ok so wouldn't I just use the equation:

(Va-Vb)=Wba/q

(-60-630)=Wba/(1.6 x 10^-19)

Wba=-1.104 x 10^-16 J

- #2

James R

Science Advisor

Homework Helper

Gold Member

- 601

- 15

Your equation looks fine to me. What's the answer you expected?

- #3

melissa_y

- 17

- 0

Wba=-1.104 x 10^-16 J

But i keep entering it into the CAPA and it says wrong answer...

But i keep entering it into the CAPA and it says wrong answer...

- #4

James R

Science Advisor

Homework Helper

Gold Member

- 601

- 15

The question is ambiguous, since it doesn't specify who or what is doing the work. If it's the electric field, then the answer is negative. If it's an external force, the answer is positive.

- #5

Pengwuino

Gold Member

- 5,124

- 17

I truly hate negatives...

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