Electrostatic Force/Coulomb's Law

[mattdsaun]

Homework Statement

Homework Equations

F=qE

The Attempt at a Solution

So in solving the problem, parts a) and b) were rather easy, and I believed part c) would be easy as well. I assumed:

F=10156*(1.6E-19) which came out to 1.63E-15, but that was apparently incorrect and I'm not sure what else to try. Any help is really appreciated.

 

[nrqed]

Homework Statement

Homework Equations

F=qE

The Attempt at a Solution

So in solving the problem, parts a) and b) were rather easy, and I believed part c) would be easy as well. I assumed:

F=10156*(1.6E-19) which came out to 1.63E-15, but that was apparently incorrect and I'm not sure what else to try. Any help is really appreciated.

Welcome to PhysicsForums!


You are doing it correctly. So there are three possibilities:

i) there is a mistake in the online answer checker,

ii) you just punched in the wrong values by mistake when you did your multiplication (easy to check!)

iii) or there is a mistake in the online answer checker for part A and the E field there is actually incorrect.


It seems to me that the most likely is i).

 

[mattdsaun]

Welcome to PhysicsForums!


You are doing it correctly. So there are three possibilities:

i) there is a mistake in the online answer checker,

ii) you just punched in the wrong values by mistake when you did your multiplication (easy to check!)

iii) or there is a mistake in the online answer checker for part A and the E field there is actually incorrect.


It seems to me that the most likely is i).

Thanks for the reply. I wasn't aware that the problem had limited attempts and since posting this I have run out of attempts unfortunately. I have emailed my professor to ask him what was wrong with it and hopefully it'll get fixed. Thanks for the quick response!

 

[BvU]

10156 is not the same as the 10516 I saw in post 1. So the most likely is ii. Easy to check that 1.6*1.05 is not 1.63 but 1.68 indeed.

Pity about the score, but perhaps you have learned something much more valuable...

 

[mattdsaun]

10156 is not the same as the 10516 I saw in post 1. So the most likely is ii. Easy to check that 1.6*1.05 is not 1.63 but 1.68 indeed.

Pity about the score, but perhaps you have learned something much more valuable...

Honestly did not even notice that, thanks for the help. That's what it was.