Homework Statement
[/B]
This is a seemingly simple problem. All I have to do is multiply two matrices:
[ 1 0 ]
[ 0 1 ] (A)
and
[ 2 ]
[ 3 ] (B)
The Attempt at a Solution
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Because the matrix A has the same number of columns as matrix B has rows, and because matrix A is an identity matrix...
You know, I'm beginning to think that my problem lies there. As I look around the internet, it seems like everyone has their own personal formula for Edisk, such as this website which essentially multiplies my formula by 2.
Now that's not to say I'm not peeved that my professor picked a...
Homework Statement
Two 10-cm-diameter charged disks face each other, 29cm apart. The left disk is charged to -50 nC and the right disk is charged to +50 nC. What is the magnitude of the electric field E⃗ at the midpoint between the two disks?
The answer is 3.9 x 104 N/C
Homework...