Homework Statement
At what angle should the axes of two Polaroids be placed so as to reduce the intensity of the incident unpolarized light by an additional factor (after the first Polaroid cuts it in half) of 7? b) 25? c) 250?Homework Equations
The first polaroid decreases the intensity by...
Hi everyone,
It looks like there was a bug in the coding and they had programmed it with the wrong answer ...the right answer is 187. Stupid computer :rolleyes: Thank you so much for your help!
I did convert the density into kg/m^3 and got 187 A for the current, which is still wrong. I'm really stumped since I've redone it several times now and still gotten the same answer.
Thanks for your response though!
Homework Statement
In the figure, the top wire is 1.1 mm-diameter copper wire and is suspended in air due to the two magnetic forces from the bottom two wires. The current is 45 A in each of the two bottom wires.
Calculate the required current flow in the suspended wire...