Recent content by niggchao

Thank you sir! This wolfram alpha is amazing. I didn't know something like this exists. Thanks again!

Not really sure if I understood the dS part but I'll try cos45 = dx/dζ dζ = dx/cos45 dS = (1/cos45) dxdy dS = (-https://upload.wikimedia.org/math/8/7/5/875326710761d5ed42bdc6e30c4bf962.pngcos45 - [PLAIN][PLAIN]https://upload.wikimedia.org/math/8/b/a/8baf9dc7043aae61e37e171dc9f537e9.pngsin45)...

and http://www4f.wolframalpha.com/Calculate/MSP/MSP6082070f83052eaehe200002h13c1i6iciah25i?MSPStoreType=image/gif&s=40&w=93.&h=28. then B = (- sinφ + cosφ) μoI/2π*sqrt(x2+y2) dS = (-https://upload.wikimedia.org/math/8/7/5/875326710761d5ed42bdc6e30c4bf962.pngcos45 -...

Homework Statement A rectangular coil is composed of 150 turns of a filamentary conductor. Find the mutual inductance in free space between this coil and an infinite straight filament on the z axis if the four corners of the coil are located at Homework Equations B = (phi-hat) μoI/2πr dS =...

This is great. I love physics. I love learning. Thanks for having me!