I've made some instructional videos
for STEM (Science, Technology, Engineering,
There are a couple examples posted below.
See more videos on my YouTube page here here
I am also available for private tutoring. Email me if interested.
Example 1: Rotate the region bounded by f(x) = x^2+1, g(x) = 1,
x = 0, and x = 2 about the x-axis.
Three point charges lie along a straight line as shown
in Figure P23.12, where q1 = 6 mC, q2 = 1.5 mC,
and q3 = -2 mC.
The separation distances are d1 = 3.00 cm and d2 = 2.00 cm.
Calculate the magnitude and direction of the net electric force on (a) q1, (b) q2, and (c) q3.