I've made some instructional videos
for STEM (Science, Technology, Engineering,
Mathematics) classes.

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.

**Example 2:**
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.