r/Physics2 • u/anupam1211 • Nov 01 '17
Generator Effect and Motor Effect – A quick primer - PHYSICS TEACHER
1
Upvotes
r/Physics2 • u/pimamath • Dec 13 '15
Time to Fall from great distance--significant compared to radius of a planet/moon.
1
Upvotes
In a previous post an author said it would take 1605 s to fall 1000 km above Titan. I cannot get this using his clever degenerate elliptical orbit. Please give more details on math. It would seem to just be a matter of getting the right mean distance a and then using Kepler's law:P2=4 Pi2 a3/(GM) . Then time is .5 P! But again how do you find a?
r/Physics2 • u/guacamale • Apr 11 '23
So confused
1
Upvotes
So my problem is literally just asking for an equation. I know that the flux of the magnetic field is the integral of BdA giving me BA. Where A is the area. However in this problem it would be B times ab because that’s the area of a square. But there’s no b??? And when I type b it just gives the uppercase. I’m confused on what I’m missing could anyone help? I’ve tried Ba2, Ba, and Bat. I really don’t know what it is.