In this guided practice, I work through a projectile motion problem involving the level horizontal flight of a water balloon. I end up deriving an expression relating the range, launch angle, and initial speed of a projectile undergoing level horizontal flight. Level horizontal flight is the situation where a projectile takes off and lands at

In this problem we must use Coulomb’s Law to find the charge of two spheres. You do not know the charge or each sphere, but you are given the total charge of both. You are also given the distance between then and the magnitude of the electrostatic force each exerts on the other. The solution