A suspended pith ball possessing +10uC of charge is placed 0.02 m away from a metal plate possessing -6uC of charge. What is the force on the negatively charged object? a 3220 N b 1350 N e -2789N

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

What happens to an isotope during radioactive decay?