The uncertainty in a proton's position is 0.015 nm. a) what is the minimum uncertainty δp in its momentum? b) what is the kinetic energy of a proton whose momentum is equal to this uncertainty (δp=p)? (unit: mev)

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

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?

Smallest intensity of a stimulus that you can detect 50 percent of the time is