An electrician timed a box traveling over a conveyor and measured 25 sec to travel 30 feet. if the gearbox ratio is 20: 1 and the driver drum is 24", what is the rpm of the motor?

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Will give brainliest! which statement best describes the similarities between fundamental forces? electromagnetic and strong nuclear forces influence the interaction between charged particles within an atom. gravitational and magnetic forces are both types of charges that occur in nature. nuclear and magnetic forces are both related to mass and weight. strong nuclear force is most like electrical force because they are both related to distance.

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?