A wave has a speed of 30 m/s and a wavelength of 3 meters. Calculate its frequency.

Aregular polygon has angkes of size 150° each.how many side has the polygon

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?

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.