Red light can have a wavelength of 706 nm which means 0.000000706 meters. Which is closet to the frequency of red light if light travels at 300,000,000 m/s?

Auniform crate c with mass mc is being transported to the left by a forklift with a constant speed v1. what is the magnitude of the angular momentum of the crate about point a, that is, the point of contact between the front tire of the forklift and the ground