The wavelength of a ray of blue light is 475 nm. What is the frequency of this light? Give your answer in terahertz (THz), remembering to include a unit. Take the speed of
light to be 3.00x108 m/s.

Why is no-till farming more sustainable than many traditional methods of farming

Ahole in the ground in the shape of an inverted cone is 14 meters deep and has radius at the top of 11 meters. the cone is filled to the top with sawdust. the density of the sawdust depends upon the depth, x, following the formula ρ ( x ) = 2.5 + 1.2 e − 0.7 x kg/m3. find the total mass of sawdust in the conical hole.

Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum.