13 points!

when we see colors, it is because light is reflected off objects back to our eyes. different colors are due to the different of the light.

a)
amplitudes

b)
wave speeds

c)
wavelengths

d)
polarization

What is the frequency of a light wave with a wavelength of 620nm

There are two routes similar in terrain; however, one route has an incline of approximately 28 degrees, and you must decide on which route to take. what is the maximum road grade that your fully loaded ecv can climb?

You can melt ice by applying pressure because the solid/liquid line has a slope.