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

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance

Contains chemical energy. a. heat b. light c. natural gas

Which of the following is a measure of the amount of light a star directly emits?               a.  luminosity    b.  intensity    c.  wavelength    d.  brightness