Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? It contains ultraviolet, visible, and infrared light.

It is divided into nine ranges of wavelengths.

It is divided into seven ranges of wavelengths.

It contains only the colors of the rainbow and television waves.

Ireally need this answer sombody fast fast

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory