Describe the electromagnetic spectrum, electromagnetic waves, and give two examples of different types of electromagnetic waves.

Radio Wave

Micro Wave

Explanation:

Electromagnetic waves are transverse waves composed by the perpendicular oscillating electric and magnetic fields.

EM waves have both Electrical and magnetic features.

they travel in the velocity of light (3*10⁸ ms⁻¹)

Electromagnetic spectrum is obtained according to their wave length and the frequency. Due to wave length range it's categorized. Here is the decreasing  order of wave length and increasing order  of different wave types in electromagnetic spectrum

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

the closer the planet is to the sun, the larger the gravity