Answer:
A vibration is the primary source of a sound.
<u>Answer:</u>
The ball fall vertically 2.69 ft by the time it reached home plate 60.0 ft away.
<u>Explanation:</u>
Fastest recorded pitches major-league baseball, thrown by nolan ryan in 1974 = 100.8 mi/hr = 44.8 m/s
The horizontal distance to home plate = 60.0 ft = 18.288 m
We have the horizontal velocity = 44.8 m/s
So time taken = 18.288/44.8 = 0.408 seconds.
The distance traveled by baseball vertically is found out by equation 
Here u =0m/s, a = 9.81
and t = 0.408 s
Substituting

So vertical distance traveled = 0.82 m = 2.69 ft
Answer: Light is a form of electromagnetic radiation because it has the ability to travel from one type of medium to another and can also carry some energy along with it. A light wave has two components, namely the electric field component as well as the magnetic field component that are both perpendicular to the propagating direction.
The visible light lies between the ultraviolet and the infrared lights, with wavelength from 400 nm to 700 nm respectively. This is collectively known as the visible spectrum of light.