Answer:
Decreases by 
times
Explanation:
The intensity of a sound is defined as the energy of the sound that is flowing in an unit time through the unit area which is in the direction that is perpendicular to the direction of the sound waves movement.
The intensity of energy is described by the inverse square law. It states that the intensity varies inversely with the distance square of the distance.
In other words, the sound intensity decreases as inversely proportional to the squared of the distance. i.e. 
In the context when the distance was 3 m, the intensity of the sound was = 
But when the distance became 6 cm or 0.06 m, the sound intensity decreases by = 
= times
Answer:
It flows in one direction. It goes out the positive side and back into the negative side.
Explanation:
There are images that can help you understand better. I hope this helped a little :)
h = average height of Niagara falls = 45 m
P = power generated by Stations I and II together = 1926 MW = 1926 x 10⁶ Watt
m = mass of water required to go over the falls
g = acceleration due to gravity
t = time = 1 sec
Power generated is given as
Power generated = potential energy lost/time
P = mgh/t
1926 x 10⁶ = m (9.8) (45)/1
m = 1926 x 10⁶ /(9.8 x 45)
m = 4.4 x 10⁶ kg
it is given that , 1 kg = 1 litre
hence
hence Volume of water = V = 4.4 x 10⁶ litre
Microwave and Infrared Radiation. Both are forms of electromagnetic radiation. Both are transmitted as waves. Waves are converted to heat.
<span>a particular kind of matter with uniform properties</span>
