The lasers are made from stacking light waves that add together into a larger wave in a process known as constructive interference. This happens only when waves would meet while they are traveling in the same medium. Constructive interference happens at any part of the medium where two waves moves in the same direction. When these waves would meet, they add up and make a larger wave. It is the interference of at leat two waves which produces a single amplitude where it is equal to the sum of the amplitudes of each wave that interfered. The other type is the destructive intereference where the result is a smaller wave.<span />
Here object is dropped from height "h"
so we can say its initial speed is zero
and it will accelerate downwards due to gravity
now we can say it will take time T to hit the ground
now we can use
now it is given that it will take 1 second to drop h/2 height to strike the ground
so here we have can say that in "T - 1" s it will cover the h/2 distance from start
now we can say
from above two equations we have
now we can find total height of the drop by first equation
8.34 m/s
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The statement that best explains the movement of electric current is that the ground is positively charged and the clouds are negatively charged.
<h3>What is lightning storm?</h3>
Lightning storm can be defined as the electrical outlet that occurs due to unsteadiness of the storm clouds and the ground.
Lightning storm occurs when opposite charges build up enough in the air leading to rapid discharge of electricity.
Learn more about storms here:
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<span>in a Nonpolar covalent</span>