Consider two vectors in two dimension, a whose magnitude is a and direction is with the angel a with respect to the +x direction, and b whose magnitudes b and direction is with the angle beta with the x axis. show that the addition vector from a + b have the maximum magnitude when these two vectors point in the same direction, i. e., alpha = beta.

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

true is the correct answer

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as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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