Question

Draw a sound wave of amplitude 5 dB and frequency 0.1 Hz.​

Answer 1

Explanation:

Universe is all existing matter and space considered as a whole. World refers to the Earth, together with all people and countries. Universe consists of solar systems, planets, moons, stars, galaxies and intergalatical space. The world (planet Earth) is a part of the universe.

Answer 2

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