Sound is all about vibrations.
The source of a sound vibrates, bumping into nearby air molecules which in turn bump into their neighbours, and so forth. This results in a wave of vibrations travelling through the air to the eardrum, which in turn also vibrates.
<span>c. coefficients.
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6.24894195 × 1030<span> kilograms</span>
Upward and downward forces cancel out. Net force is 8 newtons to the right
Answer:
c. Ptolemy
Explanation:
Ptolemy was the one to believe that other planets and celestial objects orbited around the earth