Mechanical Waves require a medium to travel through in order to transport their energy from one location to another.
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Force = mass times acceleration
F = 21000 x 36.9 = 774900
Therefore, 774900N force is required.
A plateau period refers to a period in life where you are kind of stuck in the middle. There is little growth or decline so you are kind of at a standstill.
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To keep the energy going every day
