Please answer questions in the picture below for a and b. Please show all steps

Question

Please answer questions in the picture below for a and b.

Please show all steps

Experimental results have found that a non-dimensional number St is a function of five variable: acceleration of gravity (g), viscosity (|i), density (p), particle velocity (U), and particle diameter (D). Data reveals that if we increase viscosity by n times, then St also increases by n-times. Data also reveals that St is inversely proportional to gravity (g). Find St? Express St as a function of the Reynolds number.

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