Time taken by the rubber-soled shoes to reduce a person's potential from 3.00×10³ V to 100V is 3.91s
The initial potential difference 
is related to the final potential difference 
by
Our target is to find t, so we rearrange equation (1) for t to be
The body has a capacitance 150 pF while the foot has a capacitance 80 pF and both are in parallel connection. So, the equivalent capacitance is
The shoes of the rubber-soled has resistance 
. Plug the values for 
and C into equation (2) to get the time t.
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Answer:
The answer to your question is:
Explanation:
Data
mass = 4.33 kg
E = 41.7 J
v = ?
Formula
Ke = (1/2)mv²
Clear v from the equation
v = √2ke/m
Substitution
v = √2(41.7)/4.33
v = 19.26 m/s Result
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