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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The domains in a temporary magnet easily lose alignment, but the domains in a permanent magnet keep their alignment.
Amplitude is the pair of vertical buttons, so to speak. Compressions are the bunched up vertical lines with the purple arrows pointing left and right. Rarefactions are purple arrows pointing down. Wavelength is crest to crest purple buttons. Associated LH and RH pointing arrows.
In a stronger gravitational field a given mass will have a larger weight.
