Physics

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The relatively high resistivity of dry skin, about 1x10^6 Ohm m, can safely limit the flow of current into deeper tissues of the body. Suppose an electrical worker places his palm on an instrument whose metal case is accidently connected to a high voltage. The skin of the palm is about 1.5 mm thick.

Assume the area of skin on the worker's palm that would contact a flat panel is 1.5×10^−2 m^2, then calculate the approximate resistance of the skin of the palm(Value and units).

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