The relatively high resistivity of dry skin, about 1*106ω⋅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. part a assume the area of skin on the worker's palm that would contact a flat panel is 1.2*10-2 m2, then calculate the approximate resistance of the skin of the palm.

The integers a and b are said to be coprime or relatively prime if they have no common factor other than 1 and - 1, or equivalently, if their greatest common divisor is 1.

For example, 6 and 35 are relatively, but 6 and 27 are not because they are both divisible by 3.

The easiest way to figure if two number are relatively prime is to figure out their prime factors. If they don't share any, then they are relatively prime.

e. g.

6 = 2 x 3

35 = 5 x 7

These are relatively prime

6 = 2 x 3

27 = 3 x 3 x 3

These are not relatively prime