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.

The resistance of the skin is 98 kΩ

Explanation:

Given :

Resistivity Ωm

Thickness m

The resistance of skin,

We assume radius of worker palm,

m

Area of worker palm,

So the resistance of palm is,

Ω

Therefore, the resistance of the skin is 98 kΩ

scientific laws are the result of testing theories and proving them to be facts.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.