Acharge of 100 elementary charges is equivalent to (1) 1.60 times 10^-21 c (2) 1.60 times 10^-17 c (3) 6.25 times 10^16 c (4) 6.25 times 10^20 c

(2) 1.60 times 10^-17 C

Explanation:

The value of one elementary charge is

In this problem, we have 100 elementary charges: to find how many Coulombs it corresponds, we have to set up the following proportion

And solving for x, we find

So, the correct answer is

(2) 1.60 times 10^-17 C

d eras and periods

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.