What could you do to increase the electric force between two charged particles by a factor of 16?
A. Reduce one particle's charge by a factor of 16.
B. Increase one particle's charge by a factor of 4.
C. Increase one particle's charge by a factor of 16.
D. Reduce one particle's charge by a factor of 4.

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.

b. a lightning bug, plug of grass, and a worm

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000