Force f acts between a pair of charges, q1 and q2, separated by a distance d. for each of the statements, use the drop-down menus to express the new force in terms of f.
q1 is halved, q2 is doubled, but the distance between the charges remains d.
f
q1 and q2 are unchanged. the distance between the charges is doubled to 2d.
f/4
q1 is doubled and q2 is tripled. the distance between the charges remains d.
6f

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.

a 2,000 calorie based diet.