sandy is whirling a ball attached to a string in a horizontal circle over his head. if sandy doubles the speed of the ball, what happens to the tension in the string?
a) it doubles.
b) it quadruples.
c) it is cut in half.
d) it remains constant.

1/0.14nm = 10^10/1.4 a lot

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.

the rearrangement of particles in a physical change. hope this

k2s for potassium sulphide