Suppose that 2 j of work is needed to stretch a spring from its natural length of 36 cm to a length of 52 cm. (a) how much work is needed to stretch the spring from 44 cm to 48 cm? (round your answer to two decimal places.) j (b) how far beyond its natural length will a force of 15 n keep the spring stretched? (round your answer one decimal place.) cm

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.