The snowball in problem #4 was thrown by a 35.0kg mean-spirited female standing at rest on the same frictionless frozen lake. How fast, and in what direction, did this girl move after throwing the snowball?

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

f=ma newton's second law 7x8=56n

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.

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