Suppose we have a single particle moving in one dimension whose potential energy as a function of x x is u ( x ) u(x). show (using the chain rule and the relationship f ( x ) = − u ′ ( x ) f(x)=−u′(x)) equation (4) (4), conservation of energy, for this system.

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answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

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 answer is 12 as i may remember

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