1)A stone of mass 20g is released from a catapult whose rubber has been stretching through 4cm. if the force constant of the rubber is 200Nm^-1, calculate the velocity with which the stone leaves the catapult 2)A spiral spring is compressed by 0.02m. calculate the energy stored in the spring, if the force constant is 400Nm^-1​

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with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.

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.