A 1.3-kg block is pushed up against a stationary spring compressing it a distance of 4.2 cm. When the blocks spring is released, the spring pushes it away across a friction less horizontal surface. What is the speed of the block, given that the spring constant is 1400 N/m

multiply 2kg by latent heat of vap

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

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.