A block of mass 1.0 kg is pushed against a spring, with a spring constant of 1000 N/m. When the block is released it move up a hill of height 0.204 m as shown in the diagram above. The block has a speed of 3.46 m/s at the top of the hill. How much was the spring compressed in the beginning?

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

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