Please help. How is the microscopic level of energy related to the macroscopic level of energy?

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.