What is the atomic bomb equivalent to a 7.0 earthquake

Describe uniform velocity and variable velocity in short

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?