In your own words why do you think it is important to have strong muscles ?

Calculate the kinetic energy of earth due to its spinning about its axis. krot = j compare your answer with the kinetic energy of the orbital motion of earth's center of mass about the sun. assume earth to be a homogeneous sphere of mass 6.00 1024 kg and radius 6.40 106 m. the radius of earth's orbit is 1.50 1011 m.

What are similarities and differences of reflection, refraction, diffraction and absorption?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form