Suppose the initial kinetic energy and final potential energy in an experiment are both zero. What can you conclude?
A. The final kinetic energy is zero.
B. The initial potential energy is zero.
C. The final kinetic energy is equal to the initial potential energy.
D. The sum of the initial and final kinetic energies is zero.

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

2) the sun is wonderful source of energy. it is renewable and natural with few dangers. solar cells rely on the sun for energy. these cells would be more practical to use if they were