In the cells of the human body oxygen molecules are used directly in a process that?

Ways that industry and agriculture use physical properties to separate substances

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.

What happens when the number of protons in an atom changes