Physics is explicitly involved in studying which of these activities?
a.) the mixing of metals to form an alloy
b.) the metabolic functions of a living organism
c.) the motion of a spacecraft under gravitational influence
d.) the depletion of the atmospheric ozone layer due to pollutants
e.) the killing of cancerous cells by radiation therapy

Option (C)

Explanation:

Physics is the study of measurement of different physical quantities.

The motion of a spacecraft under the gravitational influence, is due to the several forces acting on spacecraft.

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.