Recall that if a line is parallel to the vector v and passes through the point P0, which is the tip of the position vector r0, t
hen the vector equation of the line is given by r(t) = r0 + tv. For the given line, we have r0 = 7, −8, 3 and v = 1, 6, − 1 3 . So the vector equation for this line is r(t) = 7, −8, 3 + t 1, 6, − 1 3 = .
During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. During this process, radiant energy is released.