A Cepheid variable star has an apparent brightness of 85 and a period of 14.3 days. This means the star is 85 times brighter than the Sun would appear at a distance of 1 Megaparsec. About how far away is this star?

The best answer i can think of is b

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.

Phagocytes contain digestive enzymes to facilitate the process of phagocytosis