The ptolemaic model of the universe describes the earth as

a. at the center, but moving relative to the other planets
b. at the center, stationary, with planets that rotate around it
c. orbiting around the sun with the other planets of our solar system
d. orbiting the moon, following the path of the sun

The Ptolemaic model of the universe describes the Earth as  being at the center, stationary, with the Sun, the Moon, other planets, stars, and EVERYTHING rotating around it. (B)

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

f=ma a/f/m a= 480/60 a = 8m/s/s that is quick wow