At what height from the earth, g becomes
?
a)g/2
b) 0.414 r
d) r
c) 0.7 r

Explanation:

Near the surface of the Earth (sea level), gravity decreases with height such that linear extrapolation would give zero gravity at a height of one half of the Earth's radius - (9.8 m. s−2 per 3,200 km.)

gans

explanation:

vestigial organs (like your appendix) are organs that no longer serve a purpose.