(71)
The gravitational pull of the Moon on the satellite
Gravitational pull of the Sun on the satellite
The rocket engine attached to the satellite
The gravitational pull of the Earth on the satellite
(72)
The coulomb’s force
Gravitational force
The force of friction
Centrifugal force
(73)
120 days
100 days
70 days
60 days
(74)
Skull
Brain
Limbs
None
(75)
mercury
Neptune
Pluto
Uranus
(76)
Ampere
Ampere
Coulumb
Volt
(77)
Shorter
shortest
Longer
Longest
(78)
concave
diverging
convex
None
(79)
Hair fall
Scurvy
Nightblindness
Rickets
(80)
1 g/cm3
2 g/cm3
1.5 g/cm3
none