Anasa scientist studies a moon rock whose mass is 9.30 kg and finds that it has an apparent mass of 6.30 kg when submerged in water.

This means the buoyancy or upward force is 3kg. Mass - buoyancy = apparent mass so 9.3 kg - 3 kg = 6 kg

Nah i’m goody that’s a good question tho

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.