A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. Which one has the greater buoyant force on it?
A) the aluminum
B) the lead
C) Both have the same buoyant force.
D) It cannot be determined without knowing their volumes.
Question 2
A person uses corrective glasses of power -8.5 D that are worn 2.0 cm from her eye.
(a) Is she nearsighted or farsighted?
(b) What is her far point without glasses?
What will be an ideal response?
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