Two equal-mass pieces of metal are sitting side by side at the bottom of a deep lake. one piece is aluminum and the other is lead.

part a
which piece has the greater buoyant force acting on it?

a. the aluminum
b. the lead
c. they both have the same buoyant force acting on them.

A. Aluminium

Explanation:

Buoyant force is  simple terms refers to the weight of water displaced when an object is immersed in it. The higher the volume of an object, the higher the buoyant force.

From the problem, we have two metals of equal mass, aluminium and lead, of which lead is denser.

density =

Volume =

This means that the volume of each metal depends on the density, and for the fact that lead is denser , it will have a lower volume than aluminium which means Aluminium will have a greater buoyant force.

d. platinum would have the greatest temperature increase because it has the lowest specific heat.