A platinum sphere with radius $0\mathrm{.}0157$ m is totally immersed in mercury.

The densities of platinum and mercury are $2\mathrm{.}14$ x $104$ kg$/$m$?$ and $1\mathrm{.}36$ x $104$ kg$/$m$?,$ respectively.

What is the weight W of the sphere?

W $=$

What is the buyoant force B acting on the sphere?

B $=$

What is the sphere's apparent weight Wapp?

Wapp $=$

N

N

N