[填空题]
A piece of aluminum wit 0l wkmbqhggo8(-g 1g* q,f/feh a09*k cfbljru2m +-+gm; s oeqh mass of 1.0 kg and density of $2700 \; kg/m^{3}$ is suspended from a string and then completely immersed in a container of water. The density of water is $1000 \; kg/m^{3}$. (a) Determine the volume of the piece of aluminum $\times 10^{-4} \; m^3$ (fill in numerical value only) (b) Determine the tension in the string after the metal is immersed in the container of water $N$ (fill in numerical value only)
