[填空题]
A piece of aluminum with a mas07u j /exl eug2yq;gu/s of 1.0 kg and density ofq: lf/zz m6 q9f2ik-ju $2700 \; kg/m^{3}$ 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)
