- #1
You can make good use of the symmetry.GaussianSurface said:the second one I still confused.
The volume of a cube is calculated by multiplying the length, width, and height together. In this case, the length (L) is given as 2 meters, so the volume would be 2m x 2m x 2m = 8m^3.
To calculate the amount of copper cable needed, we first need to find the surface area of the cube. This is done by multiplying the length of one side by itself, then multiplying that by 6 (since a cube has 6 sides). In this case, the surface area would be 2m x 2m x 6 = 24m^2. Then, we can convert the surface area to square millimeters (mm^2) by multiplying by 1,000,000. So, the total amount of copper cable needed would be 24 million mm^2.
The resistance of a material is dependent on its length, cross-sectional area, and resistivity. In this case, the length (L) is given as 2 meters and the cross-sectional area is 2mm^2. The resistivity of copper is typically around 1.68 x 10^-8 ohm-meters. So, the resistance would be calculated as (1.68 x 10^-8 ohm-meters x 2m) / 2mm^2 = 3.36 x 10^-5 ohms.
The weight a cube can hold before breaking depends on several factors, such as the material strength and the distribution of weight. Without knowing these factors, it is difficult to determine an exact weight limit for this specific cube. However, copper is a relatively strong material and can typically withstand a significant amount of weight without breaking.
The material of an object can greatly affect its properties, such as its strength, electrical conductivity, and melting point. In the case of this copper cube, the material's high electrical conductivity makes it a good choice for applications involving electricity, but its relatively low melting point (around 1084.62 degrees Celsius) may limit its use in high-temperature environments.