A hollow aluminum ball with a mass of 270g Put into the water suspension, find: 1, aluminum ball received buoyancy 2. The total volume of hollow aluminum spheres 3. The volume of the solid part of the aluminum ball What is the buoyancy of putting a solid aluminum block with a volume of 0.02m3 into mercury Ask less

A hollow aluminum ball with a mass of 270g Put into the water suspension, find: 1, aluminum ball received buoyancy 2. The total volume of hollow aluminum spheres 3. The volume of the solid part of the aluminum ball What is the buoyancy of putting a solid aluminum block with a volume of 0.02m3 into mercury Ask less

1) Suspension, buoyancy f = gravity mg = 270g * 10N / 1000g = 2.7n2) buoyancy f = P water * V row * g total volume v = V row = f / (P water * g) = 2.7N / [(1kg / DM ^ 3 (* (10N / kg)] = 0.27dm ^ 3 = 270cm ^ 33) volume of solid part VO = m / p aluminum = 270g / (2.7g / cm ^ 3) = 100cm ^ 3 density of aluminum

The mass of a hollow aluminum ball is 27g. After the hollow part is filled with alcohol, the total mass is 43g?
PA = 2.7x10 cubic kg / m3, PA = 0.8x10 cubic kg / m3

Volume of aluminum in aluminum ball:
V al = m Al / ρ al = 0.027kg/2700kg/m and#179; = 0.00001m and#179;
The volume of the hollow part is the volume of alcohol
V air = V wine = m wine / ρ wine = (0.043kg-0.027kg) / 800kg / M & # 179; = 0.00002m & # 179;
The volume of aluminum ball: V ball = V aluminum + V air = 0.00001m & # 179; + 0.00002m & # 179; = 0.00003m & # 179;
A: the volume of aluminum ball is 0.00003m

The mass of a hollow aluminum sphere is 27g. After the hollow part is filled with alcohol, the total mass of the hollow part is 48g (ρ alcohol = 0.8 × 103kg / m3, ρ aluminum = 2.7 × 103kg / m3)

The mass of alcohol m alcohol = m total - M aluminum = 48g-27g = 21g; the volume of alcohol is the volume of hollow part V air = m alcohol ρ alcohol = 21g0.8g/cm3 = 26.25cm3; the volume of aluminum ball is solid V solid = m aluminum V aluminum = 27g2.7g/cm3 = 10cm3; the volume of aluminum ball is V air + V solid = 26.25cm3 + 10cm3 = 36.25cm3