One cubic centimeter (1.0 cm3) of water has a mass of 1.0 10-3kg. (a) Determine

Question

One cubic centimeter (1.0 cm3) of water has a mass of 1.0 10-3kg.
(a) Determine the mass of 1.0 m3 of water.
_______ kg

(b) Assuming biological substances are 98% water, estimate themasses of a cell with a diameter of 0.60 µm, a human kidney,and a fly. Take a kidney to be roughly a sphere with a radius of3.7 cm and a fly to be roughly a cylinder 5.0 mm long and 1.8 mm indiameter. (Type your answer using one of the following formats,1.2e-3 for 0.0012 and 1.20e+2 for 120.)
cell: ______kg
kidney:_____ kg
fly: ______ kg

Explanation / Answer

  (a)             The mass of water is for1.0cm3 is 10-3 kg         Then the density is = 10-3 kg / 1.0cm3 =10-3 kg / cm3 = 1000 kg/m3         Then the mass of1.0m3 water is  M =  1000 kg/m3 *1.0m3 = 1000 kg ( since density = mass / volume )         Then the mass of1.0m3 water is  M =  1000 kg/m3 *1.0m3 = 1000 kg ( since density = mass / volume )

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