How many kilograms of dry river sand is a cubic meter

How many kilograms of dry river sand is a cubic meter

Analysis: calculate the density of the river, because the density of the river is equal to the mass of the river / the volume of the river, and the volume is equal to V water V sand = (m water / ρ water) (M sand / ρ sand). Because m sand = m River water-m water, substituting m sand, m water can be obtained, So the mass of sediment in 1m ^ 3 River is called m-sand of 1000 times 1dm ^ 3. The solution of x0d is: m River = 10.15kg V River = 10dm ^ 3 = 0.01M ^ 3, x0d, ρ River = m river / V River = 10.15kg/0.01m ^ 3 = (1.015 × 10 ^ 3) kg / m ^ 3, and ρ River = molecule: m River denominator: (m water / ρ water) (m River-M water / ρ sand) x0d, ρ River = m river / V River = 10.15kg/0.01m ^ 3 = (1.015 × 10 ^ 3) kg / m ^ 3 = denominator: 10.15kg/ Molecule: (m water / 1.0 × 10 ^ 3kg / m ^ 3) (m River-M water / 2.5 × 10 ^ 3kg / m ^ 3) x 0d  m water ≈ 9.88 kg / X 0d 〉 m sand = m River water-m water ≈ 0.2 kg / X 0d 0.2kg × 1000 cubic decimeter / 10 cubic decimeter = 2kg / X 0d answer: the sediment content of river water is 2kg

How many kilograms is five cubic meters of sand

One cubic meter of sand is about 1500 kg, and five cubic meters is 7500 kg

The power a of 27 times the power B of 3 is equal to?

27 a times 3 B
=(3^3)^a*3^b
=3^(3a)*3^b
=3^(3a+b)