If there are two metals A and B, the ratio of the density of a to that of B is 2:5, and the ratio of the mass of a to that of B is 1:2, then the volume of a is the volume of B______ ．

If there are two metals A and B, the ratio of the density of a to that of B is 2:5, and the ratio of the mass of a to that of B is 1:2, then the volume of a is the volume of B______ ．

According to v = m ρ, v a v b = m a ρ a m b ρ B = m a m b × ρ B ρ a = 12 × 52 = 54 = 1.25

There is an iceberg floating on the water surface. The volume of the road above the water surface is 1000 m2. What is the mass of this iceberg? The density of ice is 900 kg / m3

P ice = 0.9 × 10 ^ 3kg / M & # 179; = 0.9g/cm & # 179;
Pwater = 1 × 10 ^ 3kg / M & # 179; = 1g / cm & # 179;
Iceberg floating
F = g ice
P water GV row = P ice V ice G
Ψ V row / V ice = P ice / P water = 0.9 / 1 = 9 / 10
Ψ V / V ice = 1 / 10
｛ V ice = 10V upper = 10 × 1000 = 10000m & ｛ 179;
M ice = P ice V ice = 900 × 10000 = 9 × 10 ^ 6 (kg)
A: slightly

1. For a piece of floating ice floating in the sea, the volume exposed to the sea is 20m3, and the actual volume of the ice (ice density 850kg / m3) can be calculated

(20 + V) * 850 * g = V * 1000 * G

How to calculate the dosage of 1 cubic meter plastering mortar sand
If the plastering area of the interior wall is 1000 square meters and the thickness is 2 cm, and the mortar mix ratio is 1:3.1 cubic meters, how much sand is there in the mortar?

In the building mortar mix proportion manual, it is calculated according to 1510kg / m3 of coarse sand, 1450kg / m3 of medium sand and 1390kg / m3 of fine sand. The plastering thickness is 2cm. As long as you plan to use 2 cubic sand per 100 square meters, one cubic sand is still needed for one cubic mortar, and the difference is not big

How to understand "the amount of sand in every cubic meter of mortar should be in dry state (moisture content)

The basis for calculating the weight of sand during material preparation

How to calculate the water content of sand

The mass of water divided by the mass of dry sand multiplied by 100%

What's the density of the stone?

Marble is generally 2.2.7g/cm3;
Granite generally in 2.3.0 grams per cubic centimeter;
Limestone is generally 2.2.8g/cm3;
Slate is generally 2.2.9g/cm3

A volume liter with a mass of 6.2kg and a volume of 10L is put into the stone until it is full, and the total mass is 21.3kg. Calculate the bulk density of the stone

(21.3-6.2) / 0.01 = 1510 kg / m3

A stone wrapped in ice is put into a measuring cylinder with a bottom area of 10 square centimeters. It is still at a certain place, and there is no water overflow. The liquid level of the measuring cylinder rises by 4.6 cm. When the ice melts, the water level drops by 0.44 cm again?

If the volume of ice is V, then 0.9V = 1.0 (v-4.4) v = 44cm & sup3; M1 = 44 * 0.9 = 39.6g; V1 = 39.6 / 1.0 = 39.6cm & sup3; M2 = 46-39.6 = 6.4g

When measuring the density of stone, measure it first______ , post measurement_______ , rock density ρ=______ .
When measuring the density of stone, measure it first______ , post measurement_______ , rock density ρ=_______ When measuring the density of brine, measure it first_______ , post measurement________ Brine density ρ=_______ .

Mass, volume, mass / volume