The mass ratio and volume ratio of solid lead and copper blocks of equal weight are, the ratio of buoyancy received when they are put into water is, and the ratio of buoyancy received when they are put into mercury is

The mass ratio and volume ratio of solid lead and copper blocks of equal weight are, the ratio of buoyancy received when they are put into water is, and the ratio of buoyancy received when they are put into mercury is

Equal weight mass ratio 1:1
Reciprocal of volume specific density ratio (M = ρ V) ρ Pb 11.3 ρ Cu 8.9
89：113
If you put it in water, it will sink to the bottom, f floating = ρ water GV row V row = v
The Foley ratio is 89:113 by volume
Floating in mercury V lead bar: V copper bar = ρ lead: 3 ρ copper = 113:89
F floating 2 = ρ mercury GV row buoyancy ratio is equal to V lead: V copper = 113:89
If you don't understand, you can send me a system message

An empty metal ball is 19.6n in weight and 5dm3 in volume. If the ball is immersed in water, the buoyancy of the ball is () n,
The volume immersed in water is () DM3
The answer to the last question is 2n. The reason is hollow ball

Answer: floating, 19.6n, 2DM and 179;
Analysis:
Mass of ball: M = g / g = 19.6 / 9.8 = 2kg
Density: ρ = m / v = 2 / 0.005 = 400kg / M & # 179;

At present, there are 10kg mercury in 200ml bottles. How many bottles do you need?

The density of mercury at normal temperature (20 ℃) is 13.6 g / cm ^ 3
According to the formula: M = PV
M = 10000 g, P = 13.6g/cm
v=m/p=735.294cm^3
1ml=1cm^3
735.294cm ^ 3 / 200ml = 3.67, that is 4 bottles

How many bottles are needed to extract 10 kg of mercury in 0.2 l bottles?

The density of mercury is 13.6g/cm3
10kg=10000g
Mercury volume 10000 / 13.6 = 735.3cm3 = 0.7353dm3
Bottle size 0.2L = 0.2dm3
So we need four bottles

A bottle can hold 1kg water. How many kg mercury can the bottle hold? (mercury density = 13.6 × 10 ^ 3kg / m3)

Solution: because a bottle is used to hold different liquids, the volume of these liquids is the same, which is the volume of the bottle
V = m water / P water = m mercury / P mercury
So: m mercury = m water * P mercury / P water = 1 * 13.6 = 13.6 kg

Baidu asked: the density of mercury is 13.6 * 1000kg / m3, which requires 10g of mercury. How many does it take to pack it in a 200 cubic centimeter bottle?

m=10g
ρ = 13.6 * 1000 kg / m3 = 13.6 g / cm3
V = m / ρ = 10g △ 13.6g/cm3
=0.735 cm3
0.735 cm3 < 200 cm3
A: just a 200 cubic centimeter bottle
The "Nanbu Beige" upstairs has no unit
Believe me, I've never scored lower than 96 on science exams

The density of mercury is 13.6 * 1000kg / m3. What is its physical meaning?

The mass of mercury per cubic meter is 13600 kg. Remember it's mass, not weight

Workshop workers need to get 5kg of mercury. How many bottles do they need to use if they use bottles with a volume of 200cm?
ρ mercury = 13.6 × 10 & # 179; kg / M & # 179;

Mercury volume v = m / P = 5000g / (13.6g / cm ^ 3) = 367.7cm ^ 3
367.7/200=1.8
Two bottles, please

Which has the highest density and which has the lowest density?
If you don't know, please don't talk nonsense, I have been misled!

The maximum of lead is the minimum of aluminum

Density of solid lead and liquid lead density of solid tin and liquid tin

Solid lead 11.34
Liquid lead
Solid tin: white tin 7.28 g / cm3, gray tin 5.75 g / cm3, brittle tin 6.52 ~ 6.56 g / cm3
Liquid tin