Advertisements
Advertisements
Question
What is the density of a substance of mass 100 g and volume 10 cm3 ?
Solution
ρ (density) = ?
V (volume) = 10 cm3
m (mass) = 100 g
=
ρ = 10
Answer: Density of the substance = 10g/cm3.
APPEARS IN
RELATED QUESTIONS
What is the mass of 5 m3 of cement of density 3000 kg/m3 ?
Calculate the density of an object of volume 3 m3 and mass 9 kg. State whether this object will float or sink in water. Give reason for your answer.
5 kg of material A occupy 20 cm3 whereas 20 kg of materia! B occupy 90 cm3. Which has the greater density : A or B ? Support your answer with calculations.
A body floats in kerosene of density 0.8 x 103 kg/m3 up to a certain mark. If the same body is placed in water of density 1.0 x 103 kg/m3, will it sink more or less ? Give reason for your answer.
When a golf ball is lowered into a measuring cylinder containing water, the water level rises by 30 cm3 when the ball is completely submerged. If the mass of ball in air is 33 g, find its density.
A piece of steel has a volume of 12 cm3, and a mass of 96 g. What is its density in kg/m3 ?
A solid of density 900 kg/m3 floats in oil as shown in the given diagram. The oil floats on water of density 1000 kg/m3 as shown. The density of oil kg/m3 could be :
Why is it easier to swim in seawater than in river water?
Calculate the average density of the earth in terms of g, G and R
A cube of side 5 cm is immersed in water and then in a saturated salt solution. In which case will it experience a greater buoyant force. If each side of the cube is reduced to 4 cm and then immersed in water, what will be the effect on the buoyant force experienced by the cube as compared to the first case for water. Give a reason for each case.
