3. Define volume of a substance. State its SI unit.
4. State two submultiples of SI unit of volume
and express their numerical values in SI unit.
5. Define density and give its SI unit.
6. Show experimentally that equal volumes of
different substances have different masses.
7. Give an activity to find the density of an
irregular solid which is heavier than water
and is insoluble in it.
8. Define speed and give its SI unit.
Answers
Answer:
3. The derived SI unit for volume is the cubic meter based on the three dimensional use of the base unit for length, the meter. The more common metric unit for volume is the liter.
So, the SI unite of volume is
=m3
4. Multiple....
Deca..=10
hecto....=100
Sub multiples....
Deci =1/10
Centi=1/100
5. Density of a substance is defined as mass per unit volume of the substance. If M is mass of a substance and V is volume of the substance. SI unit of density = kg / m3.
6. Equal volumes of different substances have different masses. For example, the mass of iron is much more than the mass of an equal volume of wood. This is because the particles of iron are more closely packed than those of the wood. to other words, iron is denser than wood.
7. One is by using a measuring cylinder, and the other one is by using an overflow jar. Measurement of volume of irregular solid bodies both heavier and lighter than water including those soluble in water, by displacement of water or other liquids in a measuring cylinder.
8.Speed can be thought of as the rate at which an object covers distance. ... Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour.
SI unit: m/s, m s−1
Dimension: L T−1