Define the following terms and state their SI unit?
(i) Volume.
(ii) Density.
(iii) Speed.
Answers
Answer:
2))))Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth's density is 5.51 grams per cubic centimetre. Density can also be expressed as kilograms per cubic metre (in metre-kilogram-second or SI units).
1))))The SI unit of volume is the cubic meter (m 3 ), which is the volume occupied by a cube that measures 1 m on each side. This very large volume is not very convenient for typical use in a chemistry laboratory. A liter (L) is the volume of a cube that measures 10 cm (1 dm) on each side.
3))))metre per second
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.
Answer:
1 ) the amount of space that something contains or fills. The SI unit of volume is the cubic meter (m 3 ),
2 ) the number of things or people in a place in relation to its area.The SI unit for density is: kilogram per cubic metre (kg/m3)
3 ) Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a given amount of time, while a slow-moving object covers a relatively small amount of distance in the same amount of time.The SI unit of speed is the metre per second