Question

1. (a) What do you understand by the term order of magnitude of a quantity?
(b) Why are physical quantities expressed in the order of magnitude? Support your answer by an example.
2. Express the order of magnitude of the following quantities:
(i) 12578935 m
(ii) 222444888 kg
[(i) 107 m [(ii) 108 kg
(iii) 0.000,000,127 s
(iv) 0,000,000,000,00027 m
(iii) 10 -'s (iv) 10-13 m)
3. (a) What do you understand by the term degree of accuracy?
(b) Amongst the various physical measurements recorded in an experiment, which physical measurement
determines the degree of accuracy?​

Answer 1

Explanation:

Physical quantities are expressed in the scientific notation, that is the order of magnitude because: It is an easier representation since physical quantities can have very high values as well as very low values. Ease of calculation is possible when the quantity is represented by order of magnitude