Question

6. Express the numbers appearing in the following statements in scientific notation:

(1) The earth has 1,353,000,000 cubic km of water.

(ii) The population of India was about 1,027,000,000 in March, 2001.


please urgent
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Answer 1

Answer:

(a) The distance between Earth and Moon is 384,000,000 m.

(b) Speed of light in vacuum is 300,000,000 m/s.

(c) Diameter of the Earth is 1,27,56,000 m.

d) Diameter of the Sun is 1,400,000,000 m.

(e) In a galaxy there are on an average 100,000,000,000 stars.

( The universe is estimated to be about 12,000,000,000 years old.

(9) The distance of the Sun from the centre of the Milky Way Galaxy is estimated to

be 300.000.000,000,000,000,000 m.

(h) 60,230,000,000,000,000,000,000 molecules are contained in a drop of water

weighing 1.8 gm.

) The earth has 1,353,000,000 cubic km of sea water.

The population of India was about 1,027,000,000 in March, 2001.

Answer 2

Step-by-step explanation:

1. Scientifically notation :

Very large or very small numbers can

be expressed in the simplest form by

using scientific notation.

In this notation any number can be

written as the product of a number x

such that

1 ≤ x < 10 and a power of 10 .

example :

i ) 6430000000 = 6.43 × 10^9

ii ) 0.0000000000003 = 2 × 10^-13

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Here ,

1353000000 cubic km

= 1353 × 10^6

= ( 1353/1000 ) × 10³ × 10^6

= 1.353 × 10^9 cubic km

2. The population of India =1,027,000,000

1027×1000000

=1.027×1000×1000000

$= 1 .027 \times {10}^{9}$