Q. 174.3( 11 Votes )

# Mass of earth is (5.97 x 10^{24}) kg and mass of moon is (7.35 x 10^{22}) kg. What is the total mass of the two?

Answer :

Given,

Mass of the earth = 5.97 × 10^{24} kg

Mass of the moon = 7.35 × 10^{22} kg

Now,

Mass of the earth = 5.97 × 10^{24} = 5.97 × 10^{(2+22)} = 5.97 × 10^{2} × 10^{22} = 597 × 10^{22}

So,

We can also Wright the mass of the earth as 597 × 10^{22} kg

Sum of the masses of the earth and the moon;

= (597 × 10^{22}) + (7.35 × 10^{22}) = (597+7.35) × 10^{22} = 604.35 × 10^{22} kg

= 6.0435 × 100 × 10^{22} = 6.0435 × 10^{2} × 10^{22} = 6.0435 × 10^{(2+22)} = 6.0435 × 10^{24} kg

Rate this question :

Write the following numbers in the usual form:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

(viii)

RD Sharma - MathematicsBy what number should 5^{-1} be multiplied so that the product may be equal to (-7)^{-1} ?

By what number should (-15)^{-1} be divided so that the quotient may be equal to (-5)^{-1}?

By what number should (-15)^{-1} be divided so that the quotient may be equal to (-5)^{-1} ?

By what number should be multiplied so that the product may be equal to ?

RD Sharma - MathematicsFind x, if

(i)

(ii)

(iii)

(iv)

(v)

(vi)

RD Sharma - Mathematics