Question

If
a dust particle has a mass of
7. 53 x 10-10
grams, find the weight
of 6 lakh dust particles.

​

Answer 1

$\bigstar$ Given :

• A dust particle has a mass of  7. 53 x 10⁻¹⁰  grams

$\bigstar$ To Find :

• The weight  of 6 lakh dust particles

$\bigstar$ Solution :

Mass of 1 dust particle = 7.53 * 10⁻¹⁰ g = 7.53 * 10⁻¹³ kg

We know that , " Weight is the product of mass and gravity "

So , the weight of 1 dust particle ,

$\implies \bf W=mg\\\\\implies \bf W=(7.53*10^{-13}*9.8)$

So the weight of such 6 lakh dust particles is ,

$\implies \bf W_{6\ lakh}=6,00,000*7.53*10^{-13}\\\\\implies \bf W_{6\ lakh}=6*7.53*10^{-8}\\\\\implies \bf W_{6\ lakh}=45.18*10^{-8}\ kg.m/s^2$

Answer 2

Answer:

As one dust particle weighs 7.53×10−10g, so the mass of 6 billion dust particles would be 7.53×10−10g multiplied by 6 billion. And then we will have the mass of 6 billion dust particles