1. A dust particle weighs 6.7* 10^-19 kg. How many such dust particles would weigh 6.7 kg

 

2.What is the effect of the accleration of a particle if the net force of the particle is doubled.

1.

One dust particle weighs = 6.7 * 10^-19kg.

Let the number of dust particles = x

Therefore,

x = 6.7 / 6.7 * 10^-19= 10¹⁹

 

2.

F=m a

a = F / m

If F = 2F, then the acceleration of the particle is doubled.

Therefore, the acceleration of the particle should double if the net force doubles.