Verified answer

Answer:

13.34 × 10⁻²² N

Explanation:

Given:-

M = 20mg = 20 × 10⁻⁶ Kg

d = 2mm = 2 × 10⁻³ m

Let F be the force of attraction between 2 objects. Then,

F = GMM/d²

F = 6.67 × 10⁻¹¹ × 20 × 10⁻⁶ × 20 × 10⁻⁶ / 2 × 10⁻³

F = 667 × 10⁻¹¹ × 20 × 10⁻⁶ ×  20 × 10⁻⁶ / 200 × 10⁻³

F = 1334 × 10⁻¹¹ × 10⁻⁶ ×  10⁻⁶ / 10⁻³

F = 1334 × 10⁻²⁰ = 13.34 × 10⁻²² N

The force of attraction between 2 objects is 13.34 × 10⁻²² N