Question

The diameter of a pearl is about 4 x 10-3cm and the diameter of an atom is about10-11m. How much larger than an atom is a pearl?Show your work.

a)14x 10∧-14times b) 4 x 10 ∧-14timesc) 14x 10∧-11times d) 4 x 10∧6times

Answer 1

• D. 4 × 10⁶ times

Explanation:

The diameter of a pearl is

• 4 × 10⁻³cm = 4 × 10⁻⁵ m

The diameter of an atom is

• 10⁻¹¹m

How much larger than an atom is a pearl?

• 4 × 10⁻⁵ ÷ 10⁻¹¹ = 4 × 10⁻⁵⁺¹¹ = 4 × 10⁶ times

Correct option is D