How many top quark lifetimes have there been in the history of the universe (i. e., what is the age of the universe divided by the lifetime of a top quark) ? note that these powers of 10 follow the same rules that any exponents would follow?

Question

Physics

Mira Kerr

14 March, 02:51

How many top quark lifetimes have there been in the history of the universe (i. e., what is the age of the universe divided by the lifetime of a top quark) ? note that these powers of 10 follow the same rules that any exponents would follow?

+2

Answers (1)

Know the Answer?

Melissa Best · Answer 1

In order to solve this, we must know the life in years of the universe and a top quark in order to compare them. If you search in the internet, the age of the universe by order of magnitude is about 10²² seconds while a top quark (heaviest subatomic particle) is 10⁻¹⁸ seconds. Thus,

10²² years/10⁻¹⁸ = 10²²⁻⁻¹⁸ = 10⁴⁰

There would be a total of 10⁴⁰ top quark lifetimes over the age of the universe.