USAAAO 2015, I кръг — Задача 18

USAAAO First Round 2015

Условие

A type Ia supernova was observed in a galaxy with a redshift of 0.03. The supernova was determined to be $1.3 \times 10^8$ pc away from Earth. Determine the Hubble time using this observation.
a. $1.41 \times 10^{10}$ years
b. $1.41 \times 10^{10}$ seconds
c. $1.33 \times 10^{9}$ years
d. 47.1 years
e. $1.33 \times 10^{9}$ seconds

Отговори

Решение

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Оригинал в Архива: 2015-first-round-exam.pdf · официални решения: 2015-first-round-solutions.pdf