USAAAO 2015, Пробен кръг — Задача 11

USAAAO Practice Round 2015

Бележка

This round consists of 20 multiple-choice problems to be completed in 50 minutes. You may only use a scientific calculator and a table of constants during the test.

Условие

Two neutron stars, each with a mass of 3 solar masses, merge to form a black hole. Assuming no mass is lost, find the radius of the black hole.

a. 2.2 km

b. 4.4 km

c. 8.8 km

d. 17.7 km

e. $6.6 \times 10^{10}$ km

Отговори

Решение

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