USAAAO 2015, I кръг — Задача 15

USAAAO First Round 2015

Условие

Star A has a radius that is 2 times larger than the radius of star B, and a surface temperature that is 2 times smaller than the surface temperature of star B. Therefore, star A is
a. 4 times more luminous than star B.
b. 16 times less luminous than star B.
c. 16 times more luminous than star B.
d. as luminous as star B.
e. 4 times less luminous than star B.

Отговори

Решение

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