IOM 2018, Блиц, английски — Задача 51

OLYMPIAD OF METROPOLISES. Moscow, September 3 · 3 септември 2018 г.

Условие

By how many times does the cross–sectional area S2S_2 of a vertical stream of water at a height h=5h = 5 m differ from the cross-sectional area S1S_1 of the hose outlet? The speed of water at the outlet is v0=15.8v_0 = 15.8 m/s.

The answer should be given in the SI units unless otherwise stated. If the numerical result turns out to be an integer, it should be given as the answer. Otherwise round the result to the first decimal. g=10 m/s2g = 10\ \mathrm{m/s^2}.

Отговори

Решение

Оригинал в Архива: blitz.pdf · официални решения: blitz-answers.pdf