Предмет: Физика, автор: mimiimimimmi

Очень прошууу!!

Условие задания: 9 Б.
Какова кинетическая энергия частицы метеорита, если её масса составляет 9 г, и в атмосферу Земли она влетает со скоростью 73 км/с?

Ответ (округли до целого числа): кинетическая энергия частицы метеорита равна МДж.
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Ответы

Автор ответа: IgRoNoV

24МДж

Объяснение:

Eк=mv²/2

9г=0.009кг

73км/с=73000м/с

Eк=0.009г×(73000м/с)²/2

Eк=23980500≈24МДж

mimiimimimmi: спасибо огромное

IgRoNoV: ага

Автор ответа: zaya07032519

Ответ:

Дано:

m=9г

u=73км/с

Найти:

K-?

СИ:

9г

73км/с= 73000м/с

Решение:

K=mu²/2

K=9г×(73000)²м/с/2=23980500000Дж

Ответ:23980500000Дж

Объяснение:

я не помню как округлять

IgRoNoV: 9г нужно перевести в кг

zaya07032519: а пон

zaya07032519: можешь помочь ?

IgRoNoV: что именно?

zaya07032519: по русскому

zaya07032519: зайди в мой профиль увидишь

IgRoNoV: не сори, я этом не шарю

zaya07032519: жаль:(

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Militia of the Republic of Belarus
(1) The first militia forces in Belarus were created in 1917. The Militia of the Republic of Belarus, which comes under the authority of the Ministry of Internal Affairs, has a wide range of activity. Its activity is regu-lated by the Law on Militia of the Republic of Belarus, adopted in 1991, and amended several twice.
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