Предмет: Физика, автор: Аноним

На какую высоту нужно поднять кирпич массой 2,5 кг, чтобы его потенциальная энергия возросла на 19,2 Дж?

(Принятьg=9,8Нкг).

Ответ (результат округли до сотых): h=
м.

Ответы

Автор ответа: Аноним

Объяснение:

ДАНО :

m = 2,5 кг ;

Еп. = 19,2 Дж ;

g = 9,8 Н/кг

h - ?

Запишемо ф-му потенциальной энергии

En = mgh ,

h = En /mg.

h = 19,2 / 2,5 * 10 = 0,77 м

Автор ответа: Sserikbaev

Ответ:

На какую высоту нужно поднять кирпич массой 2,5 кг, чтобы его потенциальная энергия возросла на 19,2 Дж?

(Принятьg=9,8Нкг).

Ответ (результат округли до сотых): h=

м.

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ntroduction
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