Предмет: Физика, автор: sofiadzhioevasd1234

5. Над тілом виконали роботу 100 Дж, внаслідок чого його внутрішня енергія змінилася на 217 Дж. Яку кількість теплоти передали тілу?

Ответы

Автор ответа: Idzuki

Ответ:

117 Дж.

Объяснение:

217 - 100 = 117 Джоулів

IUV: задание имеет 2 ответа

IUV: в условии не сказано, увеличилась или уменьшилась внутренняя энергия. просто сказано что изменилась на 217

sofiadzhioevasd1234: а за какой формулой

Автор ответа: IUV

Ответ:

Объяснение:

Q=A+ΔU

Q - теплота переданая телу

расходуется на выполнение телом работы А

и на изменение внутренней энергии тела ΔU

в данном случае работу выполняет не тело а работу выполняют над телом, поэтому А=-100 Дж

ΔU = 217 Дж или ΔU =-217 Дж

Q=A+ΔU=-100+217=117 Дж

или Q=A+ΔU=-100-217=-317 Дж

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