Предмет: Физика, автор: blooo

 

Сколько надо сжечь керосина чтобы вскипятить 22 кг воды, взятой при 20 градусах? Считать, что вся теплота, полученная при сгорании керосина, пойдет на нагревание воды. Ну очееень надо, помогитее)

 

 

Ответы

Автор ответа: ФИЗМАТик
0

Qполуч=Qотд

cm(в)Δt=qm(к)

m(к)=(cm(в)Δt)/q

m(к)=(4200Дж/кг*С · 22кг · 80С)/46 000 000Дж/кг 

m(к)=0,16кг

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Task 25. Read the text below and choose the best option from: A, B, C, or D.
YOUNG PEOPLE AND EMPLOYMENT
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