Предмет: Физика, автор: saske5328

Скільки газу потрібно спалити, шоб отримати 92 МДж теплоти? Вважайте, що газ згорає повністю.

Помогите пожалуйста. ​

Ответы

Автор ответа: lnazik51
3

Дано:

Q= 92 МДж= 92×10⁶ Дж

q= 46× 10⁶ Дж/кг

___________________

m-?

Розв'язок:

Q= qm→ m= \frac{Q}{q}

m = \frac{92 \times {10}^{6} }{46 \times {10}^{6} } = 2кг

Відповідь: потрібно спалити 2 кг газу

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1. Скажите, какую роль играют металлы в жизни человека.
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The reason for the increased use of metals is to be found in their characteristic properties. The most important of these properties is their strength or ability to support weight without bending or breaking. Resistance to atmospheric destruction, plasticity and the ability to be formed into desired shapes are remarkable as well. Some metals have also special properties – two of which are the ability to conduct electric current and the ability to be magnetized.
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