Предмет: Физика, автор: ArtKuchniruk2009

На спиртівці нагріли 175 г води від 18 °С до 58 °С. Початкова маса спиртівки зі спиртом 153 г, а після закінчення нагрівання — 146 г. Знайди ККД нагрівальної установки: qс = 27 МДж/кг, св = 4200 Дж/(кг°С).

Ответы

Автор ответа: avramenkon161
1

Ответ:

15,6

Объяснение:

привет с оптимы


veranikabelegova: объяснение..
lavrinchukm: так ето правильно или нет?
Интересные вопросы
Предмет: Английский язык, автор: gggtygg35
Task 1 - Check your understanding: true or false
1. Lunch is served for two hours only.
2. Dinner starts at 2:30pm.
3. Bread and butter comes free with the starters.
4. The snacks are available for lunch and dinner.
5. If you order a snack the salad and chips cost extra.
6. There are three flavours of ice cream.
Task 2 - Check your understanding: gap fill.Complete the gaps with the
correct word from the box.
Italian Thai French English Irish German
1______________________ onion soup 4______________________ tea
2______________________ sausage 5______________ cream coffee
3_____________________ chicken and rice 6_____________________ pizza

Task 3 - Check your understanding: recommendations
Recommend and write a dish or drink for these customers on the line below.

Grilled Fish and Potatoes Tomato Salad Vegetable Pasta
Mineral Water Cheese Biscuits Chicken Sandwich

1. ____________I want a main course but I only have £5 and I don’t like cheese.
What do you suggest?
2. ____________ I’m a vegetarian and I want a starter but I don’t like soup. What
starter should I choose?
3. __________________I really love seafood. Which main course do you suggest?
4._________I want a dessert but I don’t like sweet things. What can I choose?
5. ______ I don’t like eggs or cheese and I only have £4. What snack can I choose?

6. _____ It’s a really hot day and I need a cold drink. I only have £1, though. What can I have?
Task 4 - discuss and write
What would you order from this menu?
What type of food do restaurants in your country have?