Предмет: Физика, автор: AlKim2008

Помогите пж.
Какое количество теплоты необходимо для нагревания железного утюга массой 2 кг от 20⁰С до 320 °С?

Ответы

Автор ответа: gon62993

1

Ответ:

Q = cm(t1-t2) = 444*2*300 = 266400Дж

AlKim2008: ладно..

AlKim2008: и тебе спасибо..

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: d80464640

1. What is the oldest place in your hometown?

1 год назад

Предмет: Английский язык, автор: ademabegen065

Нужно короткие объяснения
49 Days in the Ocean

On the 17th January, 1960, a terrible storm broke out in the Kurils. A Soviet barge was carried out to sea with four men on board. Boats and planes were sent to look for the barge, but they were unable to see it among the high. waves.

The men on the barge were in great danger. They were

doing their best to approach the shore but it was impos-

346

sible. The weather was terrible, the wind did not stop blo- wing for one second, the sky was covered with dark clouds, and it was raining so hard that they could hardly see any thing round them. The men on board heard the voice of the radio calling out to them, but they were unable to answer because something had gone wrong with their own radio- set.

When the storm calmed down, they saw that the waves had swept away almost all their food and fresh water, and that they were quite alone in the open sea.

On the 23rd February they were so weak that they could only lie still side by side, but they made up their minds to celebrate their holiday, Soviet Army Day. The one who was on duty that day took their last cigarette. out of the box and they smoked it in turn.

On the forty-ninth day they heard a noise in the dis- tance. It was an American plane. The pilot noticed them, and the four brave soldiers were soon out of danger on board an American ship. The sailors who had saved them were surprised to see that after all their misfortunes, these four young Soviet men had remained true friends, always doing their best to help each other. Soon the heroes were brought back to the Soviet Union.

Their names became known all over the world

1 год назад

Предмет: Геометрия, автор: viktoria2487

Пожалуйста решите , спасибо большое

1 год назад

Предмет: Русский язык, автор: Аноним

Помогите это упражнение пожалуйста 15 баллов дам

6 лет назад

Предмет: Русский язык, автор: akniet77020

Мне нужен антоним. Слово: разной

6 лет назад