Question

В паспорте электрического утюга написано 220В 600Вт Какое количество теплоты выделится в утюге за 2 ч работы при напряжении в сети 220 в

Answer 1

За 2 часа утюг потребляет 1200 вт  а 1 Ватт-час = 3600 Дж надо 1200 * на 3600= 4320 к дж
если необходимо перевести в кал то 1кал  = 4,2 дж

Answer 2

Calculating Heat Generated by an Electric Iron

To calculate the amount of heat generated by the electric iron, we can use the formula:

Heat (in joules) = Power (in watts) × Time (in seconds)

Given: - Voltage (V) = 220V - Power (P) = 600W - Time (t) = 2 hours = 7200 seconds (1 hour = 3600 seconds)

Calculation

Using the formula, we can calculate the heat generated by the electric iron over 2 hours of operation:

Heat = Power × Time

Heat = 600W × 7200s

Now, let's calculate the heat generated.

Heat = 600W × 7200s = 4320000 joules

So, the amount of heat generated by the electric iron over 2 hours of operation at a voltage of 220V is 4320000 joules.