Предмет: Физика, автор: masterovol

электродвигатель за 1минуту произвел работу 120 кДж. вычислите мощность электродвигатель

Ответы

Автор ответа: physicX

Легко
Дано:
А=120 кДж
t=1 мин
N-?
Си:
120 кДж=120 000 Дж
1 мин=60 сек
Решение:
N=A/t
N=120000 Дж /60 сек
N=2000 Вт или 2 кВт
Ответ:2000 Вт

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"I usually get up at about 8 o'clock. Then I have breakfast – coffee or tea and some toasts. After this I go down to the library and read the paper. There are a lot of us at the library. We never say we are unemployed but we know. I look at all the possible jobs in the papers (This takes about a minute!). I read the sports and the arts pages, and soon it is time for lunch, so I go off down to the shops for bread, milk, fresh vegetables and 25 pence worth of cheese. I like shopping, and I like cooking now too. On the way back from the shops I buy a local paper and look at the jobs advertisements over lunch (soup and bread and butter).

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11. What …? I go for a walk or read.
12. When …? At about six.
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