Вопрос школьника по предмету Физика
Рассказ о мощности по физике.
Ответ учителя по предмету Физика
Мощность-физическая величина равная в общем случае скорости изменения, преобразования, передачи или потребления энергии системы. Обычно мощность обозначается буквой N. В электротехнике обозначается P. В отдельных случаях обозначается W(watt). Используют приборы для измерения мощности-ваттметры, фазометры.
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The dust
Mr. White was siting on a train which was travelling from Glasgow to London. The
train was quite empty and quiet so Mr. White was finding the journey enjoyable and
relaxing.
At Birmingham, a man with a long beard got into the train. He looked a little
He had pink trousers, a yellow shirt with, a green tie, a silver hat. orange socks and
bright red shoes,
After a few minutes (he man opened a small brown bag and took out some fine white
lt looked like chalk dust. He started to throw the powder around the railway
carriage, He was doing it for five minutes, Then he smiled to himself and sat down.
Mr. White continued to ignore the man. However the man kept scattering his powder
around the carriage every twenty minutes, and this began to irritate
Two. hours later he asked angrily, Excuse me but what are you doing?
The man stopped throwing the white powder and said,
Look in my bag: sir. This powder is not ordinary
special, rare and expensive. In an irritated vol
are you throwing it around this railway carriage?
Ah. said the man, By sprinkling it around the carriage l an keeping all the tigers
Mr. White was astonished. How anybody could be so stupid, he thought to,
himself: He protested to the man, But there are no tigers arou
*oh, it proves that the powder is very good
the man said w