Предмет: Физика, автор: slepuhinaanna

Какой заряд пройдет по проводнику, если в течение t = 10 с сила тока равномерно уменьшилась от J0 = 10 А до J = 5 А?

Ответы

Автор ответа: MashaPutnaj

дано I1=10А I2=5 А t=10 с Q- ?

Q=Iср*t = (I1+I2)*t/2=(10+5)*10/2=75 Кл

Ответ Q=75 Кл

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People all over the world are fond of sports and games. Sport makes people healthy, keeps them fil, more organised and better disciplined. It unites people of different classes and nationalities. Many people do sports on their personal initiative. They go in for skiing, skating, table tennis, swimming, volleyball, football, basketdall, body-building etc.

All necessary facilities are provided for them: stadiums, sport swimming pools, skating-rinks. football fields. But, of course, one has to pay for there services.

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And now a few words about our physical training lessons at school. In summer they are held out-of-doors. When it is cold outside the lessons are held indoors in our school gymnasium.

Professional sport is also paid much attention to in our country in the city where I live. there are different sport societies, clubs and sport schools. Practically all kinds of sports are popular in our country, but gymnastics and tennis enjoy the greatest popularity.

The most popular kinds of sports in the United States are baseball, dasketball and American football. In England the popular kinds of sports are golf and rugby. Englishmen like football too. It is their national kind of sports.

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5. What kinds of sport are the most popular in our country?

6. What are the most popular kinds of sport in America and England?

7. What other American or English sports do you know?

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