С какой силой взаимодействуют два заряда по 10 нКл, находящиеся на расстоянии 3 см друг от друга?

Вычислете более удобным способом:                                                             а) 2\11(две одиннадцатых)+3\8(три восьмых)+4\11(четыре одиннадцатых)+6\11(шесть одиннадцатых)+5\8(пять восьмых) т.е.2\11+3\8+4\11+6\11+5/8

complete these sentences using the verbs in brackets in passive 

in the 1970s new TV technologies (to develop)

a lot of TV programmes (to devote) to politics

in the future new tv stations (to build) in Russia

i am sure the best tv films (to show) next year

television (to use) for many purposes

the bbc (to know) ac the best non-commercial television system

television signal (to send) from a central source and (to receive by home tv sets

more and more people (to teach) witch the help of television in he future

our lives (to dominate) by television in the future

we hope that more good films (to watch) by young people

В окружность с радиусом 65 вписан прямоугольник, одна сторона которого больше другой в 2,4 раза. Найдите площадь прямоугольника.