In autumn the wind is cold and strong,in summer it isn't cold and strong
in autumn trees are red and yellow,in summer aren't red and yellow
in Autumn School Children are at school,in summer School Children aren't at school
My granny lives in a village,there she has dogs,cats(to catch mice and rats),two bulls,a cow,sheep,rabbits and geese,ducks,a cock,chickens and chicks.Her sheep are white.She loves her geese.She is scared of mice.In summer we eat much fruit,this year it is cheap.My granny always gives me good advices and she knows many adages such like "lack of news-good news","wisdom is the force".She looks young for her years,her hair is not grey,but dark blond.
Her clothes are always not very old.Her jeans are colourful,she has modern glasses.She is kind and pretty.Children in village love her very much.
Q1+Q2=0 (уравнение теплового баланса)
Q1= cmt (естественно вода, где за t я взял изменённую температуру, то что нам надо найти. c- постоянная величина, которую я взял из источника, m - в дано (: )
Q2= cmt (Тоже самое, только с гирей).
Итак.
Приравниваем получается (пишу без физических величин, т.к. вы и сами их сможете написать) P.s. перевод в систему СИ я показывать не буду.
0,6*4200*t+0,5* (20-80)*380=0
2520*t+(10-40)*380=0
2520t=15200-3800 (перенёс - знак поменял, получаем:)
2520*t=11400
<span>t=4,5 градуса (примерно)</span>
2) is, them.
3) is.
4) is, them.
5) is, it, is.
6) it, is.
7) are, them.
8) is, was, it.
1/ Does he prefer to drive or walk to his office ?
2/ Do they usually go to the pictures or to the theathe in the evening?
3/ Does he live a long way or near from the centre?
4/ Does she usually get up at 5 or 6 o'clock?
5/ Do they get up early on weekdays or weekends?
<span>6/ Do they usually dine at home or in the restaurant? </span>
