Удельная теплота плавления свинца 0, 25 • 105 дж/кг. это значит, что для плавления энергии. а) свинца массой 1 кг требуется 0, 25 i05 дж. б) свинца массой 1 кг при температуре 327 °с требуется 0, 25.105 дж. в) свинца массой 0, 25.10s кг при температуре 327 °с требуется 1 дж. г) свинца массой 0, 25.10s кг при температуре выше 327 °с требуется 1 дж.

Ответ: б) (уд. теплота плавления- то кол-во теплоты вещества массой 1 кг , находящегося при температуре плавления)

1) e = p * t  p - мощность  t - время ( в неделе 168 ч > 168 / 3 = 56 ч )  e = 2200 * 56 = 123200 вт * ч = 123,2 квт * ч  2) t = 168 / 12 = 14 ч  e = 80 * 14 = 1120 вт * ч =  1,12 квт * ч  3) t = 3 ч  e = 1800 * 3 = 5400 вт * ч = 5,4 квт * ч  4) t = 12 ч  e = 1200 * 12 = 14400 вт =  14,4 квт * ч  5) e = 1600 * 7 = 11200 вт * ч = 11,2 квт * ч  6) t = 168 / 6 = 28 ч  e = 420 * 28 = 11760 вт * ч = 11,76 квт * ч  7) t = 168 / 4 = 42 ч  e = 95 * 42 = 3990 вт * ч = 3,99 квт * ч  8) t = 168 / 6 = 28 ч  e = 42 * 28 = 1176 вт * ч = 1,176 квт * ч  9) t = 168 / 2 = 84 ч  e = 2,75 * 84 = 231 вт * ч = 0,231 квт * ч 

Match the 2 parts of the sentences from paragraph of text 1.

Moldagulova Aliya Nurmukhambetovna was a sniper of the 54th sniper brigade. She was born on October 25, 1925 in a small village in Aktobe province. She was Kazakh. She lost her parents and lived in Almaty with her uncle. Since 1935, Aliya lived in orphanage No. 46 in Leningrad.

At the beginning of the war, she moved from Leningrad. She graduated from the 7th grade of high school in 1942. She studied at the Rybnisk Aviation Technical School. In 1943, she graduated from the school of snipers in Moscow. She was in the army since October 1943. Aliya Moldagulova was the brave and best sniper in the brigade. Aliya was one of the bravest soldiers of the Second World War. She was not afraid of enemies and made many efforts to win.