Рассчитайте, на каком расстоянии от Земли в парсеках и световых годах находится галактика, у которой скорость удаления составляет 18 750 км/с. (ответ округлите до десятых.) Решение. Согласно закону Хаббла:
rn= ___ км/с/___ км/(с*Мпк)= ___ Мпк;
rсв.г= ___ пк/ ___ св.лет= ___ млн св. лет.
ответ: галактика находится на расстоянии ___ Мпк и ___ млн св. лет.
2. Mary always did her lessons. Did Mary always do her lessons? Mary didn't always do her lessons.
3. They walked to work. Did they walk to work? They didn't walk to work.
4. We did a break every two hours. Did we do a break every two hours? We didn't do a break every two hours.
5. Kate talked on the phone with her friend. Did Kate talk on the phone? Kate didn't talk on the phone.
6. He met his friends yesterday. Did he meet his friends yesterday? He didn't meet his friends yesterday.
7. I brushed teeth in the morning and in the evening. Did you brush teeth in the morning and in the evening? I didn't brush teeth in the morning and in the evening
8. Helen's father washed the car yesterday . Did Helen's father wash the car? Helen's father didn't wash the car
9. My mother did the shopping at the weekends. Did your mother do the shopping at the weekends? My mother didn't do the shopping at the weekends.
10. They visited relatives on holidays. Did they visit relatives on holidays? They didn't visit relatives on holidays.