sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letter a, b, c or d on your answer sheet. Alpaca 26-35read the text and below and choose the correct word for each space. For each question mark the correct letteror each question mark the c
извините если немного не так. или не перевела. я старалась)
Объяснение:
При движении по круговой орбите у спутника есть центростремительное ускорение,
aц=
υ
2
R
. С другой стороны это ускорение вызвано единственной гравитационной силой притяжения к земле и равно ускорению свободного падения g на данной высоте, т.е.: g=
υ
2
R
. Из последней формулы выражаем скорость (которая, кстати, будет равна первой космической скоростью на данной высоте): υ=
g·R
. В данном случае R - радиус круговой орбиты, равный сумме радиуса Земли и высоты над её поверхностью: R= Rз+ h . Ускорение свободного падения тоже зависит от высоты над поверхностью нашей планеты и рассчитывается так: g=
GMз
(Rз+ h)
2
, где G - гравитационная постоянная, а Mз - масса Земли (она не дана в задаче, но её можно найти в справочниках). Подставляя формулы для g и R в формулу для скорости, получаем: υ=
GMз
Rз+ h
. Теперь расчет: υ=
6,67·10
−11
(Н·м
2
/кг
2
) · 6·10
24
кг
6,4·10
6
м+ 0,6·10
6
м
= 7561,18 м/с