The ar
as the
expens
dear robert
i'm writing to tell you about our new house. it's lovely! it's 1) the (nice)
house i have ever seen. it's much 2)
(big) than our last
one but also 3)
(expensive). the house looks very
modern. there are many rooms with large windows and wooden floors.
i finally have a room that i don't have to share with my 4
(young) brother. my bedroom is on the second floor and i have a great view.
5)
(good) thing about this house is that it has a
lovely garden. there are lots of flowers and trees around which make the place much
. . . (colourful).
the new house is in a peaceful area it's actually
(quiet) area i've ever lived in. the neighbours are also very kind. can you believe they organised
a party for us? they are definitely
(friendly
people i have ever met.
well, that's all my news. i hope you'll visit me soon. i can't wait to show you the new place.
m - масса тела ( 15 кг )
V - объем тела ( 5,5 дм³ = 0,0055 м³ )
g - ускорение свободного падения ( 10 Н / кг )
p - плотность воды ( 1000 кг / м³ )
F - сила ( ? )
F(т) = m * g - это сила тяжести
F(А) = p * g * V - это сила Архимеда
F(т) - F(A) = m * g - p * g * V = 15 кг * 10 Н / кг - 1000 кг / м³ * 10 Н / кг * 0,0055 м³ = 150 - 55= 95 Н
ответ : 95 Н