Предмет: Физика, автор: mlgman

. Сцпортсмен массой 80 кг скользит на коньках. Какое давление он оказывает на лед, если длина одного конька 40 см, а ширина лезвия 3 мм?

Ответы

Автор ответа: Dkill
0
P=F/S
F=80*10=800H
S=0.4*0.003=0.0012м2- площадь 1 лезвия
P=800/0.0024=333333Па
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Предмет: Английский язык, автор: vibeviktorija78
Put the verbs in Past Simple/Past Continuous 


A VISIT TO A ZOO


 

Last Sunday, the weather___ (to be) pleasant. I, along with my family, visited zoo. It is situated at a distance of twenty kilometers from our house. When we reached the gate of the zoo, there was huge crowd there. People _____ (to buy) entrance tickets. Some of them_____ to share) their excitement about the visit of the zoo. We  _____ (to reach) there at 11.30 a.m. We bought our tickets and went inside the zoo. There were a large number of people there.


We first _____(to visit) zoological garden. There we ____ (to see) a huge lake in which different types of water-birds were swimming. The sight of a white duck swimming on the smooth surface of clean water was a wonderful delight. Then, we moved ahead to enclosure where the birds ____(to chirp). They included sparrows, pigeons, eagles, parrots of different colours. Their enchanting music delighted us much.


There ___ (to be) wild animals like lions, tigers, leopards and tigresses in other enclosures. We _____ (to be frightened) of the roar of the lions, but at the same time it was awesome to see the king of the forest. When someone moved near the enclosure, the majestic animal ____ (to begin) to roar. Then we moved to the den of the tiger. 


Its flashing glare and sharp teeth filled us with fear. We also saw the elephants and bears. Then we came across a big garden in which stags and deers were frisking about. These animals were very active, sharp and smart. In one corner of the garden there was a big tree on which a large number of monkeys and baboons____(to jump). Their tricks and pranks were very pleasing. Some people threw bananas at them to which they immediately tried to catch by jumping down the branches. Children were enjoying by making faces at them.


We next halted at an aquarium, and there were varieties of aquatic animals and birds there. There were many species of fish. Their fidgeting in water was really very delighting. Next to this enclosure _____ (to be kept) polar bears who looked deserted and dejected.


Then we moved to a big tank which was full of crocodiles. These mammoth animals were very frightening where there are also other water animals. We saw snakes like cobras and pythons. Some snakes were very fierce.


We____(to spend)  five hours in the zoo. We took a full round of it and enjoyed ourselves a lot. We were happy to see all those animals with our own eyes about which we read in books. The memory of the visit still fills us with thrill and excitement.


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