Предмет: Физика, автор: 4ikikamboni

Яку роботу виконає кран, рівномірно піднімаючи гранітну плиту
об’ємом 4м 3 на висоту 5м?

Ответы

Автор ответа: andreydemchenko306
10

Ответ:

A=F*L

F=gm

m=P*V=2700кг/м3 * 4м3=10800кг

F=9,8H/кг * 10800кг = 105840Н

A=105840H * 5м=529200Дж

Объяснение:

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Love hit me when I was twelve. I was still in shorts but little hairs were starting to grow on my upper lip. A young girl, Lucy, lived in the flat above ours. She was pretty with lovely, brown hair and perfect teeth. One day, after I have saved my pocket money for some time, I invited Lucy to go to a variety show with me. I only had seventy cents but I had worked it all out: two tickets for the theatre, fifty cents, and four tram tickets, twenty cents.
It was January and it had snowed earlier that day so we took the tram. Lucy looked charming and I looked handsome as we got off the Times Square. Square. 4

Unfortunately, a candy vendor was standing outside the theatre. I hadn’t thought about that. Lucy saw her favourite coconut candy and asked for it. Like a fool, I bought it for ten cents.
We were miles away from the stage and the noise of Lucy eating her candy was louder than the actors’ voices. During the performance, Lucy ate every single bit of the candy. On the way out, I was a bit upset about the candy. But then I realized I only had enough money for one ticket back home. Today I feel terrible about this, but remember, I was only twelve, it was very cold and Lucy had eaten all the candy.
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