Предмет: Физика, автор: dontworryjustlisa

Допоможіть будь ласка!!!! Підйомний кран підняв панель масою 0,8 т. Робота, яку він виконав, дорівнює 120 кДж . На яку висоту кран підняв панель? ​

Ответы

Автор ответа: brawl2554
0

Объяснение:

0,8т = 800кг

A = mgh

h = A/mg

g всегда ≈ 10.

120кДЖ = 120 000Дж

h = 120 000/ 10 × 800 = 15м

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Закончите предложения в соответствии с содержанием текста.
1. The Britons spoke …
a) English.
b) Celtic.
c) Latin.
2. Britain was conquered by the Romans …
a) in the 1st century A.D.
b) in the 1st century B.C.
c) in the 1st century.
3. The Romans spoke …
a) Latin.
b) Italian.
c) English.
4. Julius Caesar was the commander-in-chief of the Romans …
a) bridges.
b) roads.
c) troops.
5. To conquer Briton was …
a) difficult.
b) not difficult.
c) easy.
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