500 - 170 = 330 Дж
Объяснение:
At the beginning of the summer I went to Chelyabinsk, this is in the Urals. There I spent a month walking with my friends. On July 5, I went to the Artek camp. It was cool, we climbed Bear Mountain from three in the morning to two in the afternoon. I got into the naval squad, we went to sea on yachts and won the cup. On the fifth of August I was in Moscow at the piano music school. There I learned a lot of new things. It was very interesting. After Moscow, I flew to Chelyabinsk again, we went shopping, bought school uniforms, stationery and household goods, said goodbye to friends and on September 1, I was finally at home
At the beginning of the summer I went to Chelyabinsk, this is in the Urals. There I spent a month walking with my friends. On July 5, I went to the Artek camp. It was cool, we climbed Bear Mountain from three in the morning to two in the afternoon. I got into the naval squad, we went to sea on yachts and won the cup. On the fifth of August I was in Moscow at the piano music school. There I learned a lot of new things. It was very interesting. After Moscow, I flew to Chelyabinsk again. We went shopping, bought school uniforms, stationery and household goods, said goodbye to friends and on September 1, I was finally at home.
Объяснение:
Дано
W1=500Дж Рішення
W2=170Дж по формулі
r=2 Gm+m2
Wn=
r
Обчислимо
500+170
Знайти? В==2Дж
Ек-? 2
Відповідь:2 Дж