1)Какая работа совершена при штамповке пластмассового изделия под поршнем гидравлического пресса, если перемещение поршня составило 1,5 см, а развиваемая при прессовании сила равна 13 кН? (ответ записать в джоулях)
2)Определите, на какую высоту можно поднять груз массой 45 кг, если совершить работу в 3,15 кДж. (принять g=10 м/с2)
3)Подъемный кран за 12 мин, совершил работу равную 900 кДж. Какую мощность он при этом развил? (ответ записать в кВт)
4)Рассчитайте, сколько времени должен работать двигатель мощностью 25 кВт, чтобы совершить работу 27 МДж? (ответ записать в минутах)
Заранее
аквпикнр5е6пкраеркврин526462еач5кигач5а. 256н6е6а5крнпмннмн7м6пм6пм6пир7ир6мр6м6емнпмнпмнпву4а6ем4аеRead the text again and write next to the sentences True/False according to the text.
1. She looks after the big animals.
2. Her favorite animals are the tigers.
3. There are four elephants at the zoo.
4. Molly gets up at 6 o'clock.,
5. The lions eat salad.
6. The animals drink water.Read the text again and write next to the sentences True/False according to the text.
1. She looks after the big animals.
2. Her favorite animals are the tigers.
3. There are four elephants at the zoo.
4. Molly gets up at 6 o'clock.,
5. The lions eat salad.
6. The animals drink water.Read the text again and write next to the sentences True/False according to the text.
1. She looks after the big animals.
2. Her favorite animals are the tigers.
3. There are four elephants at the zoo.
4. Molly gets up at 6 o'clock.,
5. The lions eat salad.
6. The animals drink water.Read the text again and write next to the sentences True/False according to the text.
1. She looks after the big animals.
2. Her favorite animals are the tigers.
3. There are four elephants at the zoo.
4. Molly gets up at 6 o'clock.,
5. The lions eat salad.
6. The animals drink water.Read the text again and write next to the sentences True/False according to the text.
1. She looks after the big animals.
2. Her favorite animals are the tigers.
3. There are four elephants at the zoo.
4. Molly gets up at 6 o'clock.,
5. The lions eat salad.
6. The animals drink water.
Объяснение:
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