Предмет: Физика, автор: sjsjshsh

двигатель автомобиля развивает развивает мощность P = 50 кВт когда двигатель со скоростью V = 90 км/ч Определите силу двигателя F автомобиля​

Ответы

Автор ответа: svjatoslawnechipor65
0

Ответ:

Дано:

Р=50 кВт=50*10^3 Вт;

V=90 км/год=90*10^3 м/год=90*10^3/3600 м/с=25 м/с.

Знайти F.

P=A/t, звідси знаходимо корисну роботу, яку виконує двигун автомобіля:

A=Р*t, яка повинна дорівнювати: А=F*S, де S-відстань, яку проходить автомобіль за 1 секунду, S=25 м-за умовою завдання. Тоді:

P*t=F*S, звідси знаходимо силу двигуна автомобілю:

F=P*t/S=(50*10^3)*1/25=2*10^3 H=2 кН.

Объяснение:

Автор ответа: ProstoN17
1

Ответ:

Дано: | Си: | Решение:

P=50кВт. | 50.000Вт |

V=90км/ч | 25м/с | F=P×V=50000×25=1.250.000Н

__________| |

Найти: | |

F-? | | Ответ:F=1.250.000Н

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Hi! I'm Alina. I used to live in Aktau, but then my mum got a job in Astana, so we moved here. We've been here for about two years now. It wasn't easy at first I really missed my friends. It took me about a year to settle in. But I've got some good friends here now, Astana is growing and changing fast, so it's an exciting place to live. The climate in Astana is quite extreme. It's very cold in winter. The temperature is below zero and it's so cold that the river freezes! We often have to stay indoors, but there are some great things to do outside, like skating. Another great thing is the shopping centres, which are much more than just shops. The Mega Mall has a great amusement park, and the Khan Shatyr even has an indoor beach! There's another place I really like in Kazakhstan, but it's completely different from Astana. My dad is from the Altai Mountains. I've got uncles and aunts and cousins who live there, and I love going to visit them. They Out the all live in a village in a valley. My uncle has got a lot of sheep and every summer he takes them up into the mountains. Last summer we went to a Kazakh festival in the . Use th out? mountains. I'd never seen eagle hunting before - it was really impressive. Golden uct? y eagles are enormous! There were lots of horse sports too - the riders are amazingly skilful! They start riding at a really young age there. Everyone's very hospitable in the Altai. Guests are welcomed warmly, and children are taught from a young age to respect other people. I hope we'll be able to keep our traditions alive, because they're an important part of our national identity​