Предмет: Физика, автор: lixinabgenia

С какой по модулю силой мальчик должен толкать ящик массой m, чтобы двигать его равномерно по горизонтальному полу? Коэфициент трения ящика о пол равен u

lixinabgenia: ???

Ответы

Автор ответа: ppp6491

50

F = u*N. N = mg. Тогда F = u*m*g

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: бабах233

помогите с англиским

2 года назад

Предмет: Английский язык, автор: Аноним

Hollyleaf wakes up back in the tunnel, and is burning up and thirsty. In her delirium, she imagines that she is in the medicine den and wonders why Leafpool wasn't giving her any water. She bumps her nose into a wad of moss and sucks at it, swallowing the water down. Hollyleaf realizes that she isn't alone as she feels a cat pushing something beneath her injured leg. She hisses in pain and the strange cat tells her they are giving her feathers to make her more comfortable and to lie still. Hollyleaf, not recognizing the cat's scent and voice, asks them who they are and where she is. She flails her paws and asks them to let her go. A paw presses down on the black cat's shoulder and another paw pushes some leaves next to her. They tell her that everything is all right, she's safe, and to eat the herbs and sleep. She eats the comfrey and the poppy seeds and falls back asleep.

2 года назад

Предмет: Английский язык, автор: djehejdgsy

1. The clowns were very ...................... .
The children were ......................
by the show. (amusing/amused).

2. The people in front of me were ......................
and fell asleep. The
film was ...................... .
(boring/bored).

3. Everyone was ......................

as the situation was ......................
. (shock-
ing/shocked).

4. It was a ......................
task. The agent was ......................
to do it. (chal-
lenging/challenged).

5. Helen is ......................
in many things. She is an ......................
person.
(interesting/interested).

6. It was a very ...................

match. All the fans were very ................... .
(exciting/excited).

7. Housework can be very ......................
I am often very ...................... .
(tiring/tired).

8. It was quite ......................

that they got married. But I wasn’t
...................... . (surprising/surprised).

2 года назад

Предмет: Геометрия, автор: GoshaPMD

помогите срочно это на оценку.)

8 лет назад

Предмет: Алгебра, автор: Gosharoro

(k-2)(2+k)-(5-k)² при k=-3.8

8 лет назад