Предмет: Физика, автор: NoobInPhisick1000

С помощью подвижного блока строитель поднимает ящик с кирпичами, прикладывая к нему силу 300 Н. Определите Коэффициент полезного действия повижного блока, если для совершения полезной работы 1,5кДж веревка блока должны быть протянута на 6 м.

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Автор ответа: lemonarik

Я думаю то что на этот вопрос ответ такой 3 м. В секунду

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английский True/False
Distraction by mobile devices is indeed something to worry about. Jeffrey Kuznekoff studies communications at Miami University Middletown in Ohio. For one recent project, he let college students take notes during a video lecture. Afterward the students took a test on the material. During the video, one group of students could text or tweet about anything. Another group could text and tweet only if the messages related to the lecture. A control group couldn’t text or tweet at all.

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Task 1. Read the following sentences related to the text “The downside of mobile devices”. Write True, False, or Not Given for each sentence, justify your response.

№ Statements True/False/

Not Given Justification

1 The research provides evidence that there are no

concerns related to mobile apps.

2 Three involved groups were exposed to equal

conditions.

3 One of the female researchers found out, multitasking in class “is likely to harm peer

relationships.”

4 Students’ academic multitasking could result in

the inescapable lack of time.

5 Distraction by mobile devices is indeed something to don`t worry about

6 For one recent project, author let college students take notes during a video lecture.

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