Предмет: Физика, автор: Аноним

если масса воды в ведре уменьшится вдвое, изменится ее вес? как? почему?

Ответы

Автор ответа: pmak

Если масса воды в ведре уменьшится в двое, то вес уменьшится в двое.
Это можно объяснить тем, что вес тела, это сила с которой оно действует на свою опору или подвес.
Находится по формуле:
P=mg
Отсюда мы и видим прямую зависимость от массы.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: dhwhshsb

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.

“Texting on things that are unrelated to class can hurt student learning,” Kuznekoff found. Overall, the control and class-related-message groups did 70 percent better on the test than did students that could text and tweet about anything. That control and relevant-message groups also scored 50 percent higher on note-taking.

“You’re putting yourself at a disadvantage when you are actively engaged with your mobile

device in class and not engaged in what’s going on,” warns Kuznekoff. His team shared its findings in the July 2015 issue of Communication Education.

Those findings mesh with what college students themselves report. Another new study found that the more time students said that they typically text, use social media or read online during class, the lower their grades are.

“A lot of students tend to think that they are good at multitasking,” or doing more than one thing at a time, says Saraswathi Bellur. She’s a communications researcher at the University of Connecticut (UConn) in Storrs. In fact, she and her colleagues found, multitasking in class “is likely to harm their academic performance.”

“We also have data that show that people who multitask during class or while doing homework have to spend more time studying,” notes UConn coauthor Kristine Nowak. In other words, she argues, students who use mobile devices for something other than research or note- taking during class “are not efficient, and it is costing them time.” Concludes Nowak, “People believe they are better at multitasking than they are and this is leading them to bad study habits.” Her group shared its findings in the December 2015 issue of Computers in Human Behavior.

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.

6 лет назад

Предмет: Математика, автор: sveta1234560

задача имеет два способа решения объясни первый способ дополнительно 2 определение рациональность из них из двух населений пунктов расстояние между которыми 40 км вышли в противоположные направления одновременно два пешехода первый пешеход шёл со скоростью 4 км ч а второй 5 км ч какое расстояние между пешеходами будет через 2 часа первый способ первое действие 5 х 2 равно 10 км второе действие 4 х 2 равно 8 км три действия 10 + 8 равно 18 км четвёртое действие 18 плюс 40 равно 58 км второй способ первый первое упражнение четыре плюс 5 равно 9 км ч со скоростью удаления второй способ решите

6 лет назад

Предмет: Физика, автор: alexsoro1717

помогите пожалуйста решить цепочку

6 лет назад

Предмет: Алгебра, автор: malek7

Найдите все целые значения m, приНайдите все целые значения m, при которых график функции y=4x^2+mx+1 расположен выше оси х.
Заранее спасибо!!!

9 лет назад

Предмет: Химия, автор: alena2825

какой объем водорода потребуется для получения 1 т аммиака?

9 лет назад