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هل لاحظت أن جسمك يميل للأمام عندما تكبح السيارة؟ أو أنه يميل للخلف عندما تقلع السيارة؟ ذلك لأنك تعاني من خاصية في جسمك تسمى “القصور الذاتي”. كلما زادت كتلة جسمك، كلما ازداد ذلك التأثير.
يُعرّف القصور الذاتي على أنه مقاومة الجسم لأي تغيير في متجه سرعته. وهذا يشمل تغييرات في مقدار سرعة الجسم أو اتجاه حركته.
The paper: Using a web-based and stand-alone oscilloscope for physics experiment during Covid-19 pandemic, Mahizah Ismail et al (2023), Phys. Educ. 58 015006, is based on the Virtual Oscilloscope simulation. This paper was authored by Mahizah Ismail, Farid Minawi, Wan Zul Adli Wan Mokhtar, Noraihan L Abdul Rashid and Ahmad K Ariffin.
The article DOI: https://iopscience.iop.org/article/10.1088/1361-6552/ac95eb
If this future becomes reality, there will be a massive wave of job displacement as AI takes over across various industries and job markets. But a wide horizon of opportunities will rise. Instead of a position of making decisions in a company, there will be a position of training the AI to make that decision and to maintain its logic.
As a bizarre example, companies might not need IT (Information Technology) officers anymore! Instead, they might employ AIT (Artificial Intelligence Technology) officers, whose main responsibility is training and maintaining the company’s AI model to solve the company’s technical issues!
Using this simulation, you can experience the phenomenon of charging a metallic ball by induction in the first stage and charging the ball by contact in the second stage after the charged rod touches the ball. The displayed charges are for an illustrational purpose, and they are not seen in reality. You can disable the display of charges on the rod and on the ball.
In this simulation, you can try two situations, one in which the rod is positively charged and another in which the rod is negatively charged, and you will see that the two situations result in the same observation.
Newton’s third law demonstrates that for every action, there is an equal and opposite reaction. This video uses a Jackie Chan movie scene to illustrate the principle: when Jackie pushes his partner (action force), he experiences an equal push back (reaction force), allowing both to escape danger. A creative real-world example of action-reaction force pairs.
Elementary math teachers know the importance of this model in teaching the concept of applying distributive property in area model.
The idea is to break one large area (which represents the product of two numbers) into several pieces (products of smaller numbers), then to find the areas of the pieces individually, and finally add to get the area of the whole (the product of the given numbers).
لو تم إجراء هذه التجربة في ظروف يكون فيها صافي القوى الخارجية صفرًا على المدفع المُحمّل قبل وبعد إطلاق النار مباشرة (على سبيل المثال، عندما يكون وزن المدفع متوازناً مع رد الفعل العمودي للأرض)، فإن حسبنا عندئذٍ حاصل ضرب كتلة القذيفة بسرعتها المتجهة وحاصل ضرب كتلة المدفع بسرعته المتجهة قبل وبعد الإطلاق مباشرة، سنجد أنه قبل إطلاق النار كان كلاهما في حالة سكون، وبالتالي يكون الناتج صفرًا لكليهما، بينما نجد أن الناتجين، بعد إطلاق النار ذوا مقدار متساوٍ، ولكن باتجاهين متعاكسين.
