সকল বলেরই ঘাত থাকে, যা বল ও বলের ক্রিয়াকালের গুণফল দ্বারা পরিমাপ করা হয়। অর্থাৎ বলের ঘাত = বল × বলের ক্রিয়াকাল = F × t = ma × t = m (v – u)/t × t = mv – mu = শেষ ভরবেগ –…

Voltage divider rule Suppose there are a few resistors in series in a circuit with which an emf source (like a battery) is connected. Now how to find the voltage drops in each resistor? One way is to find the…

I bought this land one year ago. I have made here some establishments (a house) and then I built a fence around my garden. Well, while putting the fence the person representing the previous owner (of the land) helped me…

What is centrifugal force? Centrifugal force is called a virtual force. Because when an object revolves around in a circle, it feels that someone or something is pushing it outwards from the center. Actually no one is pushing, the force…

Equation of a straight line In order to determine the equation and the graph of a straight line you just need two conditions. It could be two points, or one point and the slope, or intercepts from the axes etc.…

Is there really a basis for voltage, pressure and temperature relationship? Consider two charged bodies – direction of flow of charge between them doesn’t depend on the relative amount of charges on the bodies. It depends on the potential difference…