# Physicist_Engr_Zakir

## সকল বলেরই ঘাত থাকে, কিন্তু সকল বল ঘাতবল নয়

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 and current divider rule

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…

## Measuring my own land located in Bangladesh

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…

## Work, positive work and negative work

What is Work? How does Physics define it? Something that is considered a work in daily life may not be considered a work when it comes to physics. Take the job of a watchman for example. Even if he barely…

## Centrifugal force: The myths and the reality

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…

## Straight line: How many points are needed to make a straight line?

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.…

## Voltage, pressure and temperature relationship

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…

## Series connection in real life: The reason why series connection might be hazardous

A couple of bulbs connected in series, if one of them is fused, none of them will glow anymore. And you can not say for sure which one is fused, unless you manually check each and every of them. Series…