یا وارد شوید
It is a well-known phenomenon that the sound of an approaching sound source is higher than that of a receding one.
A transformer is a device used for converting the voltage of electric current.
There are various types of instruments used for measuring temperature.
Stirling engines are also known as external combustion engines. Unlike internal combustion engines (e.g. Otto-engine), here combustion takes place outside...
The process of the decay of unstable nuclei is called radioactivity.
The animation shows the way forces act on wheeled vehicles and vehicles with runners.
Capacitors store electrical energy in the form of electric charge.
The Space Shuttle was a manned, reusable spacecraft operated by NASA.
In alkaline batteries electric current is generated by electrochemical reactions
Saturn is the second largest planet in the Solar System, easily recognisable by its rings.
Uranus is the 7th planet from the Sun, a gas giant.
سیاره ی زهره دومین سیاره بعد از خورشید و درخشان ترین شیء در آسمان شب است-بعداز ماه-۔
The length of the metal frameworks of bridges change when the temperature changes.
Submarines submerge and surface by changing the average density of the hull.
Mercury is innermost and smallest planet of the Solar System.
Due to their asymmetrical profile of the wings, lift is produced while flying at a high speed.
Possible traces of water and life are sought on Mars.
موتورهای دی سی شامل یک آهنربای دائمی و یک سیم پیچ در مغناطیسی هستند که جریان الکتریکی در آن جریان دارد۔
Electric current can be generated by rotating an armature loop in a magnetic field.
Neptune is the outermost planet of the Solar System, the smallest of the giant planets
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