Table of Contents
Charging of Insulators
Since charge cannot flow through insulators, neither conduction nor induction can be used to charge, insulators, so in order to charge an insulator friction is used. Whenever an insulator is rubbed against a body exchange of electrons takes place between the two. This results in appearance of equal and opposite charges on the insulator and the other body. Thus the insulator is charged.
For example rubbing of plastic with fur, silk with glass causes charging of these things.
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Reynolds Number
Last modified on:3 years agoReading Time:10MinutesWhat is Reynolds Number? The Reynolds number (Re) is a dimensionless parameter used in fluid mechanics to characterize the flow of a fluid (liquid or gas) around an object or through a conduit. It relates the inertial forces to the viscous forces in the fluid and helps determine the type of…
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Class 9 Science Chapter 3 Atoms & Molecules Study Notes
Last modified on:5 years agoReading Time:1Minute
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Study Notes for CBSE Class 9 Science Chapter 2 Is Matter Around Us Pure
Last modified on:5 years agoReading Time:11MinutesStudy Notes for CBSE Class 9 Science Chapter 2 Is Matter Around Us Pure ‘Pure’ word means that there is no mixing in a substance. But according to scientific language all things are mixture of so many substances, not of single one. That’s why they are not pure. e.g., Milk, water,…
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Class 9 Science Chapter 1 Matter In Our Surrounding Study Notes
Last modified on:5 years agoReading Time:4MinutesMatterThe matter is the material of which everything in this universe, in and around us is made up of in different shapes. It is anything that occupies space and has mass and offers resistance to any applied force.Physical Nature of Particles :Matter is made up of particles. The particles of matter…
