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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Case Study Questions for Class 8 Science Chapter 13 Sound
Last modified on:4 weeks agoReading Time:7Minutes Looking for high-quality practice material for Chapter 13? You’re in the right place. Below, we are providing Case Study Questions for CBSE Class 8 Science Chapter 13: Sound. These passage-based questions are perfectly aligned with the latest syllabus to help students practice competency-based learning. Read through the provided passages, test…
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Important Derivations for Class 11 Physics Chapter 5 Laws of Motion
Last modified on:3 years agoReading Time:4MinutesImportant Derivations for Class 11 Physics Chapter 5 Laws of Motion Here we are providing important derivations for Class 11 Physics Chapter 5 Laws of Motion. Derivation 1: Derivation of First Law of Motion from Newton’s Second Law To derive the First Law of Motion (Law of Inertia) from Newton’s Second…
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Important Derivations for Class 11 Physics Chapter 4 Motion in a Plane
Last modified on:3 years agoReading Time:7MinutesImportant Derivations for Class 11 Physics Chapter 4 Motion in a Plane Here we are providing important derivations for class 11 Physics Chapter 4 Motion in a Plane. This chapter is also called as Motion in 2D. So here we are presenting derivations for Motion in 2D. Derivation 1: Time of…
