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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Logarithm Formulas
Last modified on:3 years agoReading Time:4MinutesHere we are providing logarithm formulas for maths. These formulas are important for students studying in science and commerce stream. These formulas are very important for Physics and Chemistry also. Students are suggested to go through all the formulas. It will help students to solve physics and chemistry problems involving the…
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Case Study and Passage Based Questions for Class 9 Maths Chapter 14 Statistics
Last modified on:3 years agoReading Time:2MinutesCase Study and Passage Based Questions for Class 9 Maths Chapter 14 Statistics Case Study Questions: Question 1: The Class teacher of Class X preparing result analysis of a student. She compares the marks of a student obtained in Class IX (2018-19) and Class X (2019-20) using the double bar graph…
