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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Numerical Problems Based on Class 11 Physics Projectile Motion
Last modified on:3 years agoReading Time:6MinutesNumerical Problems Based on Class 11 Physics Projectile Motion Q.1. A cricketer can throw a ball to maximum horizontal distance of 160 m. Calculate the maximum vertical height to which he can throw the ball ? Given g = 10 m/s2. Q.2. A ball is thrown horizontally from the top of…
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Numerical Problems Based on Class 11 Physics Chapter 3 Motion In A Straight Line
Last modified on:3 years agoReading Time:13MinutesNumerical Problems Based on Class 11 Physics Chapter 3 Motion In A Straight Line Q.1. A body starting from rest has an acceleration of 20 m/s2. Calculate the distance travelled by it in 10th second. Ans. 190 m Q.2. A car travelled the first third of a distance x at a…
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Extra Questions for Class 12 Biology Chapter 12 Biotechnology and its Applications
Last modified on:4 years agoReading Time:11MinutesExtra Questions for Class 12 Biology Chapter 12 Biotechnology and its Applications Here we are providing extra questions for class 12 biology. This post covers extra questions for class 12 biology chapter 12 Biotechnology and its Applications. Students can read and practice these questions to score better marks in the exam.…
