90. a^m × b^m = (ab)^m
- July 29, 2021
- Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,
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Two positive point charges each of magnitude 10 C are fixed at positions A &B at a seperation 2 d = 6 m. A negatively charged particle of mass m = 90 gm and charge of magnitude 10 × 10^−6 C is revolving in a circular path of radius 4 m in the plane perpendicular to the line AB and bisecting the line AB. Neglect the effect of gravity. Find the angular velocity of the particle
1. A park, in the shape of a quadrilateral ABCD, has C = 90°, AB = 9 m, BC = 12 m, CD = 5 m and AD = 8 m. How much area does it occupy?
An electron is taken from A to point B along the path AB in a uniform electric field of intensity E = 10 V/m . Side AB = 5 m , and side BC = 3 m . Then , the amount of work done on the electron by us is
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