The vector sum of all the external forces acting on a rigid body is expressed as ∑F and the vector sum of moments of the external forces about a point is gi...

A trapezium has vertices marked as P, Q, R and S (in that order anticlockwise). The side PQ is parallel to side SR. Further, it is given that, PQ = 11 cm, QR...

Mosquitoes pose a threat to human health. Controlling mosquitoes using chemicals may have undesired consequences. In Florida, authorities have used geneticall...