Law of conservation of energy - Energy can neither be created nor be destroyed; it can only be transformed from one form to another. Consider a body of mass m placed at A. h = AB is the height of...
CBSE Class 9 Math: Ten Important Questions 1. ABCD is a rhombus and P, Q, R, S are mid-points of AB, BC, CD and DA Prove that quadrilateral PQRS is a rectangle. 2. ABCD is a rectangle and P, Q, R and...