7 . K [ atomic no. 19, mass no. 40 ]…….Find the no. of protons, electrons and neutrons ( 3) present in it. ?
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Newton's third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction.
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The length of a rectangle is 5 cm more than its breadth. If the length is decreased by 3 cm and breadth is decreased by 2 cm, then area of the new rectangle is same as the area of the original rectangle. Find the dimensions of the original rectangle.
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