If A=B, which of the following is not correct ?Physics A. A.B = A^ B^ B. |A| = |B| C. |A^| = |B^| D. AB^ = BA^
Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60km/h and the other is moving at 40km/h mph. In how many hours will they meet?
The most fundamental of all sciences which provides basic principles and fundamental laws to other branches of science is