Which of the following material is most suitable for making core of an electromagnet ?Physics A. air B. steel C. Cu-Ni alloy D. soft iron
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
