The normal ear is the most sensitive in the frequency rangePhysics A. 20000 to 30000 hertz B. 10 to 20 hertz C. 2000 to 4000 hertz D. 6000 to 8000 hertz
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
