A man is standing between two hills. He fires a gun. He hears two echoes: one after 0.3s and another after 0.5s. What is the distance between the two hills?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

Is the time in tennessee the same as florida

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system