A water tank of demensions 3 metre × 2 metre × 2 metre is half filled with water how much will be exerted by water in the bottom of the tank

What is the relationship between the wavelength of a wave and it's energy?

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.