What is th resistance force when you walk up an inclined plane?

Why should seat belts not be mandatory quick plz

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

To a of 4 x hz is 1. 0. mm nm nm