What will happen to the soccer ball as it rolls down the ramp? the question is on science there isnt a choice for science

Identify two factors that determine the rate of stream erosion

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.

Does current flow through or across a resistor?