What is the best term to describe information sent as patterns and codes in the controlled flow of electrons through a circuit

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.

The speed of light can be used to measure the

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration