What will be the apparent displacement, d, in ground distance, for a tower of height h = 100 meters, if the tower top appears to be at 2000 meters from the nadir point, and the plane was flying at 18,000 meters when the photo was taken (round up or down to the nearest meter; only enter the number not the units)?

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.