Describe how an open system can be isolated

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

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.