Ajack for a car requires a force of 120 lbs to lift a 3,000 lb car. what is the ratio of the cars weight to the force required to lift the car?

Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors

How have the competing explanations' experiments on atoms affected the development of the atomic model?

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.