A horizontal length of pipe XY contains water. Water will MOST LIKELY flow in the direction XY if the pressure at X is atmospheric and at Y the pressure is a. equal to the pressure of the water in the pipe b. atmospheric c. less than atmospheric d. greater than atmospheric In a city water distribution system, the large overhead water tank makes use of the fact that at the wider the tank is as compared to the width of the pipe, the greater the water pressure would be at ground level b. the greater the height of the water level in the tank, the greater the water pressure would be at ground level c. the larger the mass of water in the tank, the greater the water pressure would be at ground level the larger the volume of water in the tank, the greater the water pressure would be at ground level Water emerges from a fine nozzle of a hose at high speed. This is a consequence of a. Bernouille's Principle b. Pascal's Principle c. Archimedes' Principle d. The Principle of Conservation of Momentum An aeroplane wing is designed to provide a large force of a. Upthrust b. Lift 0. Drag d. Thrust What form of energy does kerosene store? a. Heat energy b. Light energy c. Chemical energy d. Kinetic energy In a roller coaster, when at rest at the top, the energy is MAINLY a. sound energy b. kinetic energy 0. heat energy d. potential energy Which of the following is a definition of heat? a. Heat is thermal energy that flows spontaneously from a hot substance to a cold substance. b. Heat is a measure of the average kinetic energy of a substance. c. Heat is thermal energy that flows spontaneously from a cold substance to a hot substance. d. Heat is a measure of hotness of a substance. Thermodynamics is the study of a. sound and forces b. heat and work 0. heat and forces d. sound and heat Which law of thermodynamics is a statement that in any energy conversion process some energy is always lost to the environment? a. Third Law b. First Law c. Second Law d. Zeroth Law