I WRITTEN WORK NO. 1-MODULE 4 I. Short Response. Read each item carefully. Write your answers on the answer sheet on the next page. 1. Balboa Park in San Diego as an outdoor organ. When the air temperature increases, the Give a short explanation of your fundamental frequency of one of the organ pipes answer. a) increases b) decreases c) stays the same d) is impossible to determine (The thermal expansion of the pipe is negligible) 2. Suppose you're on a hot air balloon ride, carrying a buzzer that emits a sound of frequency f. If you accidentally drop the buzzer over the side while the balloon is rising at constant speed, what can you conclude about the sound you hear as the buzzer falls toward the ground? Give a short explanation of your answer. a) The frequency and intensity increase. b) The frequency decreases and the intensity increases. c) The frequency decreases and the intensity decreases. d) The frequency remains the same, but the intensity decreases. 3. Explain the relation between the wavelength and the period of a wave. 4. If the handle of a vibrating tuning fork is held against a table, the sound of the tuning fork beams louder. Why? 5. If a huge explosion occurs from a distance, which will you be able to observe first, the sound of the explosion or the tremor of the ground? Why? II. Problem Solving. Analyze the problems carefully, then solve them on the spaces provided on the answer sheet. Be systematic when answering. Write the given, label them; the required; and all calculations pertinent to the problem.
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
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