Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
![FOEUS topics will include but not limit to
First Law of Thermodynamics
Temperature and internal energy-Calculate change in internal energy.
Heat definition - Temperature and Heat.
Ideal Efficiency for a Heat Engine
Specific Heat
Second Law of Thermodynamics- Conservation of Total Entropy
Wavelength, frequency and speed of waves
Determine wavelength, frequency on the wave graph
Nature of a sound wave
Wave on a string - Determine the frequency of a wave on a guitar/violin string
V.
Practice for Multiple choice
V 1. How much heat Q, in Joules, is required to warm up 1.0 kg of water from 10°C to 30°C?
V2. An ideal gas is kept at constant pressure while increasing its volume from an initial volume of 5 liters
to a final volume of 10 liters. The initial temperature of the gas is 450K, what is the final temperature?
3. Radio waves travel at the speed of light, 3.0 x 108 m/s. Find the wavelength of a radio wave received
at 107 hertz.
4. Sound waves sent by a whale travel with a speed of 900 m/s in water. A whale emits sound wave
directed toward the ocean floor below. If the sound wave takes 0.5 seconds to reach it, how far is the
ocean floor from the whale?
II. Essay questions (5 questions)
1. Problem solving with first law of thermodynamics
Practice: Exercise E13 of Chapter 10-Temperature and Heat
ing with heat and specific heat](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5f364ee9-2ee4-4784-a317-f97348bbfc90%2Fa2e2a594-ba1c-4b49-8a1f-23a629d65365%2Fbo4taof_processed.jpeg&w=3840&q=75)
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