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fundamental property of an object that refers to the amount of matter in an object, and it's measured in kilograms or grams (m) |
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any influence that causes an object to undergo a change in speed, a change in direction, or, a change in shape |
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the force of gravity on a object and is treated to its mass |
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quantity of 3-D space occupied by a liquid, solid, and gas |
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mass of a substance, a material, or an object per unit of volume, or mass divided by volume. |
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the distance traveled by an object in a given unit of time measured in meters per second (m/s) |
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has the same numerical value as speed (m/s) but also specifies the direction of the movement |
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refers to the mass times velocity of an object during motion, measured by kilograms times meters per second (kg-m/s) |
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when velocity changes as a function of time |
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the resistance of any physical object to a change in its state of motion or rest |
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the property of a material that returns it to its original shape after it has been deformed by an external force |
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change in the shape or size of an object due to an applied force |
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a force is exerted over a distance and is measured in newtons times distance and is measured in newtons times distance in meters |
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mks system or ergs in the CGS system |
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the rate of which work is done or energy used in a period of time is measured in watts |
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power per unit of area and is measured in watts per square meter in the mks system or watts per square centimeter in the CGS system |
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force acting perpendicularly on a scientific surface area |
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a system of knowledge covering the operation of general laws obtained and tested through the scientific method |
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domain concerned with the physical world and its phenomena, it includes fields such as stronamy |
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the science that deals with matter, energy, motion, and force, as well as the physical processes and phenomena of a particular system. |
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a branch of physics that deals with the production, control, transmission, reception, and effects of sound |
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the combination of biology and acoustics in the study of sound production and perception in animals including humans |
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falls into the domain of bioacoustics |
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relative amount of deformation undergone by an object |
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resistance of an elastic body to deformation by an applied force |
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is a gas composed primarily of nitrogen (78%) and oxygen (21%) with traces of other elements, including water vapor, carbon, dioxcide, and argon |
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a force that acts perpendicularly on a surface |
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at sea level is used as a basis of comparison |
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causes air to flow and creates a driving pressure |
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if there is no difference in pressure between two areas, air will not flow between them, and there will be no driving pressure |
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the movement of air through a particular area in a certain interval of time |
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relatively steady pressure |
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an area of positive preasure |
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the restoring force is proportional to the distance of displacement and acts in the opposite direction |
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the decrease of amplitude |
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the outermost area of the sphere |
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the farther the changes in air pressure travel from the source, the more damped they become because the area of the wave front is directly proportional to the square of its distance from the source |
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occurs when the resting force acting on an object (i.e. elasticity) is directly proportional to the displacement of the object from its equilibrium position but in the opposite direction (i.e. toward its equilibrium position |
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the number of cycles per second |
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is the time it takes for one cycle of vibration to occur |
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a wave in which individual cycles do not take the same amount of time to occur |
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the distance in meters or centimeters covered by one complete cycle of pressure change-that is, the distance covered by the wave from any starting point to the same point on the next cycle |
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has only one frequency and is graphed as a sinusoidal wave |
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a graph with time on the horizontal axis and amplitude on the vertical axis |
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waves that consist of two or more frequencies |
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lowest frequency of the sound |
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frequency above the funamental, also called harmoonics |
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the harmonics in a complex periodic sound can be identified through a process called fourier analysis |
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transiet sounds/continuous sounds |
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voiceless stops are complex aperiodic transient sound |
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extremely brief in duration |
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the horizontal axis represents frequency, starting with low frequencies to the left, with frequency increasing to the right |
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the relationship between the frequencies in the sound and their respective amplitudes |
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the envelope of the wave is shown as a horizontal line that is understood to connect all the component frequencies in the sound |
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cycle to cycle variations |
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a sound wave generated by a vibrating source |
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the damping of a wave, with diminishing changes in air pressure |
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sound that is not transmitted or absorbed bounces back from the surface of the boundary and travels in the opposite direction |
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a change in direction as a wave passes through an opening or travels around an obstacle |
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the combining of incident and relected waves at any instant in time and space |
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constructive interference |
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interference that results in increased amplitude |
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the amplitude of the resulting wave is decreased |
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relative timing of areas of high and low pressure in waves |
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sound that lasts slightly longer because of the interference |
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frequencies below that range of 20 hertz |
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frequencies about the range of 20,000 hertz |
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designed to measure sounds in a way that takes into account their amplitudes and intensities in relation to how the sound is perceived in terms of loudness |
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one in which units is the same distance from each other and units can be added or subtracted |
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units that increase by greater and greater amounts going up the scale |
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it reflects a relationship between quantities |
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the softest sound of a particular frequency that a pair of normal human ears can hear 50% of the time under ideal listening conditions |
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a graph that represents frequency along the horizontal axis and intensity along the vertical axis |
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a frequency with an intensity of around 130 decibels |
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a way of representing an individuals hearing by measuring his or her threshold at selected frequency levels |
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