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Physics

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
momentum   show
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show product of force and time over which a force acts  
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impulse-momentum theorem   show
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show the total momentum of all objects interacting with one another remains constant regardless of the nature of the forces between the objects  
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perfectly elastic collision   show
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show A collision in which two objects stick together completely after colliding  
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show Inelastic collisions lose kinetic energy that is used to deform the objects. Elastic collisions conserve kinetic energy.  
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show movement in a circle or spinning  
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radian   show
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show change in angle  
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angular speed   show
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show rate of change in angular speed  
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show rate of change in linear velocity  
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show acceleration toward the center of a circle  
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centripetal force   show
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gravitational force   show
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show the lowest velocity that a body must have in order to escape the gravitational attraction of a particular planet or other object  
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torque   show
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show The radius times the sine of the angle  
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show point at which the mass of a body can be considered to be concentrated  
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show tendency of an object to resist a change in rotational motion  
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rotational equilibrium   show
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show The torque of an object will equal it's moment of inertia times it's angular acceleration  
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angular momentum   show
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show angular momentum is conserved as long as there are no external torques  
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rotational kinetic energy   show
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efficiency   show
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show a non-solid state of matter in which the atoms of molecules are free to flow  
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show concentration of matter in an object  
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buoyant force   show
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show an object completely or partially submerged in a fluid experiences an upward force buoyant force equal in magnitude to the weight of the fluid displaced by the object  
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negative buoyancy   show
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show Buoyant force is greater than downward force so the object floats  
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show gravitational force minus buoyant force, objects in fluids appear to weigh less  
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pressure   show
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show pressure applied to a fluid in a closed container is transmitted equally to every point of the fluid and to the container  
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show The gauge pressure plus the atmospheric pressure  
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show measure of the average kinetic energy of the particles in a substance  
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show the resistance to flow of a fluid  
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laminar flow   show
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turbulent flow   show
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Venturi effect   show
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show the pressure in a fluid decreases as the velocity of the fluid increases  
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Bernoulli's equation   show
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show (P1V1)/T1= (P2V2)/T2  
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show the energy of a substance due to both the random motion of it's particles and to the potential energy that results from the distances and alignments  
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thermal equilibrium   show
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show in general, increasing the temperature of a substance increases it's volume  
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thermometer calibrations   show
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Celsius to Kelvin conversion   show
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Celsius to Fahrenheit conversion   show
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heat   show
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show the quantity of heat required to raise a unit mass of homogenous material  
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show An experimental procedure used to measure the energy from one to another as heat. Hot objects are placed into a calorimeter and changes in temperature are recorded.  
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show the energy per unit mass that is transferred during a phase change of a substance  
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phase change   show
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latent heat of fusion   show
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show amount of energy needed to boil one kilogram  
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thermal conduction   show
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show in cold climates, clothes are made out of thermal insulators that trap air in so your body heat stays in. In hot climates, clothes are worn that cast off heat easily.  
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Hooke's law   show
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simple harmonic motion   show
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spring constant   show
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elastic potential energy   show
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show a weight hung from a fixed point so that it can swing freely backward and forward  
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show the maximum displacement from equilibrium  
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show the times it takes a complete cycle to occur  
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show the number of cycles or vibrations per unit of time  
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medium   show
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mechanical wave   show
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pulse wave   show
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show wave formed by the periodic motion of a wave source  
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crest   show
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show lowest point below equilibrium position  
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show a wave whose particles vibrate periodically  
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show a wave whose particles vibrate parallel to the direction the wave is traveling  
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compressional wave   show
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show speed at which a mechanical wave travels depends on medium  
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constructive interference   show
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show a superposition of two or more waves in which individual displacements on opposite sides of the equilibrium position are added together to form the resultant wave  
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reflection   show
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show a wave pattern that results when two waves of the same frequency, wavelength, and amplitude travel in opposite directions and interfere.  
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show region of a longitudinal wave in which the density and pressure are at a maximum  
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rarefaction   show
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show a measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave  
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Doppler effect   show
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show the rate at which energy flows through a unit area perpendicular to the direction of the waves  
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show human perception of sound intensity  
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show a dimensionless unit that describes the ratio of two intensities of sound  
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show based off of the threshold of human hearing; every increase in 10dB is equal to ten times the intensity of sounds  
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show the frequency at which an object will vibrate when set in motion  
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show a phenomenon that occurs when the frequency of a force applied to a system matches the natural frequency of vibration of the system, resulting in a large amplitude of vibration  
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human hearing   show
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overtones   show
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