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### 49 Cards in this Set

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 Accuracy freedom from miskate or error Precision the degree of refinement with which an operation is performed Meter (m) the SI unit of length Significant Digits the number of digits in a measurement or calculation which reflect the accuracy of the measurement Kilogram (kg) the SI unit of mass Cubic Meter (m^3) the SI unit of volume Liter (L) the SI unit of liquid volume Density mass divided by volume (grams/cm^3) Specific Gravity Density of an object divided by the density of water. In the metric system the value of specific gravity is the same as density without units. Vernier Caliper an instrument for measuring dimensions with high precision Speed the distance an object travels per unit time Velocity the speed of an object in a specific direction Average Velocity the distance the object moved divided by the time interval Instantaneous Velocity the speed at which an object is moving at any given instance Acceleration the change in velocity divided by the interval of time in which the change occurs. Acceleration Due to Gravity (g) constant acceleration of all freely falling bodies that are close to the earth Period the time to complete one vibration Mass the amount of matter in an object. Mass does not vary with location. Weight the gravitational force on an object. Weight varies with location Newton the SI unit of force Slope of a line tell how much it is inclined to the horizontal axis. The slope of the line of a graph is found by taking any two points on the line and dividing the rise by the run. Elastic Body a body that changes in size or shape upon the application of a distorting force but returns to its original condition upon the removal of that force Elastic Limit the greatest distortion a body can undergo and still return to its original shape Hooke's Law Within the elastic limit of a substance, the restoring force is proportional to the amount of displacement. F=kd Spring Constant the constant of proportionality in Hooke's Law equation Restoring Force a force produced in a body which is equal and opposite to the applied force Simple Harmonic Motion A motion in which the acceleration and the resoring force are at all times proportional to the displacement of a vibration body form the position of equilibrium and are directed towared the point. Amplitude the maximum distance that the vibrating body moves from its position of equilibruim (rest) Displacement the distance of the body from its position of equilibruim (rest) at any instant Period the time to complete one vibration Heat the energy that flows as a result of a temperature difference Specific Heat of a Substance (c) the amount of heat required to raise the temperature of one gram of any substance by one degree Celsius. Calorie the amount of heat required to raise the temperature of one gram of water by one degree Celsius Latent Heat of Fusion of Water the amount of heat required to melt one gram of ice at 0 degrees Celsius into one gram of water at 0 degree Celsius Latent Heat of Vaporization of water the amount of heat required to change one gram of water at 100 degree Celsius to one gram of steam at 100 degree Celsius Law of conservation of heat energy when heat is transferred from one substance to another, the heat lost from the one substance equals the heat gained by the other Calorimeter the inner aluminum can in the calorimeter apparatus in which heat exchange takes place Phase Change change of state from solid to liquid or from liquid to vapor Electric Change (Q) the amount of electricity an object contains Coulomb (C) the SI unit of Charge Electric Current (I) the rate at which electric change flows through a wire Ampere the SI unit of current Potential Difference or Voltage the electrical work required to move a unit positive charge from point A to point B Volt (v) the SI unit of potential difference/voltage Resistance (R) of a conductor the opposition the conduction gives to the flow of current through it Ohm the SI unit of resistance Power (p) the rate at which work is done Watt the SI unit of power Joule the SI unit of energy