PHYSICS

98 cards | Total Attempts: 189 | Created by sk01458 | Last updated: Apr 13, 2016 | Total Attempts: 189

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Alpha Decay

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Cards In This Set

Front	Back
Alpha Decay	A nuclear reaction in which an $A nuclear reaction in which an particle () is emitted:$ particle ( $A nuclear reaction in which an particle () is emitted:$ ) is emitted: $A nuclear reaction in which an particle () is emitted:$
Gamma Decay	A nuclear reaction in which high-energy photons, also known as y-particles, are emitted: $A nuclear reaction in which high-energy photons, also known as y-particles, are emitted:$
Capacitor	An electric device used in circuits that is composed of two conducting plates separated by a short distance; these devices store electric charge.
Mass	A scalar quantity used as a measure of an object's inertia.
Ohm's Law	Law stating that the voltage drop across a resistor is proportional to the current flowing through it, given by the equation V=IR.
Wave Speed	The speed of a wave, which is related to its frequency and wavelength by the equation $The speed of a wave, which is related to its frequency and wavelength by the equation .$ .
Displacement	A vector quantity describing the straight-line distance between an initial and a final position of some particle or object.
Electromagnetic Waves	When an electric field is changing, it causes a change in a magnetic field and vice-versa, resulting in the propagation of a wave containing an electric and a magnetic field that are perpendicular to each other.
Exponential Decay	A decrease in the amount of substance N at an exponential rate. Given by the equation: $A decrease in the amount of substance N at an exponential rate. Given by the equation:$
Current	A flow of charge per time. The flow of charge is motivated by a potential difference (voltage). Current is denoted I and can be calculated as $A flow of charge per time. The flow of charge is motivated by a potential difference (voltage). Current is denoted I and can be calculated as . Current is conventionally considered the theoretical movement of positive charge.$ . Current is conventionally considered the theoretical movement of positive charge.
Electric Circuit	A conducting pathway that contains one or more voltage sources that drive an electric current along that pathway and through connected passive circuit elements (such as resistors).
Elastic Potential Energy	The energy associated with stretching or compressing a spring, calculated by the equation $The energy associated with stretching or compressing a spring, calculated by the equation and given in the SI unit of joules (J).$ and given in the SI unit of joules (J).
Potential Difference	The difference in electric potential between two points in an electric field, also called the voltage ( $The difference in electric potential between two points in an electric field, also called the voltage ().$ ).
Center of Mass	The point of some object or body where all of its mass is considered to be concentrated. In a uniform gravitational field, this is also the center of gravity.
Half-Life	The amount of time it takes for one-half of a radioactive sample to decay, given by the equation $The amount of time it takes for one-half of a radioactive sample to decay, given by the equation , where is a decay constant.$ , where $The amount of time it takes for one-half of a radioactive sample to decay, given by the equation , where is a decay constant.$ is a decay constant.