Vocab words, key formulas
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Absolute zero | The lowest theoretical temperature a material can have, where the molecules that make up the material hae no kinetic energy. Absollute zero is reached at 0K or -273C
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| Acceleration | A vector quantity defined as the rate of change of the velocity vector with time
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| Activity | In radioactive substances, the number of nuclei that decay per second. Activity, A, will be larger in large samples of radioactive material, since there will be more nuclei.
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| Alpha Decay | A form of radioactive decay where a heavy element emits an alpha particle and some energy, thus transforming into a lighter, more stable, element.
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| Alpha Particle | A particle, a, which constits of two protons and two neutrons. It is identical to the nucleus of a helium atom and is ejected by heavy particles undergoing alpha decay
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| Amplitude | Measures the amount of energy a system has
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| Angle of incidence | When a light ray strikes a surface, the angle of incidence is the angle between the incident ray and the normal.
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| Angle of reflection | the angle between a reflected ray and the normal
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| Angle of refraction | the angle between and refracted ray and the line normal to the surface
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| Angular acceleration | A vector quantity, a, equal to the rate of change of the angular velocity vector with time. It is tipically given in units of rad/s squared
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| Angular displacement | The net change, (-), in a poin't angular position, (/). It is a scalar quantity
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Created by:
kk2010
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