Flashcard Set Preview
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| 1 |
displacement
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distance in a given direction
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velocity
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speed in a given direction
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speed
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rate at which a moving object covers distance
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acceleration
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rate of change of velocity in a given direction
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linear momentum
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the quantity of motion of a moving body, measured as a product of mass and velocity
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impulse
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a force acting briefly on a body and producing a finite change of momentum, Force times change...
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power
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the rate of working, work/time
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efficiency
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the ratio of the useful work performed by a machine or in a process to the total energy expended...
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| 9 |
mole
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amount of substance that contains as many elementary particles as there are in 0.012 kg of...
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| 10 |
molar mass
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the mass in grams of one mole of a substance
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| 11 |
Avogadro constant
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the number of atoms or molecules in one mole of a substance, equal to 6.023 × 10^23
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| 12 |
specific heat capacity
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the quantity of thermal energy required to raisse the temperature of one kilogram of a substance...
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| 13 |
thermal capacity
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the number of heat units needed to raise the temperature of a body by one degree
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| 14 |
specific latent heat
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the thermal energy which a particle absorbs or releases when changing phases.
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| 15 |
pressure
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force exerted over an area
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displacement (oscillations)
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the distance from its equilibrium position at any particular instant during the oscillation
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amplitude
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the maximum displacement of an oscillating system from its equilibrium position
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frequency
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the number of complete oscillations made by the system in one second
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period
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the time for one complete oscillation
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| 20 |
phase difference
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the difference in phase between two oscillating systems
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| 21 |
simple harmonic motion
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motion if the(1) acceleration of a system is directly proportional to its displacement from...
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| 22 |
displacement (wave)
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distance from its equilibrium position to any particular instant during the oscillation
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| 23 |
amplitude (wave)
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maximum displacement of a particle from its equilibrium position
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| 24 |
frequency (wave)
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number of oscillations made per second by a particle
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| 25 |
period
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the time it takes for a particle to make one complete oscillation
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| 26 |
wavelength
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distance along the medium between two successive particles that have the same displacement
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wave speed
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the speed with which energy is carried in the medium by the wave
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| 28 |
intensity
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the energy that a wave transports per unit time across unit area of the medium through which...
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| 29 |
electric potential difference
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work done per unit charge to move a positive test charge from point A to point B; V = W/q;...
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| 30 |
electron-volt
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The energy acquired by an electron as it moves through a potential difference of 1 volt; 1...
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electric current
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the flow of charged particles through a material when a potential difference is applied across...
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| 32 |
resistance
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a measure of how difficult a charge can flow in a material; Unit: Ohms (Ω); R = V/I
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electromotive force (emf)
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the amount of energy per unit charge supplied to a circuit by a power source
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| 34 |
gravitational field strength
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Every material particle in the Universe attracts every other material particle with - a force...
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| 35 |
electric field strength
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the force per unit charge exerted on a positive test chargeE = F/q
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| 36 |
magnitude & direction (magnetic field)
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F = IlBsin(theta); F = force, I = current, L = the length of the conductor in the magnetic...
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nucleon number (A)
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number of particles in the nucleus
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| 38 |
proton number (Z)
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number of protons in the nucleus
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neutron number (N)
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number of neutrons in the nucleus
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| 40 |
radioactive half-life
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the time it take the activity of a sample of the element to halve in value or the time it takes...
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| 41 |
unified atomic mass unit
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1/12 the mass of a nucleus of carbon-12 or, to put it another way, a carbon nucleus as a mass...
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| 42 |
mass defect (concept)
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extra energy left after a physics reaction
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| 43 |
binding energy (concept)
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the energy required to separate the nucleus into its individual nucleons or the energy that...
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| 44 |
binding energy per nucleon (concept)
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the more energy required to separate the nucleus into its individual nucleons, the more stable...
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