Physics quantities

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Last updated: January 19, 2018

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First submitted	January 19, 2018
Times taken	44
Average score	35.3%
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Hint	Answer
The rate change of velocity, a vector quantity	Acceleration
The maximum displacement from the equilibrium position (waves)	Amplitude
The charge stored per unit potential difference across a capacitor	Capacitance
Defined as the energy transferred from chemical to electrical energy per unit charge	Electromotive force
The lowest frequency at which an object can vibrate	Fundamental frequency
The average time taken for half the number of active nuclei in a sample of an isotope to decay	Half-life
The strength of a magnetic field	Magnetic flux density
The difference between the displacements of particles along a wave, or the difference between the displacements of particles on different waves	Phase difference
Defined as the energy transferred from electrical energy to other forms per unit charge	Potential difference

Hint	Answer
A property of a component calculated by dividing the potential difference across it by the current in it	Resistance
The energy required per unit mass to change the temperature by 1K	Specific heat capacity
The extension per unit length, a dimensionless quantity	Tensile strain
Force per unit cross-sectional area	Pressure
The constant speed reached by an object when the drag force (and upthrust) is equal and opposite to the weight of the object	Terminal velocity
The product of one of the forces of a couple and the perpendicular distance between the forces	Torque
The minimum energy needed to remove a single electron from the surface of a particular metal	Work function
The ratio of tensile stress to tensile strain when these quantities are directly proportional to each other	Young modulus

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