point where all the weight of an object is considered to be acted upon

an object continues to be at rest or constant velocity, unless resultant force is acted upon it

resultant force is proportional to rate of change of momentum

product of force and the displacement in the direction of the force

Principle of conservation of energy

in an isolated system, where no external force is acts on it, total momentum before collision equals to the sum of total momentum after collision

Conditions for equilibrium

1.)resultant force in any direction is zero 2.) resultant force about any point is equal to zero

energy of a mass due to velocity

for a system to be in equilibrium, sum of the clockwise moment about a point is equal to the sum of anticlockwise moment about the same point

product of force and the perpendicular distance of the force, from the pivot

time, mass, current, length, temperature (K), mole (mol), luminosity intensity (cd)

stress = normal force per unit cross-sectional area strain = extension per unit original length

provided limit of proportionality is not exceeded, the force applied to a string, is directly proportional to the extension of the spring

elastic potential energy

energy stored by a body due to its extension

maximum force that can be applied to a wire, such that the wire returns to its original length

wave in which the vibration of the particles in the waves oscillates at right angles to the direction in which the energy travels

wave in which the direction of the vibrations of the particles in the wave is oscillating at parallel directions to which the energy travels

why at that point, fringe dont show greatest intensity

for maximum intensity, waves must be in phase. If there is phase difference, intensity wont reach its max

oscillations that are in a single direction, perpendicular to direction of propagation

Principle of superposition

when two or more waves overlap at a point, the resultant displacement is equal to the sum of the displacement between the two waves

diffraction of a wave

as wave passes through an aperture, it causes the wave to spread

Formation of stationary wave

waves that are travelling along a string are reflected on a fixed point. results in two waves travelling with same speed, frequency and wavelength, but opposite direction, superposition of these two occurs

potential difference per unit current

energy transferred per unit charge (from electrical energy to another form)

sum of emf forces in a loop is equal to the sum of p.d across the same loop. This is due to the consequence of the law of conservation of energy

the sum of the currents entering the junction, is equal to sum of current leaving the same junction. Due to law of conservation of charge.

current is directly proportional to the potential difference, provided temperature is constant

physics definitions Flashcards

Student preview

37 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Precision and accuracy

Back

precise - measurements have small range
accurate - average measurements close to true value

2.

FLASHCARD QUESTION

Front

vector quantity

Back

having magnitude and direction

3.

FLASHCARD QUESTION

Front

velocity

Back

change in displacement over time

4.

FLASHCARD QUESTION

Front

acceleration

Back

rate of change of velocity

5.

FLASHCARD QUESTION

Front

Momentum

Back

product of mass and velocity

6.

FLASHCARD QUESTION

Front

Density

Back

force per unit area, where force is acting normally to the area

7.

FLASHCARD QUESTION

Front

Displacement

Back

distance of a point to another point, from a straight line showing direction

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