State Newton's 1st Law.

A body/mass/object continues (at rest or) at constant/uniform velocity unless acted on by a resultant force.

State Newton's 2nd Law.

Resultant force is proportional/equal to the rate of change of momentum.

State Newton's 3rd Law.

Force on body A (by body B) is equal (in magnitude) to force on body B (by body A) and opposite (in direction). force on body A (by body B) is opposite (in direction) to force on body B (by body A)

What is the moment of force?

Force × perpendicular distance (of line of action of force) to/from a point.

What are the conditions to be in equilibrium?

Resultant force (in any direction) is zero.

Force x displacement in the direction of the force.

What is kinetic energy?

Energy (of a mass/body) due to motion / speed / velocity.

Define stress in materials.

Force / (cross-sectional) area.

Define elastic potential energy.

The energy stored (in an object) due to extension / compression / change of shape.

What is Young's modulus?

Young modulus = stress / strain.

Define a transverse wave.

Vibrations of wave are perpendicular to the direction of the propagation of energy.

What is diffraction of a wave?

Wave passes through an edge, wave spreads.

What is the period in waves?

Time for one oscillation/vibration/cycle.

Distance between two adjacent wavefronts.

What are the conditions to form a stationary wave?

(Two) waves (travelling at same speed) in opposite directions overlap and have same frequency / wavelength. (waves are same type and) have same frequency / wavelength

What is the Doppler effect?

Change in frequency when source moves relative to observer.

Define frequency in sound waves.

Frequency is the number of vibrations/oscillations per unit time or the number of wavefronts passing a point per unit time.

What are longitudinal waves?

Vibrations/oscillations (of the particles/wave) are parallel to the direction of the propagation of energy. direction or in the same direction (of the propagation of energy)

What is the principle of superposition?

When two or more waves meet/overlap (at a point), the resultant displacement is the sum of the individual displacements. (resultant) displacement is sum of the individual displacements

Position where maximum amplitude occurs.

What is electrical potential difference?

Energy transferred per unit charge from electrical to other forms.

What is a field line in an electric field?

Path/direction in which a (free) positive charge will move.

Define electric field strength.

Force per unit positive charge.

What does quantised mean in terms of charge?

Charge exists only in discrete amounts.

State Kirchhoff's 2nd Law.

Sum of electromotive force = sum of potential difference around a closed loop.

State Kirchhoff's 1st Law.

Sum of current(s) into junction = sum of current(s) out of junction.

Energy transferred from chemical to electrical (per unit charge).

Energy transferred from electrical to thermal (per unit charge).

AS Physics Flashcards

Student preview

46 questions

Show all answers

1.

FLASHCARD QUESTION

Front

vector quantity

Back

A quantity with magnitude and direction.

2.

FLASHCARD QUESTION

Front

precision

Back

Precision is determined by the range in the measurements/values/readings/data/results.

3.

FLASHCARD QUESTION

Front

acceleration

Back

Rate of change of velocity

4.

FLASHCARD QUESTION

Front

What is velocity?

Back

Change in displacement / time.

5.

FLASHCARD QUESTION

Front

What is momentum?

Back

Product of mass and velocity.

6.

FLASHCARD QUESTION

Front

State the principle of conservation of momentum.

Back

The sum/total momentum of a system of bodies is constant.

7.

FLASHCARD QUESTION

Front

What is the center of gravity of an object?

Back

Point where the weight is taken to act.

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