Define the Centre of Mass of an object

The Centre of Mass of an object is the point in/on the object where the mass is assumed to be concentrated.

Hooke's Law states that the force needed to extend or compress a spring is proportional to the distance it is stretched or compressed, provided that the limit of proportionality is not exceeded.

Define Limit of Proportionality

The limit of proportionality is the point beyond which Hooke's Law no longer applies.

What is the Principle of Moments?

The principle states that for an object in equilibrium, the sum of clockwise moments about a point equals the sum of counterclockwise moments.

Define the Principle of Conservation of Energy

The principle states that energy cannot be created or destroyed; it can only be transformed.

Define Kinetic Energy

Kinetic energy is the energy possessed by an object due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Explain the concept of gravitational potential energy.

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

What is meant by the kinetic energy of an object?

Kinetic energy is the energy an object possesses due to its motion.

Define "efficiency" of a system

Efficiency is the ratio of useful output energy to input energy, expressed as a percentage.

Define Thermal Expansion

Thermal expansion is the increase in the volume of a material as its temperature increases.

Define thermal equilibrium

Thermal equilibrium is the state in which two objects in contact do not exchange heat.

Define Specific Heat Capacity

Specific heat capacity is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius.

Define the wavelength of a wave

The wavelength is the distance between successive crests of a wave. OR The wavelength is the distance between two successive troughs of a wave.

Define the period of a wave

The period of a wave is the time taken for one complete cycle of the wave.

Define the frequency of a wave

Frequency is the number of complete cycles of a wave that occur in a second

Define Longitudinal Waves

Longitudinal waves are waves in which the particle vibration is parallel to the direction of wave propagation.

Define Transverse Waves

Transverse waves are waves in which the particle vibration is perpendicular to the direction of wave propagation.

What is the Law of Reflection?

The Law of Reflection states that the angle of incidence is equal to the angle of reflection when a wave reflects off a surface.

What is the formula for calculating frequency?

Frequency is calculated using the formula: Frequency (f) = 1 / Period (T).

Define the amplitude of a wave.

Amplitude is the maximum displacement of points on a wave from its rest position.

What is refraction of waves?

Refraction is the bending of waves as they pass from one medium to another. OR Refraction is the change in speed of waves as they pass from one medium to another.

What is diffraction of waves?

Diffraction is the spreading of waves when they encounter an obstacle or an opening.

What is the speed of light in a vacuum?

The speed of light in a vacuum is approximately 299,792 kilometers per second.

What is the refractive index of a medium?

The refractive index is a measure of how much light slows down in a medium compared to a vacuum.

What is the formula to calculate the refractive index of a medium?

Refractive index = speed of light in vacuum / speed of light in the medium.

Define dispersion of white light?

Dispersion is the separation of white light into its constituent colors.

List all the electromagnetic waves from highest frequency to lowest frequency.

Gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, radio waves.

What is the average speed of sound waves in water?

The average speed of sound in water is approximately 1,480 meters per second.

What is the definition of a conductor?

A conductor is a material that allows the flow of electric charge, typically electrons, due to its free electrons.

What is the average speed of sound in copper cable?

The average speed of sound in copper is approximately 4,700 meters per second.

Define electric current

Electric current is the flow of electric charge in a circuit.

Define potential difference

Potential difference is the difference in electric potential between two points.

Define Electrical Power

Electrical power is the rate at which electrical energy is transferred by an electric circuit.

Define Electric Field

An electric field is a region around a charged particle where a force is exerted on other charged particles.

What is "charging by induction"?

Charging by induction is the process of charging an object without direct contact.

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across those two points.

Define Magnetic Field

A magnetic field is a region around a magnetic material or a moving electric charge, within which the force of magnetism acts.

What is the Motor Effect?

The motor effect is the phenomenon in which a current-carrying conductor experiences a force when placed in a magnetic field.

What is the "Electromagnetic Induction" process?

Electromagnetic induction is the process of generating electric current from a changing magnetic field. OR Electromagnetic induction is the process by which a conductor moved through a magnetic field experiences a change in magnetic flux, causing an emf to be induced in the conductor.

Which experiment proves the existence of the nucleus of an atom?

It is called Rutherford's Gold Foil Experiment.

an atom that has the same number of protons and electrons

An isotope is an atom of the same element that has the same proton number but a different nucleon number.

What is the radioactive decay process?

The radioactive decay process is the process by which unstable nuclei break down into a more stable nucleus while releasing energy.

What are the three types of radiation emitted during a radioactive decay?

The radiations are alpha particles, beta particles and gamma rays.

Physics Concepts Flashcards Flashcards

Student preview

57 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Define Velocity

Back

Velocity is the rate of change of displacement of an object.

2.

FLASHCARD QUESTION

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction of motion.

3.

FLASHCARD QUESTION

Front

Define Acceleration

Back

Acceleration is the rate of change of velocity of an object.

4.

FLASHCARD QUESTION

Front

Define momentum

Back

Momentum is the product of an object's mass and its velocity.

5.

FLASHCARD QUESTION

Front

Define Impulse

Back

Impulse is the change in momentum resulting from a force applied over time.

6.

FLASHCARD QUESTION

Front

Define Impulsive Force

Back

An impulsive force is a force that acts for a very short duration.

OR

It is the rate of change of momentum.

7.

FLASHCARD QUESTION

Front

What is the Principle of Conservation of Momentum?

Back

The principle states that the total momentum of a closed system remains constant.

OR

Total momentum before a collision is equal to the total momentum after the collision, provided that there is no external force acting on the system.

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