Physics paper 2

    Cards (78)

    • The speed of light is the maximum possible speed
    • Electromagnetic waves are transverse waves that travel through space at the speed of light.
    • Radio waves have the longest wavelength, while gamma rays have the shortest wavelength.
    • Infrared radiation has a longer wavelength than visible light but shorter than radio waves.
    • Ultraviolet radiation has a shorter wavelength than visible light but longer than X-rays.
    • X-rays have a shorter wavelength than ultraviolet radiation but longer than gamma rays.
    • Gamma rays have the shortest wavelength and highest frequency among all types of electromagnetic radiation.
    • Visible light can be seen by the human eye, while other forms of electromagnetic radiation cannot.
    • Different colors of light correspond to different frequencies or wavelengths.
    • The energy of an electron is directly proportional to its velocity (e = ½ mv^2).
    • When an electric current flows through a wire, it creates a magnetic field around the wire.
    • A changing magnetic field induces a potential difference across a conductor.
    • The color red corresponds to lower energy photons with longer wavelengths, while violet corresponds to higher energy photons with shorter wavelengths.
    • Higher frequencies carry more energy per photon compared to lower frequencies.
    • The energy carried by an electromagnetic wave is proportional to its frequency (E = hf).
    • Electric fields are created when there is an imbalance between positive and negative charges.
    • Electrons are negatively charged particles that orbit around the nucleus of atoms.
    • Different colors of light correspond to different energies due to their varying frequencies.
    • A charged object will create an electric field around it that exerts forces on nearby objects.
    • When an atom gains or loses electrons, it becomes ionized.
    • An alternating voltage produces an alternating current that oscillates between positive and negative values.
    • An alternating voltage produces an alternating current.
    • Electricity is produced when moving charges create a magnetic field that interacts with another magnetic field.
    • Ionization occurs when an atom gains or loses one or more electrons, resulting in a net positive charge on the remaining protons and neutrons.
    • Electricity can flow along a path with no resistance if there are no obstacles in the way.
    • In a series circuit with multiple resistors, the total resistance is equal to the sum of individual resistances.
    • Increasing the speed of charged particles increases their kinetic energy.
    • In a parallel circuit with multiple resistors, the equivalent resistance is less than any single resistance.
    • Electric fields can be created by moving charges or changes in magnetic fields.
    • Magnetic fields are created when moving charged particles create a force on other charged particles.
    • An electromagnet produces a magnetic field when a current passes through a coil of wire.
    • An increase in temperature causes more collisions between molecules, resulting in increased thermal energy.
    • Magnetic fields are produced by moving charges or changes in electric fields.
    • Infrared radiation has a long wavelength and low frequency, making it less energetic than visible light.
    • When electrically charged objects move through space, they create magnetic fields.
    • Magnetism can be used as a force to attract or repel other magnets.
    • Ultraviolet radiation has a short wavelength and high frequency, making it more energetic than visible light.
    • An electron volt (eV) is a unit used to measure the amount of kinetic energy gained or lost by an electron as it moves through an electrical potential difference.
    • An electron volt (eV) is a unit used to measure the amount of kinetic energy gained by an electron as it moves through a potential difference of one volt.
    • A magnet has two poles - north and south - which always face opposite directions.