More formally, it is the theoretical lower limit of the thermodynamic temperature scale, at which enthalpy and entropy of a cooled ideal gas reach their minimum values and the fundamental particles of nature have minimal vibrational motion. Acceleration and force are vectors; in this law the direction of the force vector is the same as the direction of the acceleration vector, For every action there is an equal and opposite reaction, the condition of a system in which competing influences are balanced, vector produced when two or more forces act upon a single object; calculated by addition of the force vectors, a vector that can cause an object with mass to accelerate, amount of force required to give a mass of 1 kg an acceleration of 1 m/s, force resisting the relative motion of two surfaces in contact, a body in motion remains in motion, a body at rest remains at rest, component, perpendicular to the surface of contact, of the contact force exerted by the surface, base unit of mass in the International System of Units, measurement of the gravitational force acting on an object, force that resists the movement of a solid through a liquid or gas, pictorial representation used to analyze to forces acting on a free body, showing all contact and non-contact forces acting on the body, when a free-falling object's upward force equals the force of gravity, causing the net force to be zero and resulting in an acceleration of zero, a pair of forces that are equal in magnitude and opposite in direction, globally accepted measurements for observations - meters (m), kilograms (kg), time (s), Kelvin (K), temperature/Celsius (C), international system of units (SI), a statement that is true and has been proven to be so by multiple repeated observations, a proposed scientific explanation made on the basis of limited evidence as a starting point for further investigation, a principle based on the predictable consequences of an act or condition, body of techniques for observations to gain knowledge, well-tested explanation that unifies a broad range of observations / a coherent group of general propositions used as principles of explanation for a class of phenomena, cannot be disproved - under the power of the leader, simply accepted by all (like school), based on (can be disproved by) observation or experience; practicing logic, using scientific method, encourages skepticism, distance travelled over time taken (change of distance over change of time), falling under the sole influence of gravity, a ratio indicating a relationship between 2 measurements with different or the same units, motion determined by a changeable reference point, rate of change of position, can be positive, negative, or zero (indicates direction of motion). The highest energy eaves in the electromagnetic spectrum, Gravitational Field Strength (Definition), The force of gravity acting on an object of mass 1kg, Gravitational Potential Energy (Abbreviation), Gravitational Potential Energy (Equation), GPE (J) = Weight (N) * Vertical Distance Moved (M), Gravitational Potential Energy (Definition), Energy of an object due to its position in a gravitational field. Components connected in a circuit so that the potential difference is the same across each one. (Or in the case of a diverging lens, A force can change the motion of an object, Fuel obtained from long dead biological material, Electron that moves around freely inside a metal and is not held inside an atom, The number of wave crests passing a fixed point every second, The number of complete cycles an alternating current passes through each second, Forces opposing the movement of one surface over another, Contains a thin wire that melts and cuts the current if too much current is passing through it. It cannot be projected, The unit of potential difference. Check the boxes below to ignore/unignore words, then click save at the bottom. The faster the speed of the star or galaxy, The change of direction of a light ray when it passes across a boundary between two transparent substances (including air). In metals it occurs at very low temperatures, but higher temperature superconductivity occurs in some ceramic materials, the state of being or property of becoming a superfluid, a property of liquids caused by intermolecular forces near the surface leading to the apparent presence of a surface film and to capillarity, etc, an unstable, negatively charged lepton with a mass of, a force that tends to produce an elongation of a body or structure, the constant maximum velocity reached by a body falling under gravity through a fluid, esp the atmosphere, a device that maintains a system at a constant temperature. Usually connected together in solar cell panels. The difference between the sum of the clockwise and anticlockwise moments and the anticlockwise moments if they are not equal. The sample absorbs energy, i.e., photons, from the radiating field. When fission neutrons cause further fission, so more fission neutrons are released. The law is now known to be only true for ideal gases, a substance, body, or system that conducts electricity, heat, etc, the process by which masses of relatively warm air are raised into the atmosphere, often cooling and forming clouds, with compensatory downward movements of cooler air, a radiation of high penetrating power that originates in outer space and consists partly of high-energy atomic nuclei, the derived SI unit of electric charge; the quantity of electricity transported in one second by a current of 1 ampere, a flow of electric charge through a conductor, a type of particle accelerator in which the particles spiral inside two D-shaped hollow metal electrodes placed facing each other under the effect of a strong vertical magnetic field, gaining energy by a high-frequency voltage applied between these electrodes, a unit for comparing two currents, voltages, or power levels, equal to one tenth of a bel, a measure of the compactness of a substance, expressed as its mass per unit volume. 1 joule is equivalent to 1 watt-second, 10, the basic SI unit of thermodynamic temperature; the fraction, the energy of motion of a body, equal to the work it would do if it were brought to rest. Get the latest news and gain access to exclusive updates and offers, the time taken for half of the atoms in a radioactive material to undergo decay, the emission or transfer of radiant energy as particles, electromagnetic waves, sound, etc, the spontaneous emission of radiation from atomic nuclei. Can be projected, A star that has expanded and cooled resulting in it becoming much larger and cooler than it was before it expanded, Increase in the wavelength of electromagnetic waves emitted by a star or galaxy due to its motion away from us. The constant of proportionality is the resistance of the conductor, a body with finite mass that can be treated as having negligible size, and internal structure, the derived SI unit of pressure; the pressure exerted on an area of 1 square metre by a force of 1 newton; equivalent to 10 dynes per square centimetre or 1.45 × 10, a fundamental constant equal to the energy of any quantum of radiation divided by its frequency. absolute zero The theoretical lowest possible temperature, understood by international agreement as equivalent to 0 Kelvin or −273.15 °C (−459.67 °F). X-rays have wavelengths shorter than that of ultraviolet radiation, that is less than about 1 × 10. Physics keys words for KS3 with a VI (24pt) font too. Line in a magnetic field along which a magnetic compass points. High values of V indicate low dispersion. amount of force required to give a mass of 1 kg an acceleration of 1 m/s. It is the magnitude of the real part of the impedance and is measured in ohms, a unit of activity equal to the quantity of a radioactive nuclide required to produce one million disintegrations per second, a device, such as a transistor or integrated circuit, that depends on the properties of such a substance, a form of periodic motion of a particle, etc, in which the acceleration is always directed towards some equilibrium point and is proportional to the displacement from this point, the distribution of colours produced when white light is dispersed by a prism or diffraction grating.

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