Physics Specification Questions Overview of difficult parts of the spec 0.0 / 5 ? PhysicsForcesParticle physicsQuantum physicsASAQA Created by: geeraf97Created on: 30-11-14 16:24 What is the range of the strong nuclear force? Repellant from 0-0.5fm and attraction from 0.5-3fm. 1 of 28 Is a neutrino or an anti-neutrino produced in Beta - decay? An antineutrino 2 of 28 What is the equation for the energy of a photon? E=hf 3 of 28 What causes pair production? A high energy photon 4 of 28 What occurs in Beta+ decay? Proton to neutron, positron and neutrino 5 of 28 Name all the hadrons Proton, neutron, antiproton, antineutron, K mesons and Pi mesons 6 of 28 Name the types of quarks Up, Down and Strange 7 of 28 What is the quark structure of a neutron? UDD 8 of 28 What is the quark structure of a meson? One quark and one antiquark 9 of 28 What is conserved in strong force interaction? The baryon number, the lepton number and charge 10 of 28 What is the work function? The minimum amount of energy needed to remove an electron from the surface of a metal. 11 of 28 What is electron excitation caused by? Light behaving like a particle transferring energy to a surface electron in a metal causing it to leave the metal. 12 of 28 What characteristics of light suggest that it is a wave? Diffraction, refraction, reflection etc. 13 of 28 What characteristics of light suggest it is a particle? The photoelectric effect 14 of 28 What is potential difference? The work done per unit charge 15 of 28 What is current? The rate of flow of charge 16 of 28 What is ohms law? That voltage and current are directly proportional 17 of 28 What is resistivity? It's a property of a material that does not depend on the object (shape or size) 18 of 28 A superconducter has no resistance below the what? The critical temperature (often below 0 degrees celcius) 19 of 28 To begin a car engine you need? A very high current and low internal resistance 20 of 28 Name a use of a potential divider Street lights use potential dividers so they come on when it gets darker 21 of 28 In an oscilliscope what do the X plates control? The continuous movement of the electron beam from left to right. 22 of 28 What do oscilliscopes show? The wave forms of different currents 23 of 28 Where is the time base found on an oscilloscope screen? Along the X axis 24 of 28 What is conserved in a simple dc circuit? Charge and energy 25 of 28 Name some uses of a superconductor Power cables or very strong electromagnets 26 of 28 what is emitted when an electron de-excites? A photon 27 of 28 In Beta - decay which quark change takes place? A down quark to an up quark 28 of 28
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