Matter and radiation 0.0 / 5 ? PhysicsRadioactivityMaterialsA2/A-levelAQA Created by: Fishman2016Created on: 24-02-18 14:25 Which particle has the largest specific charge? The electron. 1 of 12 What is an isotope? A variation of an element with the same number of protons to the original but a different number of neutrons. 2 of 12 What do you work out specific charge? Charge / Mass 3 of 12 Name the four fundamental forces. The strong force, the weak force, gravity and the electromagnetic force. 4 of 12 What is the strong force? The force between nucleons which holds them in the nucleus. 5 of 12 What is the range of the strong force? Between 0.5 and 3 femtometres. 1 femtometre is the optimum distance. 6 of 12 What is annihilation? The conversion of a particle and an antimatter particle into electromagnetic radiation. 7 of 12 What is the order of the EM spectrum from largest wavelength to the smallest. Radiowaves, microwaves, infra-red, visible light, ultra-violet, x-ray and finally gamma. 8 of 12 How do you calculate the energy of a photon? Planck's constant (h) * frequency (f) = Planck's constant (h) * speed of light (c) / wavelength (lander) 9 of 12 What is matter? Matter is trapped energy 10 of 12 What is an electron volt (eV)? A unit of energy equal to the energy gained when an electron is accelerated by a potential difference of 1V. 11 of 12 How do you convert to electron volts? Divide by the charge of an electron (1.6*10^-19) 12 of 12
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