Physics crossword 1 0.0 / 5 ? PhysicsGeneralA2/A-levelOCR Created by: EMHartley13Created on: 17-05-17 15:13 6425317 Across 1. the number of complete oscillations in unit time (for a simple harmonic oscillator) (9) 4. a squashing force. An object is in * when two forces act in opposite directions to make the object * (squash) along the line of action of the forces (11) 7. a vector quantity, the result of mass x velocity (8) Down 2. Einstein's theory of motion based on his two postulates (7, 10) 3. the ratio of the speed of light in a vacuum to the speed of light in the material. Also given (Snell's law) as the ratio of the sine of the angle of incidence to the sine of the angle of refraction as the light enters the transparent material (10, 5) 5. when waves travel from one point to another by two or more routes, the difference in the distance travelled by each wave is the *. It introduces a time delay, so that the phases of the waves differ when they meet, this generates interference effects (4, 10) 6. a group of fundamental particles that include the electron and the neutrino (6)
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