Modelling Physics

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Across
  1. 3. The energy required the change the phase per unit mass while at constant temperature.
  2. 6. The acceleration of an oscillating object is directly proportional to the displacement in the opposite direction. (a∝-x)
  3. 7. A satellite that must be in orbit above the Earth’s equator, rotate in the same direction as the Earth’s equator and have an orbital period of 24 hours.
  4. 11. The upthrust exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces.
  5. 12. The energy required per unit mass to change the temperature by 1 K (or 1°C)
  6. 14. A material that can be drawn in to wires or hammered in to sheets.
  7. 16. One of the forces multiplied by the perpendicular separation between the forces.
  8. 17. The distance at which the radius of 1 AU subtends an angle of one arcsecond.
  9. 19. An imaginary point where the entire weight of an object appears to act.
  10. 20. The total radiant power of a star.
  11. 21. When an external force acts on an oscillator and has the effect of reducing the amplitude of oscillations.
  12. 24. Momentum is conserved but KE is not conserved.
  13. 25. The work done per unit mass to move an object to that point from infinity.
  14. 28. Momentum is conserved and KE is conserved.
  15. 29. When a mechanical system is allowed to oscillate without any external forces acting on it.
  16. 31. When viewed on a large enough scale the universe is homogenous and isotropic and the laws of physics are universal.
  17. 32. When the driving frequency of a forced oscillator is equal to the natural frequency of the oscillating object.
Down
  1. 1. The maximum stress that a material can withstand when being stretched before it breaks.
  2. 2. The total momentum of objects before a collision is equal to the total momentum of objects after a collision in a closed system.
  3. 4. The distance travelled between the moment when you first see a reason to stop, to the moment when you use the brake.
  4. 5. The sum of the randomly distributed kinetic and potential energies of atoms or molecules within the substance.
  5. 8. The distance travelled by light in a vacuum in one year.
  6. 9. The gravitational force exerted per unit mass on a small object placed at that point within a field
  7. 10. The material will return to its original shape once a force is removed.
  8. 13. The work done to move the mass from infinity to a point in a gravitational field.
  9. 15. The period of an oscillator remains constant regardless of a change in the amplitude.
  10. 18. The distance travelled from the time the brake is applied until the vehicle stops.
  11. 22. The drag force is equal to the weight. The resultant force is zero and there is zero acceleration.
  12. 23. Matter is distributed uniformly across the universe.
  13. 26. When two objects are in thermal equilibrium, there is no net flow of thermal energy between them and so must be at the same temperature.
  14. 27. The material will not return to its original shape once a force is removed.
  15. 30. The universe looks the same in all directions.