Across
- 3. The energy required the change the phase per unit mass while at constant temperature.
- 6. The acceleration of an oscillating object is directly proportional to the displacement in the opposite direction. (a∝-x)
- 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.
- 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.
- 12. The energy required per unit mass to change the temperature by 1 K (or 1°C)
- 14. A material that can be drawn in to wires or hammered in to sheets.
- 16. One of the forces multiplied by the perpendicular separation between the forces.
- 17. The distance at which the radius of 1 AU subtends an angle of one arcsecond.
- 19. An imaginary point where the entire weight of an object appears to act.
- 20. The total radiant power of a star.
- 21. When an external force acts on an oscillator and has the effect of reducing the amplitude of oscillations.
- 24. Momentum is conserved but KE is not conserved.
- 25. The work done per unit mass to move an object to that point from infinity.
- 28. Momentum is conserved and KE is conserved.
- 29. When a mechanical system is allowed to oscillate without any external forces acting on it.
- 31. When viewed on a large enough scale the universe is homogenous and isotropic and the laws of physics are universal.
- 32. When the driving frequency of a forced oscillator is equal to the natural frequency of the oscillating object.
Down
- 1. The maximum stress that a material can withstand when being stretched before it breaks.
- 2. The total momentum of objects before a collision is equal to the total momentum of objects after a collision in a closed system.
- 4. The distance travelled between the moment when you first see a reason to stop, to the moment when you use the brake.
- 5. The sum of the randomly distributed kinetic and potential energies of atoms or molecules within the substance.
- 8. The distance travelled by light in a vacuum in one year.
- 9. The gravitational force exerted per unit mass on a small object placed at that point within a field
- 10. The material will return to its original shape once a force is removed.
- 13. The work done to move the mass from infinity to a point in a gravitational field.
- 15. The period of an oscillator remains constant regardless of a change in the amplitude.
- 18. The distance travelled from the time the brake is applied until the vehicle stops.
- 22. The drag force is equal to the weight. The resultant force is zero and there is zero acceleration.
- 23. Matter is distributed uniformly across the universe.
- 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.
- 27. The material will not return to its original shape once a force is removed.
- 30. The universe looks the same in all directions.