Across
- 2. The periodic variation in the surface level of the oceans and of bays, gulfs, inlets, and estuaries, caused by gravitational attraction of the moon and sun.
- 4. A magnet consisting essentially of a coil of insulated wire wrapped around a steel or iron core that is magnetized only when current flows through the wire.
- 6. the field produced by the gravitational force of mass
- 8. a device that creates motion.
- 12. a substance that resists electric current
- 13. power that an object gets from its position and motion.
- 19. a very long-range, but relatively weak fundamental force of attraction that acts between all particles that have mass; believed to be mediated by gravitons
- 21. the time rate of flow of electric charge, in the direction that a positive moving charge would take and having magnitude equal to the quantity of charge per unit time
- 22. property of a conductor due to which it opposes the flow of current through it.
- 25. another name for charge
Down
- 1. how heavy something is or how much mass it has.
- 3. the production of a potential difference (voltage) across a conductor when it is exposed to a varying magnetic field.
- 5. the region of space surrounding a body, such as a charged particle or a magnet, within which it can exert a force on another similar body not in contact with it
- 7. amount of matter
- 9. The capacity of a physical system to do work.
- 10. electromotive force or potential difference expressed in volts.
- 11. a change in velocity.
- 14. the force, acting upon a body moving along a curved path, that is directed toward the center of curvature of the path and constrains the body to the path.
- 15. the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system.
- 16. an object allowing the flow of electric charge
- 17. The force exerted between magnets.
- 18. the energy of a body or system with respect to the motion of the body or particles in the system
- 20. One that generates, especially a machine that converts mechanical energy into electrical energy.
- 23. all competing influences are balanced
- 24. The rate or a measure of the rate of motion