Physics Review!

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Across
  1. 3. The number of digits important to determine the accuracy and precision of measurement (two words)
  2. 7. The unit of electric potential
  3. 8. Type of energy when the object is already in motion
  4. 9. Discovered the theory of universal gravitation, had an apple fall on his head
  5. 11. A device that detects an electric charge does not detect positive or negative only and unequal charge
  6. 13. A type of an element with the same amount of protons, but different amounts of neutrons
  7. 14. Any motion where gravity is the only force acting
  8. 15. Which right hand rule finds the direction of the magnetic force on a positive moving charge _____?
  9. 17. Contact Force that opposes the direction of motion
  10. 19. A particle that consists of a nucleus of protons and neutrons
  11. 20. State in which opposing forces are balanced
  12. 22. Every atom has its own electric _____
  13. 23. K is what in F=½kx2. (two words)
  14. 24. The effect that proves that light is a particle
  15. 26. When a beam of lights waves spreads out as a result of passing through a narrow aperture
  16. 29. Measures the opposition of current flow
  17. 32. F=kx (hint: it's a law,two words)
  18. 34. Type of acceleration in circular motion
Down
  1. 1. Change in direction of a wavefront at an interface between two media
  2. 2. Inverse of the period (T)
  3. 4. Relationship between mass and velocity, in terms of momentum
  4. 5. The force between two point charges, that’s inversely proportional to the square of their distance apart (hint:its a law,two words)
  5. 6. If an object's velocity is increasing at a constant rate it is in _____. (two words)
  6. 10. Change in direction of waves passing through one medium to another
  7. 12. Momentum is always _______
  8. 16. Variable J represents?
  9. 18. Type of light that can be seen with human eyes
  10. 21. Object or type of matter that allows the flow of charge in one or more directions
  11. 25. Type of wave that move parallel to the direction motion
  12. 27. Multiple waves interacting with each other causing either constructive or destructive _________
  13. 28. Every action has an equal and opposite ______
  14. 30. The voltage is the same in this type of circuit
  15. 31. The gravitational force acting on the object
  16. 33. V=IR (hint: it's a law,two words)