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# Physics Final Sem II

### Conceptual Physics

Question | Answer |
---|---|

Entropy | A measure of the amount of Energy in a physical system not available to do work. |

First Law of Thermodynamics | Heat is a form of Energy, and the total amount of Energy of all materials in an isolated system is constant. |

Second Law of Thermodynamics | Increased Entropy |

Mechanical Wave | A Disturbance that Moves through a Medium. |

Momentum (P) | p=mv |

Kilogram per meter cubed (kg/m^3) | Density |

Pascal (Pa) | Pressure |

Volt (V) | Electric Potential |

Ampere (A) | Electric Current |

Ohm (Ω) | Electric Resistance |

Watt (W) | Power |

Joule(J) | Work |

Meter per second squared (m/s^2) | acceleration |

Meters per second (m/s) | Speed |

Meter (m) | Distance |

Hertz (Hz) | Frequency |

Newton (N) | Force |

Kilogram (kg) | Mass |

The ___ catastrophe was resolved with the Quantum idea. | Ultraviolet |

The ___ frequency is the minimum photon frequency needed to eject a photoelectron. | Threshold |

Won the Noble Prize for his work with the Quantum Idea. | Planck |

Won the Noble Prize for his work on the Photoelectric Effect. | Einstein |

James ___ proposed the electromagnetic wave model of light and unified the electric and magnetic forces. | Maxwell |

A perfect Emitter or Radiator. | Blackbody |

The double slit experiment demonstrated the existence of light ___. | Interference |

Arthur Compton showed that light has ___ using a x-rays and a cloud chamber. | Momentum |

The particle model works best for ___ frequency EM radiation like x-rays. | High |

Proposed the particle model of light. | Newton |

Proposed the wave model of light. | Huygens |

___ mechanics describes that all of the fundamental forces except gravity. | Quantum |

Einstein called a light particle a ___. | Photon |

The wave model works best for ___ frequency EM radiation like radio waves. | Low |

Heat Engine | A device that converts Heat Energy into Work. |

A change in phase is when a material changes from one ___ to another. | State |

When heat is added to an object will either have an increase in temperature or a change in ___. | State/Phase |

Archimedes Principle | Law of Buoyancy, Which states that any object that is completely or partially submerged in a fluid at rest is acted on by an upward, or buoyant, force. |

Two models of light | Particle Model and Wave Model |

Cause of Centripetal Acceleration | Net force of gravity minus N. |