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# Wave, Work, Power

### Sagar's Spectacular Wave, Work, Power Study Stack

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

What is the definition of wave? (Vocab) | A disturbance that transfers energy |

What is definition of medium? (Vocab) | A material (solid, liquid, or gas) in which a wave travels through |

What is the definition of transverse wave? (Vocab) | Particles move perpendicular to the direction the wave travels |

What is the definition of crest? (Vocab) | Points where the wave is at the highest. (Transverse wave) |

What is the definition of trough? (Vocab) | Points where the wave is the lowest. (Transverse wave) |

What is the definition of longitudinal wave? (Vocab) | Particles move in a parallel direction that the wave travels in. |

What is the definition of compression? (Vocab) | The part in a longitudinal wave where it is scrunched up or more compact. |

What is the definition of rarefaction? (Vocab) | The part in a longitudinal wave where it is the most spread out. |

What is the definition of mechanical waves? (Vocab) | Waves that require a medium. |

What is the definition of electromagnetic wave? (Vocab) | Waves that aren't disturbances in a physical medium |

What is the definition of amplitude? (Vocab) | Measure of how far particles in the medium move from their rest position |

What is the definition of wavelength? (Vocab) | Distance from any point on a wave to the identical point on the same wave. |

What is the definition of frequency? (Vocab) | The number of waves that pass a point in a given amount of time |

What is the definition of Hertz? (Vocab) | What the measurement of frequency is |

What is the definition of wave speed? (Vocab) | The speed at which waves travel |

What is the definition of force and the unit of measure? (Vocab) | A push or pull exerted on an object in order to change the emotion of the object. Measured in Newtons |

What is the definition of work and what is the equation and unit of measure? (Vocab) | The use of force to move an object. Measured in Joules and the equation is work=force x distance. |

What is the definition of power? (Vocab) | The rate at which work was done. |

Ping is 60N and is climbing a flight of stairs in 10 second. The stairs are 12 meters hight. How much power did Ping use? | Work=Force x Distance Power= Work/ Time Work=60 x 12 Power= 720/10 Work= 720 Joules FINAL ANSWER: 72 watts |

If a model airplane exerts 0.25 Newtons over a distance of 10 meters, who much work was used? | Work= Force x Distance Work= 0.25 x 10 FINAL ANSWER: 2.5 joules |

If the crest of an ocean wave moves a distance of 180 meters in 3 seconds, what was the wave speed? | Speed= Distance/ Time Speed= 180/3 Speed 60 m/s |

If the crest of a transverse wave is 15 cm, how low is the trough? | Since the distance from the resting point to the crest is the same distance form the resting point to the trough, the trough would also be 15 cm |

If you know the distance the force and the time, what do you need to find before you can calculate the power? | You need to find the work |

If you put an mp3 player in a bottle that's shut tight, would you be able to hear it? | No you wouldn't because there is no medium for the sound to travel through. |

If there is a huge bucket in front of you and you yell through it too someone else on the other side, will you hear it faster if the bucket is empty or filled with water? | Since the particles in the water are much more compacted, they can quickly transmit the energy meaning you could hear someone faster with water in the bucket rather than nothing in the bucket. |

How many hertz is equal to one wavelength per second? | Only one hertz is equal to one wavelength. |