Marcus Guerra

Section 5

Differences

The experiment run in class was identical to the procedure outlined in the lab manual.

Data

Diameter | Microm. | Caliper | Length | Yard Stick | Mass | Triple B |

1 | 6.36mm | 6mm | 1 | 60cm | 1 | 168.3g |

2 | 6.36mm | 6mm | 2 | 60cm | 2 | 168.35g |

3 | 6.39mm | 6mm | 3 | 60cm | 3 | 168.4g |

4 | 6.3mm | 6mm | 4 | 60cm | 4 | 168.3g |

5 | 6.34mm | 6mm | 5 | 60cm | 5 | 168.2g |

6 | 6.36mm | 6mm | 6 | 60cm | 6 | 168.3g |

7 | 6.3mm | 6mm | 7 | 60cm | 7 | 168.4g |

8 | 6.3mm | 6mm | 8 | 60cm | 8 | 168.35g |

9 | 6.3mm | 6mm | 9 | 60cm | 9 | 168.2g |

10 | 6.31mm | 6mm | 10 | 60cm | 10 | 168.35g |

Calculations

Discussion

The purpose of this experiment was to measure the copper rod and find the error in the measurements. The standard deviation from length, diameter, and mass were 0, .0819, and .041 respectively. The measurement for length was probably the least precise measurement taken. We used a meter stick, but kept getting the same measurement, probably due to the meter stick not being very precise.

Lab questions

1-4

| Average | Std Dev |

Length | 60cm | 0 |

Diameter | 6.332 cm | 0.0819 |

Mass | 168.315 | 0.041 |

| | |

Density | .089 kg/m3 | |

5. The uncertainty when calculating density could come from any value. The length of the rod was measured in cm with a meter stick. We could have used a much more precise instrument to measure the length because we got the same value of 60 cm each time. The micrometer used for measuring the diameter was pretty accurate, but we got slightly different results for each measurement. This could have been due to measuring different areas on the rod. The mass was also pretty accurate, and like the diameter, we received slightly different measurements.

The value that most...