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23 Cards in this Set
- Front
- Back
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In what year was the metre rule redefined? |
In the year 1960 |
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What was metre rule original definition |
Defined as the distance at 0 degree Celsius between two lines on a platinum-iridium bar kept at the international office of weights and measures at sevres near Paris. |
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The distance occupied? |
1650 763 73 wavelengths of a specified orange-red light from the gas krypton-86 |
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1 metre equals x cm |
100cm |
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1 metre equals *micrometres |
10^6 micrometres |
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1 metre equals *nm |
10^9nm |
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1 metre equals *milimetres |
1000 mm |
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1 cm equals |
10 mm |
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1 km equals |
1000 m |
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What's the smallest graduation of a metre rule. |
0.1cm and 1mm |
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The external and internal calipers are used to measure what? |
To measure distances on solid objects |
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Vernier calipers measures? |
The give a more accurate determination of length than the metre rule... The are used to measure thickness of a small body |
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Range of measurement for vernier calipers? |
Range of 10mm to 120mm |
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Draw and label a vernier caliper |
Vernier calipers drawing... |
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What is zero error |
It is an error in which an instrument gives a reading when the true reading at that time is zero |
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Micrometer screw gauge reading accuracy |
0.01mm and 0.001cm |
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Vernier caliper reading accuracy |
0.1mm and 0.01cm |
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Travelling micoscope |
Is a useful instrument which may be used to measure height, thickness and radius to tenths or hundredth of a mm...it is useful in situations where screw gauges and vernier calipers cannot be employed in the measurement |
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Volume of a cylinder |
πr^2 * l Pi r squared times length |
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Volume of a cylinder |
4/3πr^3 4/3 pi r cubed |
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Volume of a cone |
1/3 * area of base *height |
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Difference between water and Mercury's meniscus |
Concave meniscus for water and convex for the later |
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Volume of a sphere |
4/3πr^3 4/3 pi r cubed |
