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vfiekz [6]
3 years ago
12

What is a gram used to measure

Physics
1 answer:
11Alexandr11 [23.1K]3 years ago
4 0

Answer:

The gram is the basic unit of measurement

Explanation:

You use it to weigh small items such as sugar, flour, coffee, and other items that are similar.

If you want to measure in grams using a scale is the most accurate solution.

(have a nice day!)

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The temperature coefficient of a certain conducting material is 5.74 × 10-3 (°C)-1. (a) At what temperature would the resistance
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Answer:

Temperature at which the resistance is twice the resistance at 20^{\circ}C is 194.216^{\circ}C

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As per the question:

Temperature coefficient, \alpha = 5.74\times 10^{- 3}^{\circ}C

Reference temperature, T_{o} = 20^{\circ}C

Resistance, R_{t} = 2R_{o}

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R_{t} = R_{o}(1 + \alpha \Delta T)

2R_{o} = R_{o}(1 + \alpha \times (T _ T_{o}))

2 = 1 + 5.74\times 10^{- 3}\times (T - 20^{\circ})

\frac{1}{5.74\times 10^{- 3}} = T - 20^{\circ}

T = 174.216 + 20 = 194.216^{\circ}

  • Yes, this temperature holds for all all the conductors of copper, irrespective of the size and shape of the conductor.

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