Numerical Problems II — task. Science State Board, Class 10.

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Calculate the coefficient of cubical expansion of a zinc bar. Whose volume is increased 0.25

m^{3}

from 0.35

m^{3}

due to the change in its temperature of 50 \(K\).

From the data,

Volume of a zinc rod before expansion (

V_{1}

) \(=\) 0.25

m^{3}

Change of volume (

Δ V

) \(=\) 0.35

m^{3}

Change in temperature (

Δ T

) \(=\) 50 \(K\)

The formula to calculate the change in volume,

Δ i = γ \times i_{i} \times (i_{i} - i_{i})

Substitute the known values,

Coefficient of cubical expansion of zinc rod \(=\)

K^{- 1}

(Note: Enter your answer with three decimal digits)

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13. Numerical Problems II