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Asked: June 26, 20202020-06-26T15:38:26+05:30 2020-06-26T15:38:26+05:30In: Thermodynamics & Rate Processes

GATE MT 2018 Q46

The terminal velocity (𝑣) of a spherical inclusion of diameter D = 50 micrometers rising in liquid steel is_______ (in mm s-1 to two decimal places).

Assume Stokes law; i.e., drag force 𝐹𝑑 = 3πœ‹πœ‡π·π‘£, where πœ‡ is the viscosity of steel. Given: Density of liquid steel = 7900 kg m-3; Viscosity of liquid steel = 0.0079 Pa s; Density of the inclusion = 2500 kg m-3; Acceleration due to gravity = 9.8 m s-2.

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      digbijaya igit Platinum GATE 2021 QUALIFIED
      2020-06-26T16:51:25+05:30Added an answer on June 26, 2020 at 4:51 pm

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      • Askmemetallurgy Official official account of Askmemetallurgy
        2020-06-27T16:23:53+05:30Replied to answer on June 27, 2020 at 4:23 pm

        Correct answer is 0.93 @Digbijaya igit described it best. Thank you.

        Correct answer is 0.93 digbijaya igit igit described it best. Thank you.

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