Mass and volume of an object is dependent on its temperature in kelvin as m = 5t^2 kg and v = (400 + 600t) m^3 respectively, then what is the density of the object at t = 27^oC?(a) 5 kg/m^3(b) 10 kg/m^3(c) 15 kg/m^3(d) 20 kg/m^3This question was posed to me in a job interview.This question is from Temperature topic in section Temperature and Pressure of Basic Chemical Engineering

Mass and volume of an object is dependent on its temperature in kelvin

1.	Mass and volume of an object is dependent on its temperature in kelvin as m = 5t^2 kg and v = (400 + 600t) m^3 respectively, then what is the density of the object at t = 27^oC?(a) 5 kg/m^3(b) 10 kg/m^3(c) 15 kg/m^3(d) 20 kg/m^3This question was posed to me in a job interview.This question is from Temperature topic in section Temperature and Pressure of Basic Chemical Engineering
Answer» Correct CHOICE is (a) 5 kg/m^3 The best EXPLANATION: Density of object = dm/dv = (dm/dt)/(dv/dt) = 10t/600 = t/60, => density of object at t = 27^oC = 300 K is D = 300/60 = 5 kg/m^3.

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