Thermody 232, exam Copyright ©Wayne Hacker 2011. All rights reserved. 3 em 6 (Di

Question

Thermody 232, exam Copyright ©Wayne Hacker 2011. All rights reserved. 3 em 6 (Dimensional consistency). Determine whether equations (0) and (l) below are nensionally consistent. (i) Wm P(v) dv where W is work, P is power, P is pressure, ¥ls volume, v is specific volume, and m is mass. (a) (1) is dimensionally consistent; (ii) is dimensionally inconsistent (b) (i) is dimensionally inconsistent; (i) is dimensionally consistent (e) (0) and (i) are both dimensionally consistent (d) (i) and (it) are both dimensionally inconsistent Problem 7 (Dimensional consistency). Determine whether equations (0) and (i) below are dimensionally consistent. (i) z=v1 + at (ii) w_PK where W-work, P = pressure, ¥ = volume, z = distance, V-distance, t= velocity, t- time, and a acceleration. consistent; (i) is dimensionally inconsistent (b) (G) is dimensionally inconsistent; (iü) is dimensionally consistent (c) (G) and (ii) are both dimensionally consistent (d) (6) and (i) are both dimensionally inconsistent Density, specific volume, specific weight Problem 8 (Density, specific volume, specific weight). The mass of an unknown gas mixture in a room that is 2 m × 3 m × 4 m is known to be 48 kg, what h the specific volume of the gas? 1 kg 1 m (d) 2 kg (e) None of these

Explanation / Answer

8) specific volume = Volume / mass

= lbh / m

= 2*3*4 / 48

= 0.5 m^3 / kg

so option B) is the correct answer

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