Molecular Physics | Thermodynamics Answers

Oil flows through a pipeline which contracts from 450mm diameter at A to 300mm diameter at B and then forks, one branch being 150mm diameter discharging at C and the other branch 225mm diameter discharging at D. if the velocity at A is 1.8 m/s and the velocity at D is 3.6 m/s, what will be the discharges at C & D and the velocity at B & C

The atmosphere of Venus is 96.5% CO2 and 3.5% N2 by weight. The pressure at the surface is 92 bar (1 bar = 101,325 Pa). The density of Venus’ atmosphere is 65 Kg/m3 at the surface. The gas constant for CO2 is 188.92 J/kg-K and for N2 is 296.80 J/kg-K. Assume all of these values have relative uncertainties of +/- 1%. The ideal gas law can be written asP (Pa) /ρ (kg/m3) = R (J/kg-K) T (K)Give all your answers in terms of X +/- Y where X is the expected value and Y is the absolute uncertainty of X.a. What is the average gas constant for Venus’ atmosphere?b. What is the predicted surface temperature of Venus by the ideal gas law?c. Research the actual measured surface temperature of Venus. How well does the ideal gas law predict the surface temperature of Venus?

A charge is placed in a uniform electric field of 9.8 newtons per coulomb. Calculate the magnitude of the electric force felt by the 9.7 -coulomb charge.

You are on a merry go round with radius 6.1 m. What is the centripetal force on you if your velocity is 2.7 m/s and you weigh 7.5 kilograms?

0.5 kg aluminium block is heated to 1000C and quickly placed into a beaker which contains water at 400C. If the final temperature of the system is 440C and specific heat of aluminium is 900 J/kg0C, calculate the mass of water

0.2 kg coffee at 900C is placed on beaker (specific heat of beaker is 700 J/kg0C) at 200C. the final temperature of the system is 760C. Calculate the mass of the beaker

Explain the concept and importance of a thermodynamic cycle.

An Otto cycle operates on 1lb/s of air from 15 psia and 130 F at the beginning of

compression. The temperature at the end of combustion is 5,000 R; compression ratio is 5.5. for

hot-air standard k=1.32. find (a) T4, OR; (b)P4, psia; (c) Qr, BTU/s; (d) thermal efficiency, and (e)

work net in horsepower.

A Carnot engine operating between 527C and 27 C produces 600KW of work. Determine,

(a) Qa, KW; (b) Qr, KW; (c) ΔS during heat rejection, KW/K and (d) thermal efficiency of the cycle.

The resistance of a resistance thermometer at the ice point is 40 Ω. Its resistance at temperatures T1 and T2 are 48 Ω and 53.2 Ω respectively. What is the ratio of T2 and T1?