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jok3333 [9.3K]
3 years ago
13

Two kilograms of air within a piston-cylinder assembly execute a Carnot power cycle with maximum and minimum temperatures of 750

K and 300 K respectively. The heat transfer to the air during the isothermal expansion os 60 kJ. At the end of the isothermal expansion, the pressure is 600 kPa and the volume is 0.4 m^3. Assuming the ideal gas model for the air determine:
(a) the thermal efficiency
(b) the pressure and the volume at the beginning of the isothermal expansion, in kPa and m^3 respectively
(c) the work and heat transfer for each of the four processes in kJ
(d) sketch the cycle on a p-V coordinates
Engineering
1 answer:
dezoksy [38]3 years ago
4 0

Answer:

because it is not over the world please me 25 kilometre

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harkovskaia [24]

Answer:

The water of the saturated clayed soil is 66.67 %.

Explanation:

Given;

mass of saturated clayed soil, M_s = 600 g

mass of dry soil sample, M_d = 200 g

mass of water content, M_w = M_s - M_d = 600 g - 200 g = 400 g

The water content is determined as;

M_w(\%)  = \frac{M_s - M_d}{M_s} *100\%\\\\M_w(\%)  = \frac{600-200}{600} *100 \% \\\\M_w(\%)  = 66.67 \%

Therefore, the water of the saturated clayed soil is 66.67 %.

6 0
3 years ago
What instrument is used to measure temperature?
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Answer: thermometer

Explanation:

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4 0
2 years ago
The Eads Bridge, which crosses the Mississippi River near St Louis, Missouri, was one of the first all steel bridges built in th
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Answer: At 520 feet between the piers, the center arch of Eads Bridge was the longest rigid span ever built at the time of its construction (only a few suspension bridges had longer spans).

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Consider a plane composite wall that is composed of two materials of thermal conductivities kA = 0.1 W/m*K and kB = 0.04 W/m*K a
nadya68 [22]

Answer:

q=39.15 W/m²

Explanation:

We know that

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R=L/KA

Thermal resistance due to heat transfer coefficient given as

R=1/hA

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R_{th}=\dfrac{0.01}{0.1A}+\dfrac{0.02}{0.04A}+\dfrac{1}{10A}+\dfrac{1}{20A}+\dfrac{1}{0.3A}

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3 years ago
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