(chose all correct answers) the efficiency of a gasoline, internal-combustion engine can be improved by? 1. higher operating temperatures 2. lower operating temperatures 3. higher compression ratios 4. lower compression ratios 5. adding more alcohol as an additive to gasoline

Q: 2. What is the maximum efficiency of an engine that operates between room temperature (20°C) and…

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Q: Answer each item by choosing the correct answer. 1. Which thermodynamic process has variable volume…

A: Thermodynamic process.- Any process which contains any involvement of thermodynamic variables is…

Q: 5. Calculate the change of entropy involved in heating a mole of silver at constant volume from 0°…

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Q: 35) An ideal gas undergoes an isothermal expansion. During this process, its entropy A) remains…

A: During expansion, Volume increases and energy is lost due to the work done, W = -2.303 nRT…

Q: 13. If a 0.06247 kg ice cube initially at 0.00° C is allowed to melt in a Styrofoam cup holding…

A: mass of ice (m) = 0.06247 kg initial temperature of ice = 0oC mass of water (m') = 0.497 kg Initial…

Q: 5. A sample of an ideal gas goes through a full cycle, returning to the same pressure and volume. It…

A: The process is a cyclic process so it will return to the same place where it had started.

Q: 21-30. A 1-lb bar initially at 783K is removed from an oven and quenched by immersing it in a closed…

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Q: 2. Steam at a temperature of 300°C has a specific volume of 0.09765 m³/kg. Determine the pressure,…

A: Given Temperature (T) = 300° C Specific volume (v) = 0.09765  m3/kg Determine the pressure, specific…

Q: 1. Why graph of adiabatic process is more steeper than isothermal process?

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: The entropy of two liquids is increased if they mix. How can immiscibility be explained in terms of…

A: Entropy is a measured physical attribute that is most usually linked with a condition of disorder,…

Q: 5 Assuming there is no heat loss to the environment, You are mixing 35 grams of water at 15 °C with…

A: Solution:-Given thatm1=35 gT1=15°Cm2=68 gT2=75°CCw=4.186 J/g.K

Q: 1- In Isothermal Process: a- (dp-0). b- (dT=0). c- (dv=0)

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Q: Air initially at 100 kPa and 300K is subjected to an isobaric process until it reaches a final…

A: Given: pressure P=100 KPa temperature T1=300K T2 = 620 K

Q: In a specific heat test, 200 g of aluminum C, 0.215- g oc is mixed with 50 cal ? g of water at 20 °C…

A: Given data, Specific heat of the aluminum = 0.215 Cal/gm.oC Mass of aluminum = 200 gm Initial…

Q: am power plant with a power output of 150 MW consumes coal at a rate of 60 tons, value of the coal…

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Q: 6. In which thermodynamic process, with an ideal gas, the entire amount of heat exchanged is spent…

A: (A) in isothermal

Q: 15-A heat engine with a diatomic gas as the working substance uses the closed cycle shown in below…

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Q: 9. A neatly arranged bookshelf is very orderly system and has low entropy why is it safe to assume…

A: Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing…

Q: 4. An automobile engine consumes fuel at a rate of 22 L/h and delivers 55 kW of power to the wheels.…

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Q: 8. In a bypass engine, the bypass air: Increases the air mass flow and therefore reduces the…

A: We have to write about bypass engine

Q: 8. Air is compressed by a 15 - kW compressor from P, to P2. The air temperature is maintained…

A: solution- assumptions- 1. This is a steady flow process. 2. Air is an ideal gas. 3. Potential energy…

Q: 5. Gas within a chamber passes through the process shown in the p-V diagram below. Calculate the net…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Which of the following processes does not involve a change in entropy?A. An electric heater raises…

A: Entropy change is the measure of change in thermal energy per unit temperature of the system.

Q: 1. A heat engine with an efficiency of 35% does 600 J of work in each cycle. How much heat must be…

A: Given values: Efficiency of heat engine in percentage, η=35 % Work, W=600 J

Q: 20. What is the change in entropy of a 3.0 kg ice at 0.0°C after melting is completed? * O A. 12.5…

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Q: A Carnot engine, whose sink is at 300 K, has an efficiency of 40%. By how much should the…

A: D

Q: Determine the theoritical limiting efficiency of a steam engine when enters at 400°C and leaves the…

A: Given data: The temperature of stream enters into the engine is T1=400oC. The temperature of stream…

Q: 2. The picture in Figure 1b shows a schematic pV-graph for a Stirling engine. Redraw the graph and…

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Q: 1. A certain gasoline engine has an efficiency of 31%. What would the hot reservoir temperature be…

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Q: Advanced Physics explain the relevance of cyclical PV diagrams to heat engines. please be detailed

A: Heat engine Heat engine is a device which converts thermal energy into mechanical energy. In PV…

Q: A 4.50-kg block of ice at 0.00℃ falls into the ocean and melts. The average temperature of the ocean…

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Q: Isotherms 5

A: Given Here graph between Pressure-volume  is given in which different different processes are…

Q: c heat impute (q), e internal energy c

A: Given as,

Q: 2.) One mole of a diatomic gas goes through a cycle in four steps: as shown in the V-T diagram. a)…

A: From step 1→2, process is isothermal because tempreture is constant.step 2→3, process is isochoric…

Q: Study Guide Mix n Match: Heat is Energy moving from low temperature to high temperature.…

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