- 2.79E: What is smog? What does it consist of? How does ground-level ozone ...
- 2.107: A hollow spherical iron container whose outer diameter is 40 cm and...
- 2.1P: What is total energy? Identify the different forms of energy that c...
- 2.2P: List the forms of energy that contribute to the internal energy of ...
- 2.3P: How are heat, internal energy, and thermal energy related to each o...
- 2.4P: What is mechanical energy? How does it differ from thermal energy? ...
- 2.5P: Natural gas, which is mostly methane CH4, is a fuel and a major ene...
- 2.6P: Portable electric heaters are commonly used to heat small rooms. Ex...
- 2.7P: Consider the process of heating water on top of an electric range. ...
- 2.8P: Calculate the total kinetic energy, in Btu, of an object with a mas...
- 2.9P: Calculate the total potential energy, in Btu, of an object with a m...
- 2.10P: A person gets into an elevator at the lobby level of a hotel togeth...
- 2.11P: Electric power is to be generated by installing a hydraulic turbine...
- 2.12P: At a certain location, wind is blowing steadily at 10 m/s. Determin...
- 2.13P: Electric power is to be generated in a hydroelectric power plant th...
- 2.14P: Two sites are being considered for wind power generation. In the fi...
- 2.15P: A river flowing steadily at a rate of 175 m3/s is considered for hy...
- 2.16P: Consider a river flowing toward a lake at an average velocity of 3 ...
- 2.17P: When is the energy crossing the boundaries of a closed system heat ...
- 2.18P: Consider an automobile traveling at a constant speed along a road. ...
- 2.19P: Consider an electric refrigerator located in a room. Determine the ...
- 2.20P: A gas in a piston-cylinder device is compressed, and as a result it...
- 2.21P: A room is heated by an iron that is left plugged in. Is this a heat...
- 2.22P: A room is heated as a result of solar radiation coming in through t...
- 2.23P: An insulated room is heated by burning candles. Is this a heat or w...
- 2.24P: A small electrical motor produces 5 W of mechanical power. What is ...
- 2.25P: A model aircraft internal-combustion engine produces 10 W of power....
- 2.26P: Lifting a weight to a height of 20 m takes 20 s for one crane and 1...
- 2.27P: A construction crane lifts a prestressed concrete beam weighing 3 s...
- 2.28P: A man weighing 180 lbf is pushing a cart that weights 100 lbf with ...
- 2.29P: The force F required to compress a spring a distance x is given by ...
- 2.30P: Determine the energy required to accelerate a 1300-kg car from 10 t...
- 2.31P: Determine the torque applied to the shaft of a car that transmits 4...
- 2.32P: A spherical soap bubble with a surface-tension of 0.005 lbf/ft is e...
- 2.33P: Determine the work required to deflect a linear spring with a sprin...
- 2.34P: A ski lift has a one-way length of 1 km and a vertical rise of 200 ...
- 2.35P: The engine of a 1500-kg automobile has a power rating of 75 kW. Det...
- 2.36P: Determine the power required for a 1150-kg car to climb a 100-m-lon...
- 2.37P: What are the different mechanisms for transferring energy to or fro...
- 2.38P: On a hot summer day, a student turns his fan on when he leaves his ...
- 2.39P: Water is being heated in a closed pan on top of a range while being...
- 2.40P: A vertical piston-cylinder device contains water and is being heate...
- 2.41P: At winter design conditions, a house is projected to lose heat at a...
- 2.42P: A water pump increases the water pressure from 15 psia to 70 psia. ...
- 2.43P: A water pump that consumes 2 kW of electric power when operating is...
- 2.44P: A classroom that normally contains 40 people is to be air-condition...
- 2.45P: A university campus has 200 classrooms and 400 faculty offices. The...
- 2.46P: The lighting requirements of an industrial facility are being met b...
- 2.47P: Consider a room that is initially at the outdoor temperature of 208...
- 2.48P: Consider a fan located in a 3 ft × 3 ft square duct. Velocities at ...
- 2.49P: The 60-W fan of a central heating system is to circulate air throug...
- 2.50P: The driving force for fluid flow is the pressure difference, and a ...
- 2.51P: An escalator in a shopping center is designed to move 50 people, 75...
- 2.52P: Consider a 1400-kg car cruising at constant speed of 70 km/s. Now t...
- 2.53P: How is the combined pump-motor efficiency of a pump and motor syste...
- 2.54P: Define turbine efficiency, generator efficiency, and combined turbi...
- 2.55P: Can the combined turbine-generator efficiency be greater than eithe...
- 2.56P: Consider a 24-kW hooded electric open burner in an area where the u...
- 2.57P: A 75-hp (shaft output) motor that has an efficiency of 91.0 percent...
- 2.58P: Consider an electric motor with a shaft power output of 20 kW and a...
- 2.59P: The steam requirements of a manufacturing facility are being met by...
- 2.60P: Reconsider Prob. 2-64E. Using EES (or other) software, study the ef...
- 2.61P: A geothermal pump is used to pump brine whose density is from a dep...
- 2.62P: An exercise room has 6 weight-lifting machines that have no motors ...
- 2.63P: A room is cooled by circulating chilled water through a heat exchan...
- 2.64P: The water in a large lake is to be used to generate electricity by ...
- 2.65P: A 7-hp (shaft) pump is used to raise water to an elevation of 15 m....
- 2.66P: At a certain location, wind is blowing steadily at 7 m/s. Determine...
- 2.67P: Reconsider Prob. 2–69. Using EES (or other) software, investigate t...
- 2.68P: Water is pumped from a lake to a storage tank 15 m above at a rate ...
- 2.69P: Large wind turbines with blade span diameters of over 100 m are ava...
- 2.70P: A hydraulic turbine has 85 m of elevation difference available at a...
- 2.71P: A water pump delivers 6 hp of shaft power when operating. If the pr...
- 2.72P: Water is pumped from a lower reservoir to a higher reservoir by a p...
- 2.73P: The water behind Hoover Dam in Nevada is 206 m higher than the Colo...
- 2.74P: An oil pump is drawing 44 kW of electric power while pumping oil wi...
- 2.75P: How does energy conversion affect the environment? What are the pri...
- 2.76P: What is acid rain? Why is it called a “rain”? How do the acids form...
- 2.77P: Why is carbon monoxide a dangerous air pollutant? How does it affec...
- 2.78P: What is the greenhouse effect? How does the excess CO2 gas in the a...
- 2.79P: What is smog? What does it consist of? How does ground-level ozone ...
- 2.80P: A Ford Taurus driven 12,000 miles a year will use about 650 gallons...
- 2.81P: Consider a household that uses 14,000 kWh of electricity per year a...
- 2.82P: When a hydrocarbon fuel is burned, almost all of the carbon in the ...
- 2.83P: Repeat Prob. 2–85 assuming the electricity is produced by a power p...
- 2.84P: A typical car driven 20,000 km a year emits to the atmosphere about...
- 2.85P: What are the mechanisms of heat transfer?
- 2.86P: Which is a better heat conductor, diamond or silver?
- 2.87P: How does forced convection differ from natural convection?
- 2.88P: What is blackbody? How do real bodies differ from a blackbody?
- 2.89P: Define emissivity and absorptivity. What is Kirchhoff's law of radi...
- 2.90P: Does any of the energy of the sun reach the earth by conduction or ...
- 2.91P: The inner and outer surfaces of a 5-m × 6-m brick wall of thickness...
- 2.92P: The inner and outer surfaces of a 0.5-cm-thick 2-m × 2-m window gla...
- 2.93P: Reconsider Prob. 2–96. Using EES (or other) software,investigate th...
- 2.94P: An aluminum pan whose thermal conductivity is 237 W/m·°C has a flat...
- 2.95P: The inner and outer glasses of a 2-m×2-m double pane window are at ...
- 2.96P: Two surfaces of a 2-cm-thick plate are maintained at 0°C and 100°C,...
- 2.97P: Hot air at 80°C is blown over a 2-m × 4-m flat surface at 30°C. If ...
- 2.98P: For heat transfer purposes, a standing man can be modeled as a 30-c...
- 2.99P: A 9-cm-diameter spherical ball whose surface is maintained at a tem...
- 2.100P: Reconsider Prob. 2–102. Using EES (or other) software, investigate ...
- 2.101P: A 1000-W iron is left on the ironing board with its base exposed to...
- 2.102P: A 7-cm-external-diameter, 18-m-long hot-water pipe at 80°C is losin...
- 2.103P: A thin metal plate is insulated on the back and exposed to solar ra...
- 2.104P: Reconsider Prob. 2–106. Using EES (or other) software, investigate ...
- 2.105P: The outer surface of a spacecraft in space has an emissivity of 0.6...
- 2.106P: Reconsider Prob. 2–109. Using EES (or other) software, investigate ...
- 2.107P: A hollow spherical iron container whose outer diameter is 40 cm and...
- 2.108P: Consider a vertical elevator whose cabin has a total mass of 800 kg...
- 2.109P: Consider a homeowner who .is replacing his 25-year-old.natural gas ...
- 2.110P: The energy contents, unit costs, and typical conversion efficiencie...
- 2.111P: A homeowner is considering these heating systems for heating his ho...
- 2.112P: The U.S. Department of Energy estimates that 570,000 barrels of oil...
- 2.113P: The U.S. Department of Energy estimates that up to 10 percent of th...
- 2.114P: The force required to compress the gas in a gas spring a distance x...
- 2.115P: A man weighing 180 lbf pushes a block weighing 100 lbf along a hori...
- 2.116P: A diesel engine with an engine volume of 4.0 L and an engine speed ...
- 2.117P: Leaded gasoline contains lead that ends up in the engine exhaust. L...
- 2.118P: Consider a TV set that consumes 120 W of electric power when it is ...
- 2.119P: Water is pumped from a 200-ft-deep well into a 100-ft-high storage ...
- 2.120P: A grist mill of the 1800s employed a water wheel that was 14 m high...
- 2.121P: Windmills slow the air and cause it to fill a larger channel as it ...
- 2.122P: In a hydroelectric power plant, 65 m3/s of water flows from an elev...
- 2.123P: The demand for electric power is usually much higher during the day...
- 2.124P: The pump of a water distribution system is powered by a 15-kW elect...
- 2.125P: On a hot summer day, the air in a well-sealed room is circulated by...
- 2.126P: A fan is to accelerate quiescent air to a velocity to 12 m/s at a r...
- 2.127P: A 2-kW electric resistance heater in a room is turned on and kept o...
- 2.128P: A 900-kg car cruising at a constant speed of 60 km/s is to accelera...
- 2.129P: The elevator of a large building is to raise a net mass of 400 kg a...
- 2.130P: Electric power is to be generated in a hydroelectric power plant th...
- 2.131P: Consider a refrigerator that consumes 320 W of electric power when ...
- 2.132P: A 2-kW pump is used to pump kerosene (? = 0.820 kg/L) from a tank o...
- 2.133P: A glycerin pump is powered by a 5-kW electric motor. The pressure d...
- 2.134P: A 75-hp compressor in a facility that operates at full load for 250...
- 2.135P: A 10-cm high and 20-cm wide circuit board houses on its surface 100...
- 2.136P: A 50-cm-long, 0.2-cm-diameter electric resistance wire submerged in...
- 2.137P: A 3-m2 hot black surface at 80°C is losing heat to the surrounding ...
- 2.138P: Heat is transferred steadily through a 0.2-m thick 8 m × 4 m wall a...
- 2.139P: The roof of an electrically heated house is 7-m long, 10-m wide, an...
- 2.143P: Solar energy reaching the earth is about 1350 W/m2 outside the eart...

# Solutions for Chapter 2: Thermodynamics: An Engineering Approach 8th Edition

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ISBN: 9780073398174

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