- 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 \ma...
- 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. E...
- 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 \...
- 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 ...
- 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 \(180 \mathrm{lbf}\) is pushing a cart that weighs ...
- 2.29P: ?The force \(F\) required to compress a spring a distance \(x\) is ...
- 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 \(1150-\mathrm{kg}\) car to cli...
- 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 bein...
- 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. 2–59E. Using \(\mathrm{EES}\) (or other) software...
- 2.61P: ?A geothermal pump is used to pump brine whose density is \(1050 \m...
- 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. 2–66. Using EES (or other) software, investigate ...
- 2.68P: ?Water is pumped from a lake to a storage tank \(15\ m\) above at a...
- 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 ...
- 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 ...
- 2.73P: ?The water behind Hoover Dam in Nevada is \(206\ m\) higher than th...
- 2.74P: ?An oil pump is drawing \(44 \mathrm{~kW}\) of electric power while...
- 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 gallon...
- 2.81P: ?Consider a household that uses \(14,000 \mathrm{kWh}\) of electric...
- 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 \(\mathrm{km}\) a year emits to the at...
- 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-\mathrm{m} \times 6-\mathrm{...
- 2.92P: The inner and outer surfaces of a 0.5-cm-thick 2-m × 2-m window gla...
- 2.93P: ?Reconsider Prob. 2–92. Using EES (or other) software, investigate ...
- 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. 2-99. Using EES (or other) software, investigate ...
- 2.101P: ?A 1000-W iron is left on the ironing board with its base exposed t...
- 2.102P: ?A 7-cm-external-diameter, 18-m-long hot-water pipe at \(80^{\circ}...
- 2.103P: ?A thin metal plate is insulated on the back and exposed to solar r...
- 2.104P: ?Reconsider Prob. 2-103. 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. 2–105. 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 efficienci...
- 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 oi...
- 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 ...
- 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: ?The demand for electric power is usually much higher during the da...
- 2.123P: ?In a hydroelectric power plant, \(65 \mathrm{~m}^{3} / \mathrm{s}\...
- 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 \mathrm{~W} / \mat...

# Solutions for Chapter 2: Energy, Energy Transfer, and General Energy Analysis

## Full solutions for Thermodynamics: An Engineering Approach | 8th Edition

ISBN: 9780073398174

Solutions for Chapter 2: Energy, Energy Transfer, and General Energy Analysis

Get Full SolutionsSummary of Chapter 2: Energy, Energy Transfer, and General Energy Analysis

We start this chapter with a discussion of various forms of energy and energy transfer by heat. We then introduce various forms of work and discuss energy transfer by work. We continue with developing a general intuitive expression for the first law of thermodynamics, also known as the conservation of energy principle, which is one of the most fundamental principles in nature, and we then demonstrate its use.

Chapter 2: Energy, Energy Transfer, and General Energy Analysis includes 142 full step-by-step solutions. Thermodynamics: An Engineering Approach was written by and is associated to the ISBN: 9780073398174. This textbook survival guide was created for the textbook: Thermodynamics: An Engineering Approach , edition: 8. Since 142 problems in chapter 2: Energy, Energy Transfer, and General Energy Analysis have been answered, more than 442061 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions.