Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
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Textbook Question
Chapter 24, Problem 51P
The Nissan Leaf is an all-electric car powered by a 107-hp electric motor and a lithium-ion battery that stores 24 kWh and produces 394 V at its terminals when fully charged. The Leaf’s battery can charge at the rate of 3.3 kW from a standard 120-V power outlet, at 6.6 kW from a 240-V outlet, and at 44 kW using a special 480-V charger. The Leaf’s fuel economy is 3.38 miles per kWh, the equivalent of 114 miles per gallon in a gasoline-powered car. Find (a) the range of the Leaf, assuming the battery can be fully depleted, (b) the charging time for each mode, and (c) the current delivered by the fully charged battery when the motor is operating at full power.
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The Nissan Leaf is an all-electric car powered by a 107-hp electric motor and a lithium-ion battery that stores 24 kWh and produces 394 V at its terminals when fully charged. The Leaf's battery can charge at the rate of 3.3 kW from a standard 120-V power outlet, at 6.6 kW from a 240-V outlet, and at 44 kW using a special 480-V charger. The Leaf's fuel economy is 3.38 miles per kWh, the equivalent of 114 miles per gallon in a gasoline-powered car. Find the current delivered by the fully charged battery when the motor is operating at full power.
A 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to 80.0 V, what will be the power dissipated by the same heater? (Assume the resistance of the heater is constant.)
a. 440 W
b. 660 W
c. 293 W
d. 73.3 W
When connected to a 120 V source, an electric heater is rated at 1200 W and a toaster at 6.0×10 2 W. If both appliances are operating in parallel on a 120-V circuit, what total current is delivered by an external source? (a) 12 A (b) 24 A (c) 32 A (d) 8.0 A (e) 15 A
Chapter 24 Solutions
Essential University Physics (3rd Edition)
Ch. 24.1 - Prob. 24.1GICh. 24.2 - Two wires carry the same current I. Wire A has a...Ch. 24.3 - Prob. 24.3GICh. 24.4 - You put a variable resistance across a battery...Ch. 24.5 - Todays power tools are often cordless, powered by...Ch. 24 - Explain the difference between current and current...Ch. 24 - A constant electric field generally produces a...Ch. 24 - When caught in the open in a lightning storm, a...Ch. 24 - Good conductors of electricity are often good...Ch. 24 - Why can current persist forever in a...
Ch. 24 - Does an electric stove burner draw more current...Ch. 24 - A person and a cow are standing in a field when...Ch. 24 - You put a 1.5-V battery across a piece of...Ch. 24 - Prob. 9FTDCh. 24 - A 50-W and a 100-W lightbulb are both designed to...Ch. 24 - Equation 24.8a suggests that no power can be...Ch. 24 - Whats wrong with this news report: A power-line...Ch. 24 - A wire carries 1.5 A. How many electrons pass...Ch. 24 - A 12-V car battery is rated at 80 ampere-hours,...Ch. 24 - Biologists measure the total current due to...Ch. 24 - The National Electrical Code specifies a maximum...Ch. 24 - The electric field in an aluminum wire is 85 mV/m....Ch. 24 - What electric field is necessary to drive a 7.5-A...Ch. 24 - Prob. 19ECh. 24 - A 1.0-cm-diameter rod carries a 50-A current when...Ch. 24 - Use Table 24.1 to determine the conductivity of...Ch. 24 - Find the resistance of a heating coil that draws...Ch. 24 - Prob. 23ECh. 24 - Whats the current in a 47-k resistor with 110 V...Ch. 24 - The third rail that carries electric power to a...Ch. 24 - What current flows when a 45-V potential...Ch. 24 - A uniform wire of resistance R is stretched until...Ch. 24 - A cars starter motor draws 125 A with 11 V across...Ch. 24 - A 4.5-W flashlight bulb draws 750 mA. (a) At what...Ch. 24 - A watch uses energy at the rate of 240 W. What...Ch. 24 - A 35- electric stove burner consumes 1.5 kW of...Ch. 24 - An incandescent lightbulb draws 0.50 A, while a...Ch. 24 - Though rare, electrocution has been reported under...Ch. 24 - You touch a defective appliance while standing on...Ch. 24 - You have a typical resistance of 100 k. (a) How...Ch. 24 - An ion channel in a cell membrane carries 2.4 pA...Ch. 24 - A lightbulb filament has diameter 0.050 mm and...Ch. 24 - A gold film in an integrated circuit measures 1.85...Ch. 24 - A copper wire joins an aluminum wire whose...Ch. 24 - Prob. 40PCh. 24 - In a study of proteins mediating cell membrane...Ch. 24 - Theres a 2.5-V potential difference between...Ch. 24 - The maximum safe current in 12-gauge...Ch. 24 - Silver and iron wires of the same length and...Ch. 24 - You have a cylindrical piece of material 2.4 cm...Ch. 24 - How must the diameters of copper and aluminum wire...Ch. 24 - Youre writing the instruction manual for a power...Ch. 24 - An implanted pacemaker supplies the heart with 72...Ch. 24 - A solid rectangular iron bar measures 0.50 cm by...Ch. 24 - Each pulse produced by the Taser described in the...Ch. 24 - The Nissan Leaf is an all-electric car powered by...Ch. 24 - An electric heater is tested by immersing it in...Ch. 24 - Magnetic effects involving Jupiters moon Io result...Ch. 24 - At a particular point in a material with...Ch. 24 - A thermally insulated container of seawater...Ch. 24 - Youre heading out for spring break, but your car...Ch. 24 - Two cylindrical resistors are made from the same...Ch. 24 - Youre working on a new high-speed rail system. It...Ch. 24 - A 100%-efficicnt electric motor is lifting a 15-N...Ch. 24 - A power plant produces 1000 MW to supply a city 40...Ch. 24 - Youre estimating costs for a new power line with...Ch. 24 - A 240-V electric motor is 90% efficient, meaning...Ch. 24 - A metal bar has rectangular cross section 5.0 cm...Ch. 24 - An immersion-type heating coil is connected to a...Ch. 24 - The resistivity of copper as a function of...Ch. 24 - Each atom in aluminum contributes about 3.5...Ch. 24 - Prob. 67PCh. 24 - Figure 24.20 shows a truncated cone of material...Ch. 24 - The current density in a particle beam with...Ch. 24 - Prob. 70PCh. 24 - You work for an automobile manufacturer developing...Ch. 24 - During the brownout, the current in conductors...Ch. 24 - Which of the following occurs in the conductors of...Ch. 24 - During the brownout, the power dissipated in...Ch. 24 - Prob. 75PP
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