Applied Physics
11th Edition
ISBN: 9780132719865
Author: EWEN, Dale
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 14RQ
Describe how energy is stored in a capacitor. How can the stored energy be used?
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A block of mass m₁
=
10.0 kg is connected to a block of mass m₂
34.0 kg by a massless string that passes over a light, frictionless pulley. The 34.0-kg block is connected to a spring that has negligible mass and a force constant of k = 200 N/m as shown in the figure below. The spring is
unstretched when the system is as shown in the figure, and the incline is frictionless. The 10.0-kg block is pulled a distance h = 22.0 cm down the incline of angle = 40.0° and released from rest. Find the speed of each block when the spring is again unstretched.
Vm1
×
1.32
Vm2
= 1.32
×
m/s
m/s
A block of mass m₁ = 10.0 kg is connected to a block of mass m₂ = 34.0 kg by a massless string that passes over a light, frictionless pulley. The 34.0-kg block is connected to a spring that has negligible mass and a force constant of k = 200 N/m as shown in the figure below. The spring is
unstretched when the system is as shown in the figure, and the incline is frictionless. The 10.0-kg block is pulled a distance h = 22.0 cm down the incline of angle 0 = 40.0° and released from rest. Find the speed of each block when the spring is again unstretched.
m/s
Vm1
Vm2
m/s
mi
m2
k
i
Truck suspensions often have "helper springs" that engage at high loads. One such arrangement is a leaf spring with a helper coil spring mounted on the axle, as in the figure below. The helper spring engages when the main leaf spring is compressed by distance yo, and then helps to
support any additional load. Consider a leaf spring constant of 5.45 × 105 N/m, helper spring constant of 3.60 × 105 N/m, and y = 0.500 m.
Truck body
Dyo
Axle
(a) What is the compression of the leaf spring for a load of 4.90 × 105 N?
m
(b) How much work is done compressing the springs?
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Chapter 19 Solutions
Applied Physics
Ch. 19.1 - What is the maximum voltage in an ac circuit in...Ch. 19.1 - The instantaneous voltage in an ac circuit at...Ch. 19.1 - If the maximum ac voltage on a line is 165 V, what...Ch. 19.1 - The maximum current in an ac circuit is 8.00 A....Ch. 19.1 - The instantaneous current in an ac circuit is 6.50...Ch. 19.1 - What is the maximum voltage in an ac circuit where...Ch. 19.1 - If the maximum ac voltage on a line is 145 V, what...Ch. 19.1 - The maximum current in an ac circuit is 5.75 A....Ch. 19.1 - Find the maximum current in an ac circuit where...Ch. 19.1 - The instantaneous voltage in an ac circuit at...
Ch. 19.1 - If Imax=4.59 A and 1=4.32 A, what is ?Ch. 19.1 - If 1=1.23 A and Imax=3.41 A, what is ?Ch. 19.1 - Find the effective value of an ac voltage whose...Ch. 19.1 - Find the maximum current in an ac circuit with an...Ch. 19.1 - Find the effective value of an ac voltage whose...Ch. 19.1 - Find the maximum current in an ac circuit with an...Ch. 19.1 - Find the effective value of a current in an ac...Ch. 19.1 - Find the effective value of an ac voltage whose...Ch. 19.1 - What is the maximum current in a circuit in which...Ch. 19.1 - Find the maximum current in a circuit in which an...Ch. 19.1 - A technician uses an oscilloscope to measure an...Ch. 19.1 - A technician uses a cathode ray oscilloscope to...Ch. 19.1 - A maximum voltage of 34.0 V is developed by an ac...Ch. 19.1 - A power plant generator develops a maximum voltage...Ch. 19.1 - A maximum current of 0.700 A flows through a...Ch. 19.1 - If the average power dissipated by an electric...Ch. 19.1 - If the average power dissipation by a hair dryer...Ch. 19.2 - Prob. 1PCh. 19.2 - What power is developed by a device that draws...Ch. 19.2 - Find the output power of a transformer with output...Ch. 19.2 - A heater operates on a 110-V line and is rated at...Ch. 19.2 - A heating element draws 6.00 A on a 220-V line....Ch. 19.2 - Prob. 6PCh. 19.2 - What power is used by a heater that has a...Ch. 19.2 - A heater operates on a 110-V line and is rated at...Ch. 19.2 - A 110- resistance coil draws a current of 5.00 A....Ch. 19.2 - What power is used by a heater with resistance...Ch. 19.2 - VP=30.0V VS=45.0V NS=15.0 turns Find NP.Ch. 19.2 - VP=250V NP=703turns NS=275 turns Find VS.Ch. 19.2 - IP=6.00 A IS=4.00 A VP=39.0 V Find VS.Ch. 19.2 - A step-up transformer on a 115-V line provides a...Ch. 19.2 - A step-down transformer on a 115-V line provides a...Ch. 19.2 - A transformer has 20.0 turns in the primary coil...Ch. 19.2 - If the current is 9.00 A in the primary coil in...Ch. 19.2 - If the voltage in the secondary coil of a...Ch. 19.2 - A neon sign has a transformer that changes...Ch. 19.2 - Prob. 20PCh. 19.2 - The current in the secondary coil of a transformer...Ch. 19.2 - A transformer steps down 6600 V to 120 V. (a) If...Ch. 19.2 - The primary coil of a step-down transformer has...Ch. 19.2 - A step-up transformer has 300 0 turns in the...Ch. 19.2 - A mechanic is testing a transformer that increases...Ch. 19.2 - Prob. 26PCh. 19.3 - Find the inductive reactance (in ohms) of each...Ch. 19.3 - Find the inductive reactance (in ohms) of each...Ch. 19.3 - Find the inductive reactance (in ohms) of each...Ch. 19.3 - Find the inductive reactance (in ohms) of each...Ch. 19.3 - What is the inductive reactance (in ohms) of a...Ch. 19.3 - Find the inductive reactance (in ohms) of a 655-H...Ch. 19.3 - Find the current (in amperes) in each inductive...Ch. 19.3 - Prob. 8PCh. 19.3 - Prob. 9PCh. 19.3 - Find the current (in amperes) in each inductive...Ch. 19.3 - Find the current (in amperes) in an inductive...Ch. 19.3 - Find the current (in amperes) in an inductive...Ch. 19.4 - For a circuit with R=200 ,L=10.0 mH, and f=1.25...Ch. 19.4 - For a circuit with R=12.0 ,L=1.00 mH, and f=900 Hz...Ch. 19.4 - For a circuit with R= 1.00 k, L=50.0 mH, and...Ch. 19.4 - For a circuit with resistance 2.00 k, inductance...Ch. 19.4 - For a circuit with resistance 300 , inductance...Ch. 19.5 - Find the capacitive reactance (in ohms) in each ac...Ch. 19.5 - Find the capacitive reactance (in ohms) in each ac...Ch. 19.5 - Find the capacitive reactance (in ohms) in each ac...Ch. 19.5 - Find the capacitive reactance (in ohms) in each ac...Ch. 19.5 - Find the capacitive reactance (in ohms) in each ac...Ch. 19.5 - Find the capacitive reactance of a 15.0 -F...Ch. 19.5 - Find the capacitive reactance of a 45.0 -F...Ch. 19.5 - Find the capacitive reactance of a 6.00-mF...Ch. 19.5 - Find the capacitive reactance of a 330 -F...Ch. 19.5 - Find the capacitive reactance of a 222 -F...Ch. 19.6 - For an ac circuit with R=1.00 k, C=1.00 F, E=100...Ch. 19.6 - For an ac circuit with R=375 , C=5.00 F, E=20.0V,...Ch. 19.6 - For an ac circuit with R=4.80 k, C=45.0 F,...Ch. 19.6 - For an ac circuit with resistance 145m,...Ch. 19.6 - For an ac circuit with resistance 10.0m,...Ch. 19.7 - Find the impedance and current in each ac circuit....Ch. 19.7 - R=225 , L=10.0 mH, C=0.200 F, f=1.00 kHz, E=15.0 V...Ch. 19.7 - Find the impedance and current in each ac circuit....Ch. 19.7 - R=1.00 k, L=0.700H, C=30.0 F, f=60.0 Hz, E=8.00 V...Ch. 19.7 - A circuit contains a 150 - resistance, a 35.0 -F...Ch. 19.7 - A circuit contains a 225- resistance, a 5.00 -F...Ch. 19.7 - A circuit contains a 175- resistance, a 4.50 -F...Ch. 19.7 - A circuit contains a 575- resistance, a 100 -F...Ch. 19.7 - A circuit contains a 450 - resistance, a 35.0 -F...Ch. 19.7 - A circuit contains a 375- resistance, a 500 -F...Ch. 19.8 - Find the resonant frequency in each ac circuit. 1....Ch. 19.8 - Find the resonant frequency in each ac circuit. 2....Ch. 19.8 - Find the resonant frequency in each ac circuit. 3....Ch. 19.8 - Find the resonant frequency in each ac circuit. 4....Ch. 19.8 - Find the resonant frequency in each ac circuit. 5....Ch. 19.8 - Find the resonant frequency of a circuit...Ch. 19.8 - Find the resonant frequency of a circuit...Ch. 19.8 - Find the resonant frequency of a circuit...Ch. 19.8 - Find the resonant frequency of a circuit...Ch. 19.8 - Find the resonant frequency of a circuit...Ch. 19.10 - Find the actual power produced by a generating...Ch. 19.10 - A generating station operates with a power factor...Ch. 19.10 - Find the apparent power produced by a generating...Ch. 19.10 - Find the apparent power produced by a generating...Ch. 19.10 - A generating station operates with a power factor...Ch. 19.10 - Find the apparent power produced by a generating...Ch. 19.10 - Find the actual power produced by a generating...Ch. 19.10 - A generating station operates with a power factor...Ch. 19.10 - Find the apparent power produced by a generating...Ch. 19.10 - Find the apparent power produced by a generating...Ch. 19.10 - Find the power factor of a generating station...Ch. 19.10 - Find the power factor of a generating station...Ch. 19 - Which of the following describes alternating...Ch. 19 - The voltage, e, and the current, i, in an...Ch. 19 - Which of the following affect the voltage induced...Ch. 19 - Which of the following contribute to the energy...Ch. 19 - Explain the difference between maximum current and...Ch. 19 - Explain the difference between maximum voltage and...Ch. 19 - Explain how power in an ac circuit is related to...Ch. 19 - Explain how power in an ac circuit is related to...Ch. 19 - If the number of turns in the secondary coil of a...Ch. 19 - Prob. 10RQCh. 19 - Discuss the importance of inductive reactance.Ch. 19 - How does the inductive reactance depend on...Ch. 19 - Prob. 13RQCh. 19 - Describe how energy is stored in a capacitor. How...Ch. 19 - Does the current lead or lag the voltage in a...Ch. 19 - Prob. 16RQCh. 19 - Discuss the condition that leads to resonance.Ch. 19 - What is the function of a diode in a circuit?Ch. 19 - Explain the difference between amplification and...Ch. 19 - Prob. 20RQCh. 19 - What is the maximum voltage in a circuit when the...Ch. 19 - If the maximum ac voltage on a line is 185 V, what...Ch. 19 - If the maximum ac voltage on a line is 175 V, what...Ch. 19 - What is the effective value of an ac voltage whose...Ch. 19 - What is the maximum current in a circuit with a...Ch. 19 - What power is developed by a device that draws...Ch. 19 - A heating element draws 4.50 A on a 110-V line....Ch. 19 - What power is used by a heater with resistance...Ch. 19 - A step-up transformer on a 115-V line provides a...Ch. 19 - An inductance of 48.0 mH is connected in series...Ch. 19 - A lamp with resistance 47.5 is connected in...Ch. 19 - (a) What current will flow in a 60.0-Hz ac series...Ch. 19 - A 21.6- resistor and a 38.5- F capacitor are...Ch. 19 - A circuit contains a 175- resistance, a 25.0 -F...Ch. 19 - A circuit contains a 115- resistance, a 35.0-F...Ch. 19 - (a) Find the resonant frequency of a circuit...Ch. 19 - (a) Find the resonant frequency of a circuit...Ch. 19 - Find the apparent power produced by a generating...Ch. 19 - A microwave oven is designed to draw 11.8 A of...Ch. 19 - Before converting alternating current to direct...Ch. 19 - Prob. 3ACCh. 19 - A 65.5-V, 60.0-Hz ac generator is connected to a...Ch. 19 - An AM radio tuner circuit has an inductance of 275...
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