COLLEGE PHYSICS,V.2
11th Edition
ISBN: 9781305965522
Author: SERWAY
Publisher: CENGAGE L
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Question
Chapter 21, Problem 6CQ
(a)
To determine
What is that oscillates when light travel across a given region.
(b)
To determine
What is that transported when light travel across a given region.
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1. The average KE and temperature in Kelvin of the molecules of a gas are related by the
equation KE = 3/2 KT where k is the Boltzmann constant 1.38 x 10 m² kg s².
The diagram shows the energy levels for a Hydrogen atom.
Energy/eV
0.00
-1.51
3.39
13.58
Use this information to show that Hydrogen at room temperature will not emit light.
2. When hydrogen burns in oxygen 241.8 kJ of energy are released per mole. Show that this
reaction can produce light.
3. By using the fact that around any closed loop the sum of the EMFS = the sum of the PDs. Write
equations for the two loops shown in the cct below.
40
ΔΩ
I₂
4V
(loop1
20 (loop2) 2v
I+12
Use these equations to show that the current flowing through the 20 resistor is 0.75A
5. A potential divider circuit is made by stretching a 1 m long wire with a resistance of 0.1 per cm
from A to B as shown.
8V
A
100cm
B
sliding contact
5Ω
A varying PD is achieved across the 5 Q resistor by moving the slider along the resistance wire.
Calculate the distance from A when the PD across the 5 Q resistor is 6 V.
Chapter 21 Solutions
COLLEGE PHYSICS,V.2
Ch. 21.1 - Which of the following statements can be true for...Ch. 21.4 - For the circuit in Figure 21.8, is the...Ch. 21.4 - Prob. 21.3QQCh. 21.4 - Suppose XL XC in Figure 21.12. If switch A is...Ch. 21.4 - Suppose XL Xc in Figure 21.12. If switch A is...Ch. 21.4 - Prob. 21.6QQCh. 21.11 - In an apparatus such as the one in Figure 21.22....Ch. 21.12 - Which of the following statements are true about...Ch. 21 - An RLC circuit connected across an AC voltage...Ch. 21 - (a) Does the phase angle in an RLC series circuit...
Ch. 21 - Prob. 3CQCh. 21 - Receiving radio antennas can be in the form of...Ch. 21 - The following statements are related to an RLC...Ch. 21 - Prob. 6CQCh. 21 - In space sailing, which is a proposed alternative...Ch. 21 - Prob. 8CQCh. 21 - A resistor, capacitor, and inductor are connected...Ch. 21 - Prob. 10CQCh. 21 - Why should an infrared photograph of a person look...Ch. 21 - If a high-frequency current is passed through a...Ch. 21 - Prob. 13CQCh. 21 - Why is the sum of the maximum voltages across each...Ch. 21 - If the resistance in an RLC circuit remains the...Ch. 21 - An inductor and a resistor are connected in series...Ch. 21 - A capacitor and a resistor are connected in series...Ch. 21 - Prob. 18CQCh. 21 - Which of the following statements is true...Ch. 21 - (a) What is the resistance of a light bulb that...Ch. 21 - Prob. 2PCh. 21 - A 1.5-k resistor is connected to an AC voltage...Ch. 21 - Figure P21.4 show three lamp connected to a 120.-V...Ch. 21 - A 24.0-k resistor connected to an AC voltage...Ch. 21 - The output voltage of an AC generator is given by...Ch. 21 - (a) For what frequencies does a 22.0-F capacitor...Ch. 21 - North American outlets supply AC electricity with...Ch. 21 - When a 4.0-F capacitor is connected to a generator...Ch. 21 - An AC generator with an output rms voltage of 36.0...Ch. 21 - What maximum current is delivered by an AC source...Ch. 21 - A generator delivers an AC voltage of the form v =...Ch. 21 - Prob. 13PCh. 21 - An AC power source has an rms voltage of 120 V and...Ch. 21 - In a purely inductive AC circuit as shown in...Ch. 21 - The output voltage of an AC generator is given by...Ch. 21 - Prob. 17PCh. 21 - A sinusoidal voltage v = (80.0 V) sin (150t) is...Ch. 21 - A series RLC circuit has resistance R = 50.0 and...Ch. 21 - An inductor (L = 400. mH), a capacitor (C = 4.43...Ch. 21 - A resistor (R = 9.00 102 ), a capacitor (C =...Ch. 21 - A 50.0-H resistor, a 0.100-H inductor, and a...Ch. 21 - A series RLC circuit has resistance R = 12.0 ,...Ch. 21 - An AC source operating at 60. Hz with a maximum...Ch. 21 - A person is working near the secondary of a...Ch. 21 - A 60.0- resistor is connected in series with a...Ch. 21 - A series AC circuit contains a resistor, an...Ch. 21 - At what frequency does the inductive reactance of...Ch. 21 - An AC source with a maximum voltage of 150. V and...Ch. 21 - An AC source operating at 60. Hz with a maximum...Ch. 21 - A multimeter in an RL circuit records an rms...Ch. 21 - Prob. 32PCh. 21 - An RLC circuit has resistance R = 225 and...Ch. 21 - Prob. 34PCh. 21 - An inductor and a resistor are connected in...Ch. 21 - Consider a series RLC circuit with R = 25 , L =...Ch. 21 - An RLC circuit is used in a radio to tune into an...Ch. 21 - The resonant frequency of a certain series RLC...Ch. 21 - The AM bind extends from approximately 300. kHz to...Ch. 21 - Electrosurgical units (ESUs) supply high-frequency...Ch. 21 - Two electrical oscillators are used in a...Ch. 21 - A series circuit contains a 3.00-H inductor, a...Ch. 21 - The primary coil of a transformer has N1 = 250....Ch. 21 - A step-down transformer is used for recharging the...Ch. 21 - An AC power generator produces 50. A (rms) at 3...Ch. 21 - An ideal neon sign transformer provides 9 250 V at...Ch. 21 - Prob. 47PCh. 21 - A transmission line that has a resistance per unit...Ch. 21 - The U.S. Navy has long proposed the construction...Ch. 21 - (a) The distance to Polaris, the North Star, is...Ch. 21 - Prob. 51PCh. 21 - The speed of light in vacuum is defined to be...Ch. 21 - Oxygenated hemoglobin absorbs weakly in the red...Ch. 21 - Operation of the pulse oximeter (see previous...Ch. 21 - Prob. 55PCh. 21 - A laser beam is used to levitate a metal disk...Ch. 21 - Prob. 57PCh. 21 - Prob. 58PCh. 21 - Prob. 59PCh. 21 - A diathermy machine, used in physiotherapy,...Ch. 21 - What are the wavelength ranges in (a) the AM radio...Ch. 21 - An important news announcement is transmitted by...Ch. 21 - Prob. 63PCh. 21 - A spaceship is approaching a space station at a...Ch. 21 - Police radar guns measure the speed of moving...Ch. 21 - A speeder tries to explain to the police that the...Ch. 21 - A 25.0-mW laser beam of diameter 00 mm is...Ch. 21 - The intensity of solar radiation at the top of...Ch. 21 - Prob. 69APCh. 21 - In an RLC series circuit that includes a source of...Ch. 21 - As a way of determining the inductance of a coil...Ch. 21 - (a) What capacitance will resonate with a one-turn...Ch. 21 - A dish antenna with a diameter of 20.0 m receives...Ch. 21 - A particular inductor has appreciable resistance....Ch. 21 - Prob. 75APCh. 21 - Prob. 76AP
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- 4. A voltmeter with resistance 10 kQ is used to measure the pd across the 1 kQ resistor in the circuit below. 6V 5ΚΩ 1ΚΩ V Calculate the percentage difference between the value with and without the voltmeter.arrow_forward1. A 9V battery with internal resistance 5 2 is connected to a 100 2 resistor. Calculate: a. the Power dissipated in the 100 2 resistor b. The heat generated per second inside the battery. C. The rate of converting chemical to electrical energy by the battery. 2. A 230 V kettle is rated at 1800 W. Calculate the resistance of the heating element.arrow_forward2. If each of the resistors in the circuit below has resistance R show that the total resistance between A and B is 5R/11 A Barrow_forward
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