College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 22, Problem 7CQ
Electric-power companies like to have their power factors as close to unity as possible. Why?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
ayout
12
Font
Saved
: On
x A
Review
References Mailings
A A
Aa A
O A
Y
View
Physics-Problem Solving Entries
Stock of Data
Solution
Paragraph
Accessibility: Good to go
Search
¶
Help
6. Calculate the cost (in cents) of using a 200 watt television for 30 days if turned on 2 hours per
day and if electricity costs 10 cents per kilowatt-hour.
Key Idea Calculate cost in cents of using a 200W television.
Normal
No Spacing
¡I
Styles
Heading 1
b
OF
One 9-volt battery contains 19.0 thousand joules of energy. A 4-pack of 9-volt batteries cost $14.40 at Lowe's.
Estimate the cost of battery energy in dollars per kilowatt-hour. Energy conversions are available in Section 2.2 of the textbook.
Round your final answer to the nearest $10 per kilowatt-hour.
The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is 8.8¢/kWh, and the clothesdryer is used for 700 hours in a year, what is the power rating of the clothes dryer? Explain clearly.
Chapter 22 Solutions
College Physics (10th Edition)
Ch. 22 - For a series ac R-L-C circuit, (a) why do the...Ch. 22 - Prob. 2CQCh. 22 - Prob. 3CQCh. 22 - At high frequencies, a capacitor becomes a short...Ch. 22 - Prob. 5CQCh. 22 - The current in an ac power line changes direction...Ch. 22 - Electric-power companies like to have their power...Ch. 22 - Prob. 8CQCh. 22 - When a series-resonant circuit is connected across...Ch. 22 - Is it possible for the power factor of an R-L-C ac...
Ch. 22 - During the last quarter of the 19th century, there...Ch. 22 - In an ac circuit, why is the average power...Ch. 22 - A piece of electrical equipment in an ac circuit...Ch. 22 - A light bulb is the resistance in a series R-L-C...Ch. 22 - A series R-L-C ac circuit with a sinusoidal...Ch. 22 - In a series R-L-C circuit powered by an ac...Ch. 22 - In a series R-L-C circuit powered by an ac...Ch. 22 - In a series R-L-C circuit powered by an ac...Ch. 22 - A series circuit contains an inductor, a resistor,...Ch. 22 - Prob. 8MCPCh. 22 - If the root-mean-square currant in an ac circuit...Ch. 22 - In a series R-L-C circuit, the voltage source...Ch. 22 - In an R-L-C ac series circuit, if the resistance...Ch. 22 - In a series R-L-C ac circuit at resonance, A. the...Ch. 22 - Prob. 1PCh. 22 - An electric motor is being powered with a voltage...Ch. 22 - A capacitance C and an inductance L are operated...Ch. 22 - the angular frequency in part (a), and what is the...Ch. 22 - Circuit design. You are designing an amplifier...Ch. 22 - A 2.20F capacitor is connected across an ac source...Ch. 22 - The voltage amplitude of an ac source is 25.0 V,...Ch. 22 - Find the current amplitude if the self-inductance...Ch. 22 - A sinusoidal ac voltage source in a circuit...Ch. 22 - A 65 resistor, an 8.0 F capacitor, and a 35 mH...Ch. 22 - In an R-L-C series circuit, the rms voltage across...Ch. 22 - A 1500 resistor is connected in series with a 350...Ch. 22 - (a) Compute the impedance of a series R-L-C...Ch. 22 - A 200 resistor is in series with a 0.100 H...Ch. 22 - A hair dryer is designed to produce 1200 W of...Ch. 22 - A series R-L-C circuit is connected to a 120 Hz ac...Ch. 22 - The circuit in Problem 13 carries an rms current...Ch. 22 - A series ac circuit contains a 250 resistor, a 15...Ch. 22 - An ac series R-L-C circuit contains a 120 w...Ch. 22 - (a) At what angular frequency will a 5.00 F...Ch. 22 - In an R-L-C series circuit, R = 150 , L = 0.750 H,...Ch. 22 - You need to make a series ac circuit having a...Ch. 22 - A series circuit consists of an ac source of...Ch. 22 - In a series R-L-C circuit, R = 400 , L = 0.350 H,...Ch. 22 - In a series R-L-C circuit, L = 0.200 H, C = 80.0...Ch. 22 - In an R-L-C series circuit, R = 300 , L = 0.400 H,...Ch. 22 - A solenoid has a resistance of 48.0 and an...Ch. 22 - A large electromagnetic coil is connected to a 120...Ch. 22 - A parallel-plate capacitor having square plates...Ch. 22 - At a frequency 1, the reactance of a certain...Ch. 22 - An electrical engineer is designing an R-L-C...Ch. 22 - Consider the circuit sketched in Figure 22.22. The...Ch. 22 - In a series R-L-C circuit, the components have the...Ch. 22 - (a) Show that for an R-L-C series circuit the...Ch. 22 - In an R-L-C series circuit, the magnitude of the...Ch. 22 - In a series R-L-C circuit, R = 300 , XC = 300 ,...Ch. 22 - In a series R-L-C circuit, the phase angle is...Ch. 22 - A 100.0 resistor, a 0.100 F capacitor, and a...Ch. 22 - Consider the same circuit as in the preceding...Ch. 22 - Converting dc to ac. An individual cell such as an...Ch. 22 - If the electrode oscillates between two points 20 ...Ch. 22 - Converting dc to ac. An individual cell such as an...Ch. 22 - Converting dc to ac. An individual cell such as an...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Radio astronomers detect electromagnetic radiation at a frequency of 42 MHz from an interstellar gas cloud. If ...
Essential University Physics (3rd Edition)
At the MIT Magnet Laboratory, energy is stored in huge solid flywheels of mass 7.7 104 kg and radius 2.4 m. Th...
Essential University Physics: Volume 1 (3rd Edition)
20. What kinds of waves exhibit interference?
Conceptual Physical Science (6th Edition)
60. You are 9.0 m from the door of your bus, behind the bus, when it pulls away with an acceleration of 1.0 m/...
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Explain all answers clearly, using complete sentence and proper essay structure if needed. An asterisk (*) desi...
Cosmic Perspective Fundamentals
If two points are at the same potential, does this mean that no work is done in moving a test charge from one p...
Physics for Scientists and Engineers with Modern Physics
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Why do we need to be careful about work done on the system versus work done by the system in calculations?arrow_forwardSuppose you use 60 kWh (kilowatt hours) of electricity at $0.31 per kWH, 96 kWh at $0.27 per kWh, and 87 kWH at $0.22 per kWh. What is your total kHW of electricity used?arrow_forwardAt home I have a 350W motorized washing machine that I use to wash three times a week, 2 batches of clothes of 22 minutes each each time. Based on this problem, answer the following questions: a) How much energy in Joules do I "consume" in a year? (use 52 weeks for your calculation) b) based on the conditions of the previous question, what consumption would you have in kWh? c) How much do I pay, annually, in dollars, for the use of the washing machine, if the rate for energy from my electric company is 0.17443 / kWh?arrow_forward
- 13. Consider a square wire with side length 5 mm and conduc- tion electron density 6.0 x 1028 3 with 1.2 A of current flowing through it. a) What is the current density? (include units) 1arrow_forwardSuppose you use 57 kWh (kilowatt hours) of electricity at $0.35 per kWH, 91 kWh at $0.26 per kWh, and 82 kWH at $0.24 per kWh. What is your total kHW of electricity used? Note: Our electricity bills are calculated exactly in this manner, either based on blocks of usage.arrow_forwardElectric PowerDirections: Answer the following problem, write your answer with complete solution. A 350 W laptop is used daily for 9 hours in teaching. How many kWh are consumed bythe laptop in one month and in six months?arrow_forward
- Please explain why.arrow_forwardWhy electric cars (which are amazing) still stink at towing and going up mountains. A family in Charlotte wants to drive to a campsite next to Mt. Mitchell. Their trip will take them 2km up in elevation. They have the choice of taking their top-of-the-Iline Tesla model S P100D, which when fully charged has 100 kWh of stored energy in the batteries (and for this problem is 100% efficient at converting its stored energy into kinetic energy) and a mass of 2200kg, or their choice of taking their 2021 Ford F-150. Gasoline has an energy density of 34.2 Megajoules per liter. The family owns the smallest 2021 Ford F-150, and so it has a fuel tank of 23 gallons. Assume the F-150's engine is able to convert 30% of the energy stored in its gasoline tank into kinetic energy (typical efficiency for gasoline engines), with the rest of the stored energy in the gasoline lost to heat. The mass of this model F-150 is about 2000kg. They are going to tow their big pop-up trailer to the campsite. For this…arrow_forwardYou have a 1300 W toaster. How much electrical energy in Joules is needed to make a slice of toast? (cooking time = 1 minute) At 12 cents/kWh, how many cents does this cost?arrow_forward
- Suppose you have a 2000 Watt water heater that is on for a total of 150 hours a month. How much will this cost you at a rate of 10 cents per kW*hr?arrow_forwardConsider a battery used to supply energy to a cellular phone.Construct a problem in which you determine the energy that must be supplied by the battery, and then calculate the amount of charge it must be able to move in order to supply this energy. Among the things to be considered are the energy needs and battery voltage. You may need to lookahead to interpret manufacturer’s battery ratings in amperehours as energy in joules.arrow_forwardWhy do you think it is safe for a small bird or a squirrel to stand on high voltage power lines, but it is not safe if you were to reach up and grab the exact same power line?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Ohm's law Explained; Author: ALL ABOUT ELECTRONICS;https://www.youtube.com/watch?v=PV8CMZZKrB4;License: Standard YouTube License, CC-BY