Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 8, Problem 58TAS
Show that it costs 7 cents to operate a 25-W porch light for 24 h if electric energy costs 12c per kWh.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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.
The people who live in suburbs use simultaneously: 2Hp aircon for 3 hrs. 900 watts toaster for 9 mins., a 1.50kW heater for 8 hrs., a 3.4kW broiler for 20 mins. a four 100 watts lamps for 5 hrs. If the total cost she has to pay is $2.50, What is the unit cost per Kw-hr?
A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If electricity costs ₱ 9.0 per kWh, how much does it cost (in ₱) to run the computer annually?
Chapter 8 Solutions
Conceptual Physical Science (6th Edition)
Ch. 8 - Which part of an atom is positively charged, anti...Ch. 8 - How does the charge of one electron compare with...Ch. 8 - How do the masses of electrons compare with the...Ch. 8 - Prob. 4RCQCh. 8 - What kind of charge does an object acquire when...Ch. 8 - What is meant by saying that charge is conserved?Ch. 8 - How is Coulomb's law similar to Newton's law of...Ch. 8 - How does a coulomb of charge compare with the...Ch. 8 - How does the magnitude of electrical force between...Ch. 8 - How does an electrically polarized object differ...
Ch. 8 - Give two examples of common force fields.Ch. 8 - How is the direction of an electric field defined?Ch. 8 - In terms of the units that measure them,...Ch. 8 - A balloon may easily be charged to several...Ch. 8 - What condition is necessary for a sustained flow...Ch. 8 - How much energy is given to each coulomb of charge...Ch. 8 - Does electric charge flow across a circuit or...Ch. 8 - Distinguish between dc and ac.Ch. 8 - Does a battery produce dc or ac? Does the...Ch. 8 - Which has the greater resistance, a thick wire or...Ch. 8 - What is the unit of electrical resistance?Ch. 8 - What is the effect on current through a circuit of...Ch. 8 - Which has the greater electrical resistance, wet...Ch. 8 - What is the function of the third prong on the...Ch. 8 - What is the source of electrons that produces a...Ch. 8 - In a circuit consisting of two lamps connected in...Ch. 8 - If 6 V were impressed across the circuit in...Ch. 8 - How does the total current through the branches of...Ch. 8 - As more lanes are opened at a fast-food...Ch. 8 - What is the relationship among electric power,...Ch. 8 - Coulombs Law: F=kq1q2d2 35. Two point charges,...Ch. 8 - A toaster has a heating element of 15 and is...Ch. 8 - Show that when you touch your wet fingers...Ch. 8 - Calculate the current in the 240- filament of a...Ch. 8 - An electric toy draw 0.5 A from a 120-V outlet....Ch. 8 - Calculate the power of a hair dryer that operates...Ch. 8 - Two pellets, each with a charge of 1 microcoulomb...Ch. 8 - Two point changes are separated by 4 cm. The...Ch. 8 - Show that if the charges attracting each other in...Ch. 8 - A droplet of ink in an industrial ink-jet printer...Ch. 8 - A 12-V battery moves 4 C of charge from one...Ch. 8 - Suppose you could expend 10 joules of work to push...Ch. 8 - The potential difference between a storm cloud and...Ch. 8 - The power in watts marked on a light bulb is not...Ch. 8 - Rearrange the formula Current = voltage/resistance...Ch. 8 - Using the formula Power = current voltage, show...Ch. 8 - A dehumidifier with a resistance of 20 draws 6.0...Ch. 8 - An electric space heater dissipates 1320 W of...Ch. 8 - The total charge that an automobile battery can...Ch. 8 - Show that it costs 7 cents to operate a 25-W porch...Ch. 8 - Suppose you operate a 100-W lamp continuously for...Ch. 8 - An electric dryer connected to a 120-V source...Ch. 8 - For the electric dryer of the previous problem,...Ch. 8 - An incandescent light bulb with an operating...Ch. 8 - In periods of peak demand, power companies lower...Ch. 8 - The three pairs of same-size metal spheres have...Ch. 8 - Rank, from brightest to dimmest, the identical...Ch. 8 - The bulbs are identical. Ammeters are placed in...Ch. 8 - All bulbs, are identical in the circuits. An...Ch. 8 - All bulbs are identical in the circuits. A...Ch. 8 - Consider the three parts of the circuit. First...Ch. 8 - At the atomic level, what is meant by saying...Ch. 8 - Why is charge usually transferred by electrons...Ch. 8 - Why are objects with vast numbers of electrons...Ch. 8 - If you scuff electrons from your shoes while...Ch. 8 - Why do clothes often cling together after tumbling...Ch. 8 - An electroscope is a simple device consisting of a...Ch. 8 - The leaves of a changed electroscope collapse in...Ch. 8 - If electrons were positive and protons were...Ch. 8 - When you double the distance between a pair of...Ch. 8 - When you double the charge on only one of a pair...Ch. 8 - When you double the charge on both particles in a...Ch. 8 - If you rub an inflated balloon against your hair...Ch. 8 - If you rub an inflated balloon against your hair...Ch. 8 - When a car is moved into a painting chamber, a...Ch. 8 - By what specific means do the bits of fine threads...Ch. 8 - Suppose that the strength of the electric field...Ch. 8 - Suppose an investigator places first a free...Ch. 8 - Why is voltage often referred to as an electric...Ch. 8 - Why might the wingspans of birds be a...Ch. 8 - One example of a water system is a garden hose...Ch. 8 - How is a hydraulic pump that produces sustained...Ch. 8 - What is the difference between electric potential...Ch. 8 - Why is a good conductor of electricity also a good...Ch. 8 - Which travels at nearly the speed of light in an...Ch. 8 - Which flows through an electric circuit: voltage,...Ch. 8 - Would you expect to find dc or ac in the filament...Ch. 8 - Comment on the warning sign in the sketch.Ch. 8 - Which has the higher resistance: a lamp filament...Ch. 8 - Only a small percentage of the electric energy...Ch. 8 - What is the effect on the current in a wire if...Ch. 8 - Why is a bird perched on a high-voltage wire safe,...Ch. 8 - Say the bird perched on a high-voltage wire...Ch. 8 - What does it mean to say that an electric...Ch. 8 - If a current of one- or two-tenths of an ampere...Ch. 8 - Consider a water pipe that branches into two...Ch. 8 - Consider a circuit with a main wire that branches...Ch. 8 - Are automobile headlights wired in parallel or in...Ch. 8 - As more lanes are added to toll booths, the...Ch. 8 - (a) Which is the same for a 10- and a 20- resistor...Ch. 8 - If several bulbs are connected in series to a...Ch. 8 - Which is less damaging: plugging a 110-V appliance...Ch. 8 - What unit of measurement is meant by (a) joule per...Ch. 8 - What happens to the brightness of light emitted by...Ch. 8 - Why are LED lamps more efficient than incandescent...Ch. 8 - Is it correct to say that the energy from a car...Ch. 8 - A cars headlight dissipates 40 W on low beam and...Ch. 8 - The proportionality constant k in Coulombs law is...Ch. 8 - A friend says that the reason ones hair stands out...Ch. 8 - Your tutor tells you that an ampere and a volt...Ch. 8 - The circuit within an incandescent bulb is shown...Ch. 8 - In which of the following circuits does a current...Ch. 8 - Does more current "flow" out of a battery than...Ch. 8 - Sometimes you hear someone say that a particular...Ch. 8 - Does a lamp with a thick filament draw more...Ch. 8 - Is the current in a light bulb connected to a...Ch. 8 - Is the following label on a household product...Ch. 8 - The equivalent resistance of a pair of resistors...Ch. 8 - A friend says that a battery provides not a source...Ch. 8 - A friend says that adding bulbs in series to a...Ch. 8 - Consider a pair of flashlight bulbs connected to a...Ch. 8 - In the circuit shown, how do the three identical...Ch. 8 - As more and more bulbs are connected in series to...Ch. 8 - A battery has internal resistance, so when the...Ch. 8 - Are these circuits equivalent to one another? Why...Ch. 8 - Your friend says that electric current takes the...Ch. 8 - Consider a pair of incandescent bulbs, a 60-W bulb...Ch. 8 - Choose the BEST answer to the question or the BEST...Ch. 8 - When a pair of charged particles are brought twice...Ch. 8 - An electric field surrounds all (a) electrons. (b)...Ch. 8 - Electric potential and electric potential energy...Ch. 8 - Which statement(s) is(are) correct? (a) Voltage...Ch. 8 - When you double the voltage in a simple electric...Ch. 8 - When you double both the current and the voltage...Ch. 8 - In a simple circuit consisting of a single lamp...Ch. 8 - In a circuit with two lamps in parallel, if the...Ch. 8 - What is the power rating of a lamp connected to a...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Which coastal area experiences the smallest tidal range? ____________
Applications and Investigations in Earth Science (9th Edition)
33. Consider the reaction:
The tabulated data were collected for the concentration of C4H8 as a function...
Chemistry: Structure and Properties (2nd Edition)
2. The three ropes in FIGURE EX6.2 are tied to a small, very light ring. Two of the ropes are anchored to wa...
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
15. A good scientific hypothesis is based on existing evidence and leads to testable predictions. What hypothes...
Campbell Biology: Concepts & Connections (9th Edition)
[14.110] The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCI3) and chlorin...
Chemistry: The Central Science (14th Edition)
How do you think a cell performing cellular respiration rids itself of the resulting CO2?
Campbell Biology in Focus (2nd Edition)
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
- A hair dryer is rated at 1850 W. Assuming there are 30 days in a month, what is the monthly cost of using the hair dryer for an average of 12 minutes every day if you are charged 20 cents for every kW-h? $ 222arrow_forwardA certain house uses an average power of 485 Watts all day, everyday, for a 31 day month. If the energy costs are $0.21 per KW-hour, what is the house’s energy bill for this month? (Your answer is in dollars, so put $ for the units. Also, you'll round your final answer to the nearest cent.)arrow_forwardThe cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value. At this unit price, calculate the cost of the following. (a) Leaving a 80.0-W porch light on for 2 weeks while you are on vacation. $ 3.23 (b) Making a piece of dark toast in 3.00 min with a 860-W toaster. 0.00516 X Your response is off by a multiple of ten. (c) Drying a load of clothes in 40.0 min in a 5,800 W dryer. 0.464 X Your response is off by a multiple of ten.arrow_forward
- The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value. At this unit price, calculate the cost of the following. (a) Leaving a 40.0-W porch light on for 2 weeks while you are on vacation.$ (b) Making a piece of dark toast in 3.00 min with a 890-W toaster. (Give your answer to at least three decimal places.)¢(c) Drying a load of clothes in 40.0 min in a 5,100 W dryer. (Give your answer to at least one decimal place.)¢arrow_forwardA 400-W computer (including the monitor) is turned on for 8.0 hours per day. If electricity costs 10¢ per kWh, how much does it cost to run the computer annually for a typical 365-day year? $1200 none of the given choices $15 $150 $120arrow_forwardHow much energy is consumed by a 1.1 kW hair dryer used for 12 min? How much energy is consumed by a 12 W night light left on for 21 hr?arrow_forward
- How much electrical energy (in kilowatt hours) would a 45.0 W light bulb use in 60.0 days if left on steadily?arrow_forwardA 100-W driveway light bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb. (A) $3.65 B) $21.40 c) $73.00 D) $36.50arrow_forwardIn a household, a business is run for an average of 6 hours per day. The total power consumed by a computer and its printer is 205 watts. In addition, a 90-W light bulb runs during the same 6 hours. If their utility charges 11.75 cents per kWh, how much do the owners pay every 30-days?arrow_forward
- The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value. At this unit price, calculate the cost of the following. (a) Leaving a 60.0-W porch light on for 2 weeks while you are on vacation. $ ________ (b) Making a piece of dark toast in 3.00 min with a 870-W toaster. (Give your answer to at least three decimal places.) __________ ¢ (c) Drying a load of clothes in 40.0 min in a 5,300 W dryer. (Give your answer to at least one decimal place.) __________¢arrow_forwardIn a sunnier location than Eugene, the sun shines for an average of 2000 hours per year. A home owner installs solar panels that generate 3.5 kW from these panels when the sun is shining. If the local electric utility charges $0.15 per kWh, how much money do the solar panels save the home owner per year? Give the answer to the nearest dollar.arrow_forwardAt roughly $0.10/kWh, what does it cost to leave a 25-W porch light on day and night for a year? Hint: 1kWh = 3.6 × 10°Joules $29.80 $54.30 $6833.33 $16.90arrow_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
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
How To Solve Any Resistors In Series and Parallel Combination Circuit Problems in Physics; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=eFlJy0cPbsY;License: Standard YouTube License, CC-BY