menu
bartleby
search
close search
Hit Return to see all results
close solutoin list

Assume that electricity costs 15 cents per kilowatt- hour. Calculate the yearly cost of operating each of the following: a home computer that consumes 2.5 kWh per week a pool pump that consumes 300 kWh per week a hot tub that consumes 46 kWh per week a clothes dryer that consumes 20 kWh per week

BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 9, Problem 36E
Textbook Problem
13 views

Assume that electricity costs 15 cents per kilowatt- hour. Calculate the yearly cost of operating each of the following:

a home computer that consumes 2.5 kWh per week

a pool pump that consumes 300 kWh per week

a hot tub that consumes 46 kWh per week

a clothes dryer that consumes 20 kWh per week

Interpretation Introduction

Interpretation:

The yearly cost of operating each of the given devices is to be determined.

Concept introduction:

Unit conversion is defined as the process in which multiple steps are used to convert the unit of measurement for the same given quantity. It is determined by multiplication with a conversion factor.

The fraction in which numerator and denominator are the same quantities but are determined in different units, is known as a conversion factor.

Explanation of Solution

a) A home computer that consumes 2.5 kWh per week

The electricity cost is 15 cents per kilowatt-hour.

In one year, there are 52 weeks. In 52 weeks, the electricity used in kilowatt-hour is as follows:

In 1year=52 weekFor 1year=2.5 kWh1 week×52 week1 yearFor 1year=130 kWh

The cost of electricity for one kilowatt-hour is 15 cents. It is divided by 100 to convert in dollars. The number of a kilowatt-hour is multiplied with cost per kilowatt-hour as follows:

yearly cost=130 kWh×$0.15kWh=$20

Therefore, the yearly cost of home computer is $20.

b) A pool pump that consumes 300 kWh per week

The electricity cost is 15 cents per kilowatt-hour.

In one year, there are 52 weeks. In 52 weeks, the electricity used in kilowatt-hour is as follows:

In 1year=52 weekFor 1year=300 kWh×52 week1 yearFor 1year=15600 kWh

The cost of electricity for one kilowatt-hour is 15 cents. It is divided by 100 to convert in dollars. The number of a kilowatt-hour is multiplied with cost per kilowatt-hour as follows:

yearly cost=15600 kWh×$0.15kWh=$2340

Therefore, the yearly cost for a pool pump is $2340.

c) A hot tube consumes 46 kWh per week

The electricity cost is 15 cents per kilowatt-hour

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 9 Solutions

Chemistry In Focus
Show all chapter solutions
add
Ch. 9 - What is the difference between a hot object and a...Ch. 9 - From a molecular standpoint, explain how thermal...Ch. 9 - From a molecular standpoint, explain what heat and...Ch. 9 - List the four sectors of U.S. energy consumption...Ch. 9 - How much energy does the United States consume...Ch. 9 - Explain the first law of thermodynamics and its...Ch. 9 - What is entropy? Why is entropy important?Ch. 9 - Explain the second law of thermodynamics and its...Ch. 9 - What is a perpetual motion machine? Why can such a...Ch. 9 - Approximately how efficient are each of the...Ch. 9 - Define each of the following terms: a. heat b....Ch. 9 - Explain the difference between energy and power.Ch. 9 - What happens to the temperature of the...Ch. 9 - Which temperature scale(s) does not contain...Ch. 9 - What is heat capacity? How is it related to...Ch. 9 - What are our current energy sources and their...Ch. 9 - How long will each of the energy sources in the...Ch. 9 - Why are fossil fuels so named? Where do they come...Ch. 9 - Explain how a fossil-fuel-burning power plant...Ch. 9 - What are the environmental problems associated...Ch. 9 - List the four major components of smog and the...Ch. 9 - What does a catalytic converter do?Ch. 9 - What is the major cause of acid rain?Ch. 9 - Explain how acid rain is formed and its effects on...Ch. 9 - Explain the natural greenhouse effect.Ch. 9 - What would happen to Earths temperature if there...Ch. 9 - What is global warming? Is it occurring? What is...Ch. 9 - What do computer-based climate models predict will...Ch. 9 - How much have CO2 levels increased in the last...Ch. 9 - Which fossil fuel is the worst offender when it...Ch. 9 - Energy Units Perform each of the following...Ch. 9 - A person obtains approximately 2.5103 Calories a...Ch. 9 - A chocolate chip cookie contains about 200 kcal....Ch. 9 - An average person consumes about 2.0103 kcal of...Ch. 9 - Assume that electricity costs 15 cents per...Ch. 9 - Assume that electricity costs 15 cents per...Ch. 9 - Temperature Units Perform each of the following...Ch. 9 - Perform each of the following conversions: a....Ch. 9 - The coldest temperature ever measured in the...Ch. 9 - The warmest temperature ever measured in the...Ch. 9 - Chemical Reactions and Energy Calculate the amount...Ch. 9 - Calculate how many grams of each of the following...Ch. 9 - The useful energy that comes out of an energy...Ch. 9 - A typical 1000-MW electrical generating power...Ch. 9 - Heating the air in a particular house by 10C...Ch. 9 - Heating the water in a 55-gallon water heater...Ch. 9 - Greenhouse Gas Emissions For problem 45, calculate...Ch. 9 - For problem 46, calculate how much CO2 in grams is...Ch. 9 - Calculate the amount of carbon dioxide (in kg)...Ch. 9 - The amount of CO2 in the atmosphere is...Ch. 9 - The second law of thermodynamics has been called...Ch. 9 - You are camping and contemplating placing some hot...Ch. 9 - Some people have criticized the idea that...Ch. 9 - In the 1950s, the United States produced about the...Ch. 9 - The following graph shows U.S. carbon dioxide...

Additional Science Textbook Solutions

Find more solutions based on key concepts
Show solutions add
According to a national 2010 health report, a. most people's diets lacked enough fruits, vegetables, and whole ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What would be the ramifications if DNA were single stranded?

Chemistry for Today: General, Organic, and Biochemistry

Two planets X and Y travel counterclockwise in circular orbits about a star as shown in Figure P13.22. The radi...

Physics for Scientists and Engineers, Technology Update (No access codes included)

Describe diffusion in terms or entropy.

Biology: The Unity and Diversity of Life (MindTap Course List)