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An Introduction to Physical Science

14th Edition
James Shipman + 3 others
Publisher: Cengage Learning
ISBN: 9781305079137
BuyFind

An Introduction to Physical Science

14th Edition
James Shipman + 3 others
Publisher: Cengage Learning
ISBN: 9781305079137

Solutions

Chapter
Section
Chapter 4, Problem 2E
Textbook Problem

While rearranging a dorm room, a student does 400 J of work in moving a desk 2.0 m. What was the magnitude of the applied horizontal force?

Expert Solution
To determine
The magnitude of the force applied horizontally.

Explanation of Solution

Given info: The work done by the student is 400 J in moving a desk by a distance of 2.0 m .

Explanation:

Formula to calculate the work done is,

W=Fd

Here,

W is the work done

F is the force

d is the distance

Substitute 400 J for W and 2.0 m for d

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Chapter 4 Solutions

An Introduction to Physical Science
Show all chapter solutions
Ch. 4.4 - A student expends 7.5 W of power in lifting a...Ch. 4.4 - A household uses 2.00 kW of power each day for 1...Ch. 4.5 - How many common forms of energy are there, and...Ch. 4.5 - What are the two leading fuels consumed in the...Ch. 4.6 - What is the difference between alternative and...Ch. 4.6 - Why are solar power and wind power somewhat...Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4....Ch. 4 - Work is done on an object when it is ___. (4.1)...Ch. 4 - Which of the following is a unit of work? (4.1)...Ch. 4 - What is the SI unit of energy? (4.2) (a) ft lb...Ch. 4 - Which of the following objects has the greatest...Ch. 4 - A pitcher throws a fastball. When the catcher...Ch. 4 - The reference point for gravitational potential...Ch. 4 - When the height of an object is changed, the...Ch. 4 - Mechanical energy is ___. (4.2) (a) the sum of...Ch. 4 - On which of the following does the speed of a...Ch. 4 - Power is expressed by which of the following...Ch. 4 - If motor A has twice as much horsepower as motor...Ch. 4 - In the United States, which one of the following...Ch. 4 - Which one of the following would not be classified...Ch. 4 - Which of the following renewable energy sources...Ch. 4 - Work is equal to the force times the ___ distance...Ch. 4 - Work is a ___ quantity. (4.1)Ch. 4 - The unit N m is given the special name of ___ ....Ch. 4 - When energy is transferred from one object to...Ch. 4 - Mechanical energy consists of ___ and potential...Ch. 4 - The stopping distance of an automobile on a level...Ch. 4 - Kinetic energy is commonly referred to as the...Ch. 4 - The total energy of a(n) ___ system remains...Ch. 4 - The time rate of doing work is called ___, and is...Ch. 4 - A horsepower is equal to about ___ kW. (4.4)Ch. 4 - The kilowatt-hour (kWh) is a unit of ___ . (4.4)Ch. 4 - In the United States, ___ is the most consumed...Ch. 4 - Renewable energy sources cannot be ___ . (4.6)Ch. 4 - Gasohol is gasoline mixed with ___ . (4.6)Ch. 4 - What is required to do work?Ch. 4 - Do all forces do work? Explain.Ch. 4 - What does work on a shuffleboard puck as it slides...Ch. 4 - A weight lifter holds 900 N (about 200 lb) over...Ch. 4 - For the situation in Fig. 4.4a, if the applied...Ch. 4 - Car B is traveling twice as fast as car A, but car...Ch. 4 - Why are water towers very tall structures and...Ch. 4 - If the speed of a moving object is doubled, how...Ch. 4 - A book sits on a library shelf 1.5 m above the...Ch. 4 - (a) A car traveling at a constant speed on a level...Ch. 4 - An object is said to have a negative potential...Ch. 4 - Distinguish between total energy and mechanical...Ch. 4 - A ball is dropped from a height at which it has 50...Ch. 4 - When is total energy conserved? When is mechanical...Ch. 4 - A simple pendulum as shown in Fig. 4.24...Ch. 4 - Two students throw identical snowballs from the...Ch. 4 - A mass suspended on a spring is pulled down and...Ch. 4 - When you throw an object into the air, is its...Ch. 4 - Could motors with -hp and -hp outputs be used to...Ch. 4 - Persons A and B do the same job, but person B...Ch. 4 - What does a greater power rating mean in terms of...Ch. 4 - What do we pay the electric company for, power or...Ch. 4 - A 100-W light bulb uses how much more energy than...Ch. 4 - Which fuel is consumed the most in the United...Ch. 4 - Which fuel is used the most in the generation of...Ch. 4 - On average, how much energy do you radiate each...Ch. 4 - List some different general forms of energy (other...Ch. 4 - What are two examples of alternative energy...Ch. 4 - What are two examples of renewable energy sources?Ch. 4 - Which two renewable energy sources are affected by...Ch. 4 - Visualize the connections and give answers in the...Ch. 4 - A fellow student tells you that she has both zero...Ch. 4 - Two identical stones are thrown from the top of a...Ch. 4 - A person on a trampoline can go higher with each...Ch. 4 - With which of our five senses can we detect...Ch. 4 - What are three common ways to save electricity to...Ch. 4 - A worker pushes horizontally on a large crate with...Ch. 4 - While rearranging a dorm room, a student does 400...Ch. 4 - A 5.0-kilo bag of sugar is on a counter. How much...Ch. 4 - How much work is required to lift a 6.0-kg...Ch. 4 - A man pushes a lawn mower on a level lawn with a...Ch. 4 - If the man in Exercise 5 pushes the mower with 40%...Ch. 4 - How much work does gravity do on a 0.150-kg ball...Ch. 4 - A student throws the same ball straight upward to...Ch. 4 - (a) What is the kinetic energy in joules of a...Ch. 4 - A 60-kg student traveling in a car with a constant...Ch. 4 - What is the kinetic energy of a 20-kg dog that is...Ch. 4 - Which has more kinetic energy, a 0.0020-kg bullet...Ch. 4 - A 0.50-kg block initially at rest on a...Ch. 4 - How much farther would the force in Exercise 13...Ch. 4 - What is the potential energy of a 3.00-kg object...Ch. 4 - How much work is required to lift a 3.00-kg object...Ch. 4 - An object is dropped from a height of 12 m. At...Ch. 4 - A 1.0-kg rock is dropped from a height of 6.0 m....Ch. 4 - A sled and rider with a combined weight of 60 kg...Ch. 4 - A 30.0-kg child starting from rest slides down a...Ch. 4 - If the man in Exercise 5 pushes the lawn mower 6.0...Ch. 4 - If the man in Exercise 5 expended 60 W of power in...Ch. 4 - A student who weighs 556 N climbs a stairway...Ch. 4 - A 125-lb student races up stairs with a vertical...Ch. 4 - On a particular day, the following appliances are...Ch. 4 - A microwave oven has a power requirement of 1250...

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