Connect with LearnSmart for Krauskopf: ...16th EditionKRAUSKOPF, Konrad B. Publisher: Mcgraw-hill Higher Education (us)ISBN: 9781259663895
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Solutions for Connect with LearnSmart for Krauskopf: The Physical Universe, 16e
Problem 1MC:
Which of the following is not a unit of work? a. newton-meter b. joule c. kilogram-meter d....Problem 2MC:
An object at rest may have a. velocity b. momentum c. kinetic energy d. potential energyProblem 3MC:
A moving object must have which one or more of the following? a. potential energy b. kinetic energy...Problem 4MC:
When the momentum of a moving object is increased, there must also be an increase in which one or...Problem 5MC:
The total amount of energy (including the rest energy of matter) in the universe a. cannot change b....Problem 6MC:
When the speed of a moving object is halved, a. its KE is halved b. its PE is halved c. its rest...Problem 7MC:
Two balls, one of mass 5 kg and the other of mass 10 kg, are dropped simultaneously from a window....Problem 8MC:
A bomb dropped from an airplane explodes in midair. a. Its total kinetic energy increases. b. Its...Problem 9MC:
The operation of a rocket is based upon a. pushing against its launching pad b. pushing against the...Problem 10MC:
A spinning skater whose arms are at her sides then stretches out her arms horizontally. a. She...Problem 12MC:
The formula 12 mv2 for kinetic energy a. is the correct formula if v is properly interpreted b....Problem 13MC:
A spacecraft has left the earth and is moving toward Mars. An observer on the earth finds that,...Problem 14MC:
The upper limit to the speed of an object with mass a. depends on the mass b. corresponds to a KE...Problem 15MC:
It is not true that a. light is affected by gravity b. the mass of a moving object depends upon its...Problem 16MC:
Albert Einstein did not discover that a. the length of a moving object is less than its length at...Problem 17MC:
The work done in holding a 50-kg object at a height of 2 m above the floor for 10 s is a. 0 b. 250 J...Problem 18MC:
The work done in lifting 30 kg of bricks to a height of 20 m is a. 61 J b. 600 J c. 2940 J d. 5880 JProblem 19MC:
A total of 4900 J is used to lift a 50-kg mass. The mass is raised to a height of a. 10 m b. 98 m c....Problem 20MC:
The work a 300-W electric grinder can do in 5.0 min is a. 1 kJ b. 1.5 kJ c. 25 kJ d. 90 kJProblem 21MC:
A 150-kg yak has an average power output of 120 W. The yak can climb a mountain 1.2 km high in a. 25...Problem 22MC:
A 40-kg boy runs up a flight of stairs 4 m high in 4 s. His power output is a. 160 W b. 392 W c. 40...Problem 23MC:
Car A has a mass of 1000 kg and is moving at 60 km/h. Car B has a mass of 2000 kg and is moving at...Problem 24MC:
A 1-kg object has a potential energy of 1 J relative to the ground when it is at a height of a....Problem 25MC:
A 1-kg object has kinetic energy of 1 J when its speed is a. 0.45 m/s b. 1 m/s c. 1.4 m/s d. 4.4 m/sProblem 26MC:
The 2-kg blade of an ax is moving at 60 m/s when it strikes a log. If the blade penetrates 2 cm into...Problem 28MC:
A machine has a MA of 6.0. The work input needed by the machine to raise a 40-kg load by 3.0 m is a....Problem 29MC:
A person uses a force of 300 N to pry up one end of a 120-kg box using a lever 2.4 m long. The...Problem 30MC:
A 1-kg ball is thrown in the air. When it is 10 m above the ground, its speed is 3 m/s. At this time...Problem 31MC:
A 10,000-kg freight car moving at 2 m/s collides with a stationary 15,000-kg freight car. The two...Problem 32MC:
A 30-kg girl and a 25-kg boy are standing on frictionless roller skates. The girl pushes the boy,...Problem 33MC:
An object has a rest energy of 1 J when its mass is a. 1.1 1017 kg b. 3.3 109 kg c. 1 kg d. 9 ...Problem 34MC:
The smallest part of the total energy of the ball of Multiple Choice 30 is a. kinetic energy b....Problem 35MC:
The lightest particle in an atom is an electron, whose rest mass is 9.1 1031 kg. The energy...Problem 2E:
Under what circumstances (if any) is no work done on a moving object even though a net force acts...Problem 3E:
The sun exerts a gravitational force of 4.0 1028 N on the earth, and the earth travels 9.4 1011 m...Problem 4E:
A crate is pushed across a horizontal floor at constant speed by a horizontal force of 140 N, which...Problem 5E:
A total of 490 J of work is needed to lift a body of unknown mass through a height of 10 m. What is...Problem 6E:
A woman eats a cupcake and proposes to work off its 400-kJ energy content by exercising with a 15-kg...Problem 7E:
The acceleration of gravity on the surface of Mars is 3.7 m/s2. If an astronaut in a space suit can...Problem 9E:
The motor of a boat develops 60 kW when the boats speed is 15 km/h. With how much force does the...Problem 10E:
How much power must the legs of a 70-kg man develop in order to run up a staircase 5 m high in 9 s?Problem 11E:
A weightlifter raises a 70-kg barbell from the floor to a height of 2.2 m in 1.2 s. What was his...Problem 12E:
An escalator 14 m long is carrying a 70-kg person from one floor to another 8 m higher. The...Problem 13E:
A 700-kg horse whose power output is 1.0 hp is pulling a sled over the snow at 3.5 m/s. Find the...Problem 14E:
A persons metabolic processes can usually operate at a power of 6 W/kg of body mass for several...Problem 15E:
A crane whose motor has a power input of 5.0 kW lifts a 1200-kg load of bricks through a height of...Problem 16E:
A total of 104 kg of water per second flows over a waterfall 30 m high. If half of the power this...Problem 17E:
Which of these energies might correspond to the KE of a person riding a bicycle on a road: 10 J; 1...Problem 19E:
A moving object whose initial KE is 10 J is subject to a frictional force of 2 N that acts in the...Problem 20E:
Is the work needed to bring a cars speed from 0 to 10 km/h less than, equal to, or more than the...Problem 21E:
A 1-kg salmon is hooked by a fisherman and it swims off at 2 m/s. The fisherman stops the salmon in...Problem 23E:
How long will it take a 1000-kg car with a power output of 20 kW to go from 10 m/s to 20 m/s?Problem 24E:
Does every moving body possess kinetic energy? Does every stationary body possess potential energy?Problem 25E:
As we will learn in Chap. 6, electric charges of the same kind (both positive or both negative)...Problem 26E:
A 60-kg woman jumps off a wall 80 cm high and lands on a concrete road with her knees stiff. Her...Problem 28E:
A 3-kg stone is dropped from a height of 100 m. Find its kinetic and potential energies when it is...Problem 31E:
A ball is dropped from a height of 1 m and loses 10 percent of its kinetic energy when it bounces on...Problem 32E:
A person sitting under a coconut palm is struck by a 1-kg coconut that fell from a height of 20 m....Problem 33E:
A skier is sliding downhill at 8 m/s when she reaches an icy patch on which her skis move freely...Problem 34E:
A force of 10 N is used to lift a 600-g ball from the ground to a height of 1.8 m, when it is let...Problem 35E:
A person uses a force of 49 N to raise a 30-kg load by 1.5 m with a pulley system. How much rope did...Problem 37E:
The human forearm is a class III lever. Find the force the biceps muscle of an upper arm must...Problem 38E:
A ramp 20 m long slopes down 1.2 m to the edge of a lake. A force of 300 N is needed to pull a boat...Problem 39E:
In an effort to lose weight, a person runs 5 km per day at a speed of 4 m/s. While running, the...Problem 40E:
An 80-kg crate is raised 2 m from the ground by a man who uses a rope and a system of pulleys. He...Problem 41E:
An 800-kg car coasts down a hill 40 m high with its engine off and the drivers foot pressing on the...Problem 42E:
(a) When an object at rest explodes into two parts that fly apart, must they move in exactly...Problem 43E:
A golf ball and a Ping-Pong ball are dropped in a vacuum chamber. When they have fallen halfway to...Problem 44E:
Is it possible for an object to have more kinetic energy but less momentum than another object? Less...Problem 46E:
The speed of an airplane doubles in flight. (a) How is the law of conservation of momentum obeyed in...Problem 48E:
What, if anything, happens to the speed of a fighter plane when it fires a cannon at an enemy plane...Problem 49E:
A ball of mass m rolling on a smooth surface collides with a stationary ball of mass M. (a) Under...Problem 50E:
A railway car is at rest on a frictionless track. A man at one end of the car walks to the other...Problem 51E:
An empty dump truck coasts freely with its engine off along a level road. (a) What happens to the...Problem 52E:
A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed...Problem 53E:
A 30-kg girl who is running at 3 m/s jumps on a stationary 10-kg sled on a frozen lake. How fast...Problem 54E:
A 70-kg man and a 50-kg woman are in a 60-kg boat when its motor fails. The man dives into the water...Problem 55E:
The 176-g head of a golf club is moving at 45 m/s when it strikes a 46-g golf ball and sends it off...Problem 56E:
A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and...Problem 57E:
The two skaters of Exercise 56 are moving in opposite directions when they collide and stick...Problem 58E:
A 1000-kg car moving east at 80 km/h collides head-on with a 1500-kg car moving west at 40 km/h, and...Problem 60E:
All helicopters have two rotors. Some have both rotors on vertical axes but rotating in opposite...Problem 61E:
The earthquake that caused the Indian Ocean tsunami of 2004 (see Fig. 14.40) led to changes in the...Problem 62E:
What are the two postulates from which Einstein developed the special theory of relativity?Problem 63E:
The theory of relativity predicts a variety of effects that disagree with our everyday experience....Problem 65E:
The length of a rod is measured by several observers, one of whom is stationary with respect to the...Problem 66E:
Under what circumstances does it become conspicuous that the formula KE = 12 mv2 understates the...Problem 68E:
The potential energy of a golf ball in a hole is negative with respect to the ground. Under what...Problem 69E:
What is the effect on the law of conservation of energy of the discovery that matter and energy can...Problem 70E:
A certain walking person uses energy at an average rate of 300 W. All of this energy has its...Problem 71E:
One kilogram of water at 0C contains 335 kJ of energy more than 1 kg of ice at 0C. What is the mass...Problem 72E:
When 1 g of gasoline is burned in an engine, about 48 kJ of heat is produced. How much mass is lost...Sample Solutions for this Textbook
We offer sample solutions for Connect with LearnSmart for Krauskopf: The Physical Universe, 16e homework problems. See examples below:
Chapter 1, Problem 1MCChapter 2, Problem 1MCChapter 2, Problem 60EChapter 2, Problem 86EChapter 3, Problem 1MCChapter 3, Problem 56EChapter 3, Problem 57EChapter 3, Problem 58EChapter 4, Problem 1MC
Given Info: Two thermometers, one calibrated in °F and the other in °C, are used to measure the same...Write the expression for the expression for the heat liberated when temperature of a substance...Given info: The length, width and the thickness of the raft is 3 m, 2 m and 30 cm respectively and...Chapter 5, Problem 53EChapter 5, Problem 55EChapter 5, Problem 87EChapter 6, Problem 1MCChapter 6, Problem 4MCChapter 6, Problem 6MCChapter 6, Problem 16EChapter 6, Problem 17EAmplitude is the distance from the central line of crest of one wave to central line of crest of...Chapter 7, Problem 72EErnest Rutherford proposed the Rutherford’s model of atom. An atom has electrons, neutrons and...The gravitational force between two protons in a nucleus is too weak in comparison with the...Given Info: When a photon of sufficient energy incident on a metal surface, its energy is...Given Info: The mass of earth is 6×1024 kg , orbital speed is 3×104 m/s and value of h is...All matter in the universe is made up of atoms. Compounds can be broken down into simpler substance...The given equation is, Ca + [?]H2O → Ca(OH)2 + H2 To find the missing number in the above equation,...The given equation is, 4NH3 + 3O2 → 2N2 + [?]H2O To find the missing number in the above equation,...Solid is one of the physical state of matter. Solid consists of atoms, ions, or molecules that are...Combustion is burning of anything. This is a process which takes place in presence of oxygen. Oxygen...Mole of any elements is defined as “The amount of the element whose, mass in grams is equal to the...All matter in the universe is made up of atoms. Organic chemistry is a part of science that deals...Chapter 14, Problem 1MCChapter 15, Problem 1MCChapter 16, Problem 1MCChapter 17, Problem 1MCIt is possible to use both mirrors and telescope lens in order to observe the objects in the...Stars are present in galaxies. The spaces between galaxies are mostly empty space. These stars are...
More Editions of This Book
Corresponding editions of this textbook are also available below:
The Physical Universe
10th Edition
ISBN: 9780072428353
PHYSICAL UNIVERSE
17th Edition
ISBN: 9781260150520
Connect Access Card For The Physical Universe
17th Edition
ISBN: 9781260466065
PHYSICAL UNIVERSE >CUSTOM<
17th Edition
ISBN: 9781307456707
PHYSICAL UNIVERSE (LOOSELEAF)-W/CONNECT
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ISBN: 9781260699289
EP PHYSICAL UNIVERSE-CONNECTPLUS
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PHYSICAL UNIVERSE-CONNECTPLUS
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PHYSICAL UNIVERSE (LOOSELEAF)
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ISBN: 9781260466096
The Physical Universe
17th Edition
ISBN: 9781260466133
Physical Universe
15th Edition
ISBN: 9780077510534
PHYSICAL UNIVERSE W/ CONNECT
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ISBN: 9781308534718
PHYSICAL UNIVERSE-CONNECTPLUS
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ISBN: 9780077510503
EBK PHYSICAL UNIVERSE
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ISBN: 9780100255036
The Physical Universe
15th Edition
ISBN: 9780073513928
The Physical Universe
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ISBN: 9780073512167
The Physical Universe: Instructor's Manual/test Bank
7th Edition
ISBN: 9780070358638
Physical Universe-w/study Guide
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ISBN: 9780073558356
The Physical Universe
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The Physical Universe
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Loose Leaf Version For The Physical Universe
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The Physical Universe
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The Physical Universe
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Book Title
16th Edition
ISBN: 9781307302523
Study Guide For The Physical Universe
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PHYSICAL UNIVERSE(LL)-W/ACCESS >CUSTOM<
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ISBN: 9781259974755
Connect Access Card for The Physical Universe
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ISBN: 9781259663888
Physical Universe
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Physical Universe
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ISBN: 9781259664991
The Physical Universe:
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Package: Loose Leaf The Physical Universe With Connect Access Card
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ISBN: 9781259732188
Loose Leaf For The Physical Universe
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THE PHYSICAL UNIVERSE 18TH (LL)
18th Edition
ISBN: 9781266673887
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