Conceptual Integrated Science
3rd Edition
ISBN: 9780135197394
Author: Hewitt, Paul G., LYONS, Suzanne, (science Teacher), Suchocki, John, Yeh, Jennifer (jennifer Jean)
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 4, Problem 83TE
Which requires more work: stretching a strong spring a certain distance or stretching a weak spring the same distance? Defend your answer.
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Students have asked these similar questions
SARET CRKS AUTOWAY
12. A stone is dropped from the top of a cliff. It is seen to hit the ground below
after 3.55 s. How high is the cliff?
13. A ball is dropped from rest at the top of a building that is 320 m tall. Assuming
no air resistance, what is the speed of the ball just before it strikes the ground?
14. Estimate (a) how long it took King Kong to fall straight down from the top
of the Empire State Building (280m high), and (b) his velocity just before
"landing".
Useful equations
For Constant Velocity:
V =>
D
X = V₁t + Xo
For Constant Acceleration:
Vr = V + at
X = Xo+Vot +
v=V+2a(X-Xo)
\prom = V +V
V velocity
t = time
D Distance
X = Final Position
Xo Initial Position
V = Final Velocity
Vo Initial Velocity
a = acceleration
For free fall
Yf
= Final Position
Yo Initial Position
g = 9.80
m
$2
For free fall:
V = V + gt
Y=Yo+Vo t +
+gt
V,² = V₁²+2g (Y-Yo)
V+Vo
Vprom=
2
6
Solve the problems
A 11 kg weight is attached to a spring with constant k = 99 N/m and subjected to an external force
F(t) =-704 sin(5t). The weight is initially displaced 4 meters above equilibrium and given an
upward velocity of 5 m/s. Find its displacement for t> 0.
y(t)
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Chapter 4 Solutions
Conceptual Integrated Science
Ch. 4 - Which has a greater momentum-a heavy truck at rest...Ch. 4 - How can a huge ship have an enormous momentum when...Ch. 4 - How does impulse differ from force?Ch. 4 - What are the two ways in which the impulse exerted...Ch. 4 - For the same force, which cannon imparts the...Ch. 4 - Consider a baseball that is caught and thrown at...Ch. 4 - In the preceding question, which case requires the...Ch. 4 - Can you produce a net impulse on an automobile by...Ch. 4 - What does it mean to say that a quantity is...Ch. 4 - Distinguish between an elastic collision and an...
Ch. 4 - Railroad car A rolls at a certain speed and...Ch. 4 - If the equally massive cars of the preceding...Ch. 4 - When is energy most evident?Ch. 4 - What do we call the quantity force distance, and...Ch. 4 - In what units are work and energy measured?Ch. 4 - True or false: One watt is the unit of power...Ch. 4 - How many watts of power are expended when a force...Ch. 4 - A car is lifted a certain distance in a service...Ch. 4 - Two cars, one twice as heavy as the other, are...Ch. 4 - When a car travels at 50 km/h, it has kinetic...Ch. 4 - What is the evidence for saying whether or not...Ch. 4 - The brakes do a certain amount of work to stop a...Ch. 4 - Cite the law of energy conservation.Ch. 4 - What is the source of energy that powers a...Ch. 4 - Can a machine multiply input force? Input...Ch. 4 - A force of 50 N applied to the end of a lever...Ch. 4 - Is it possible to design a machine that has an...Ch. 4 - a Why is it a good idea to have your hand extended...Ch. 4 - In Figure 4.8, how does the force that Cassy...Ch. 4 - How will the impulse differ if Cassys hand bounces...Ch. 4 - We know that falling on a mat is preferable to...Ch. 4 - In terms of the impulse-momentum relationship,...Ch. 4 - The word burn is often used to describe the...Ch. 4 - In what sense are you powered by solar energy?Ch. 4 - Calculate the momentum of a 10-kg bowling ball...Ch. 4 - Show that the momentum of a 50-kg carton that...Ch. 4 - Calculate the impulse that occurs when an average...Ch. 4 - Show that an impulse of 100 Ns occurs when the...Ch. 4 - Calculate the work done when a force of 2 N moves...Ch. 4 - Show that 45 J of work is done when a 15-N force...Ch. 4 - Calculate the watts of power expended when a force...Ch. 4 - Show that 140 W of power is expended when a 20-N...Ch. 4 - How much PE does a 1.5 kg book gain when lifted 2...Ch. 4 - Show that there is a 600-J increase in potential...Ch. 4 - Calculate the KE of a 1-kg parrot flying at 6 m/s.Ch. 4 - Show that the KE of a 3-kg dog running at 4 m/s is...Ch. 4 - How much work is required to increase the kinetic...Ch. 4 - Show that a 50-J change in kinetic energy occurs...Ch. 4 - The mass and speed of three vehicles, A, B and C,...Ch. 4 - The roller coaster stats from rest at point A....Ch. 4 - Rank the scale readings from greatest to least...Ch. 4 - A car with a mass of 1000kgmoves at 20m/s. Show...Ch. 4 - A railroad diesel engine weighs four times as much...Ch. 4 - A 5kg fish swimming at 1m/s swallows an absent...Ch. 4 - What would be the speed of the larger fish if the...Ch. 4 - Jeannie Beanie mass 40kg, standing on a slippery...Ch. 4 - Consider the inelastic collision between the two...Ch. 4 - This question is typical on some drivers licence...Ch. 4 - In the hydraulic machine shown, it is observed...Ch. 4 - Consider a car with 25% efficient engine that and...Ch. 4 - When a cyclist expends 1000W of power to deliver...Ch. 4 - The decrease in PE of a freely falling object...Ch. 4 - A Mars vehicle is tested on Earth at a speed of...Ch. 4 - How can the momentum of a speeding bullet be the...Ch. 4 - Distinguish between force and impulse. .Ch. 4 - What are the two ways to increase or decrease...Ch. 4 - Why are automobiles designed to crumple upon...Ch. 4 - Why might a glass wine survive a fall onto a...Ch. 4 - If you throw an egg against a wall, the egg will...Ch. 4 - Railroad cars are loosely coupled so that there is...Ch. 4 - When a cannon with a long barrel is fired, the...Ch. 4 - Why does Howies block Figure 4.3 topple when the...Ch. 4 - You are on small raft next to a dock, and you jump...Ch. 4 - When travelling in your car at highway speed, the...Ch. 4 - Freddy Frog drops vertically from a tree onto a...Ch. 4 - Prob. 81TECh. 4 - Can something have energy without having momentum?...Ch. 4 - Which requires more work: stretching a strong...Ch. 4 - Why do you run out of breath when running up the...Ch. 4 - Distinguish between work and power.Ch. 4 - Relative to the floor in a library, books on the...Ch. 4 - If 300 joules is required to lift an object to a...Ch. 4 - When the velocity of an object is doubled, by what...Ch. 4 - You and a flight attended tosses a ball back and...Ch. 4 - A child can throw a baseball at 20 mph. Some...Ch. 4 - Prob. 91TECh. 4 - When a cannon with a long barrel is fired, the...Ch. 4 - Consider a pendulum swinging to and fro. At what...Ch. 4 - A physics instructor demonstrates energy...Ch. 4 - An apple hanging from a limb has potential energy...Ch. 4 - In an effort to combat wasteful habits, we often...Ch. 4 - Why bother using a machine if it cannot multiply...Ch. 4 - In the ideal pulley system shown, Block A has mass...Ch. 4 - Why is a punch more powerful with a bare fist than...Ch. 4 - A boxer can punch a heavy bag for more than an...Ch. 4 - A fully dressed person is at rest in the middle of...Ch. 4 - Why is it difficult for a firefighter to hold a...Ch. 4 - If a Mack truck and Honda Civic have a head-on...Ch. 4 - If an automobile has an engine that was 100%...Ch. 4 - Discuss the design of the roller coaster shown in...Ch. 4 - Consider the identical balls released from rest on...Ch. 4 - Consider the swinging balls apparatus shown. If...Ch. 4 - A freight train rolls along a track with...Ch. 4 - If Fast Freda doubles her running speed, she also...Ch. 4 - A big fish swims upon and swallows a small fish at...Ch. 4 - Which of these equations best illustrates the...Ch. 4 - Which of these equations is best for calculating...Ch. 4 - The power required to raise a 100-kg crate a...Ch. 4 - A model car with three times as much speed as...Ch. 4 - Nellie lifts a 100-N crate with an ideal pulley...Ch. 4 - When 100 J are put into a device that puts out 40...Ch. 4 - A simple machine CANNOT multiply a force. b...
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