Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Textbook Question
Chapter 6, Problem 7PC
Calculate the number of joules of kinetic energy a1-kg parrot has when it flies at 6m/s .
Expert Solution & Answer
To determine
The kinetic energy.
Answer to Problem 7PC
The kinetic energy is 18J .
Explanation of Solution
Given info: The mass of the parrot is 1kg and the velocity is 6m/s .
Write the expression for the kinetic energy.
Here,
m is the mass
v is the velocity
Substitute 1kg for m and 6m/s for v in the above equation to get K .
Conclusion:
Therefore, the kinetic energy is 18J .
Chapter 6 Solutions
Conceptual Physical Science Explorations
Ch. 6 - A force sets an object in motion. When the force...Ch. 6 - Cite an example where a force is exerted on an...Ch. 6 - Which requires more work-lifting a 50-kg sack a...Ch. 6 - If both sacks in the preceding question are lifted...Ch. 6 - What are the two main forms of mechanical energy?Ch. 6 - Exactly what is it that a body having energy is...Ch. 6 - A car is lifted a certain distance in a service...Ch. 6 - Two cars are lifted to the same elevation in...Ch. 6 - How many joules of potential energy does a 1-N...Ch. 6 - A moving car hovas kinetic energy. If it speeds up...
Ch. 6 - Compared to some original speed, how much work...Ch. 6 - What will be the kinetic energy of a pile driver...Ch. 6 - Can a machine multiply input force Input distance...Ch. 6 - If a machine multiplies force by a factor of 4,...Ch. 6 - If the man in Figure 6.22 pulls of rope downward...Ch. 6 - What is the efficiency of a machine that...Ch. 6 - Is a machine that has efficiency greater than 100...Ch. 6 - Prob. 18RQCh. 6 - What is the source of geothermal energy?Ch. 6 - The energy we require fro existence comes from the...Ch. 6 - Calculate the work done when force of 2 N moves a...Ch. 6 - calculate the work done when a 15-N force pushes a...Ch. 6 - Calculate the watts of power expended when a force...Ch. 6 - Calculate the power expended when a 20 N force...Ch. 6 - How many joules of potential energy does a 1.5kg...Ch. 6 - Calculate the increase in potential energy when a...Ch. 6 - Calculate the number of joules of kinetic energy...Ch. 6 - Calculate the kinetic energy of a 3-kg dog that...Ch. 6 - How much work is required to increase the kinetic...Ch. 6 - What change in kinetic energy does a model...Ch. 6 - The mass and speed of three vehicles is shown...Ch. 6 - Prob. 2TCCh. 6 - The roller coaster starts from rest at point A,...Ch. 6 - Consider the efficiency of these four machines:...Ch. 6 - When the mass of a moving object is doubled with...Ch. 6 - When the velocity of an object is doubled, by what...Ch. 6 - Consider a ball thrown straight up in the air. At...Ch. 6 - At what point in its motion is the KE of a...Ch. 6 - A physical science teacher demonstrates energy...Ch. 6 - Discuss the design of the roller coaster shown in...Ch. 6 - Suppose that you and two classmates are discussing...Ch. 6 - Consider a mouse and dog running along a road have...Ch. 6 - Consider molecules of hydrogen (tiny ones) and...Ch. 6 - According to the work-energy theorem, in the...Ch. 6 - When a driver applies brake to keep a car going...Ch. 6 - On a slide a child has potential energy that...Ch. 6 - Consider the identical balls released from rest on...Ch. 6 - You tell your friend that no machine can possibly...Ch. 6 - Two lumps of clay with equal and opposite momenta...Ch. 6 - An automobile engine runs on compressed air. This...Ch. 6 - Consider the swinging-balls apparatus. If two...Ch. 6 - Does a high-efficiency machine degrade a...Ch. 6 - If an automobile had a 100% efficient engine,...Ch. 6 - A friend says that the energy of the oil and coal...Ch. 6 - How many joules of work are done when a force of...Ch. 6 - ( a ) How much work is done when you push a crate...Ch. 6 - This question is typical on some drivers license...Ch. 6 - A force of 50N is applied to the end of a lever,...Ch. 6 - Consider an ideal pulley system. If you pull one...Ch. 6 - How many watts of power expanded when a force of...Ch. 6 - How much work is done on a 100-kg crate that is...Ch. 6 - How much power is required to raise a 100-kg crate...Ch. 6 - Raising an auto in a service station increases its...Ch. 6 - A model airplane moves three times as fast as...Ch. 6 - Which of the following equations is most useful...Ch. 6 - A shiny sports car at the top of a vertical cliff...Ch. 6 - When a hybrid car brakes to a stop, much of its...Ch. 6 - In an ideal pulley system, a woman lifts a...Ch. 6 - When 100J are put into a device that puts out 40J,...Ch. 6 - A machine cannot multiply (a) forces (b)...
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