Conceptual Phy. Sci. - With Access (Custom)
6th Edition
ISBN: 9781323406588
Author: Hewitt
Publisher: PEARSON
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Chapter 21, Problem 91E
Are the present-day ocean basins a permanent feature on our planet? Discuss why or why not.
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A 1.40-kg object slides to the right on a surface having a coefficient of kinetic friction 0.250 (Figure a). The object has a speed of v₁ = 3.50 m/s when it makes contact with a light spring (Figure b) that has a force constant of 50.0 N/m. The object comes to rest after the spring has been
compressed a distance d (Figure c). The object is then forced toward the left by the spring (Figure d) and continues to move in that direction beyond the spring's unstretched position. Finally, the object comes to rest a distance D to the left of the unstretched spring (Figure e).
d
m
v=0
-D- www
(a) Find the distance of compression d (in m).
m
(b) Find the speed v (in m/s) at the unstretched position when the object is moving to the left (Figure d).
m/s
(c) Find the distance D (in m) where the object comes to rest.
m
(d) What If? If the object becomes attached securely to the end of the spring when it makes contact, what is the new value of the distance D (in m) at which the object will come to…
As shown in the figure, a 0.580 kg object is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x. The force constant of the spring is 450 N/m. When it is released, the object travels along a frictionless, horizontal surface to point A, the bottom of a
vertical circular track of radius R = 1.00 m, and continues to move up the track. The speed of the object at the bottom of the track is VA = 13.0 m/s, and the object experiences an average frictional force of 7.00 N while sliding up the track.
R
(a) What is x?
m
A
(b) If the object were to reach the top of the track, what would be its speed (in m/s) at that point?
m/s
(c) Does the object actually reach the top of the track, or does it fall off before reaching the top?
O reaches the top of the track
O falls off before reaching the top
○ not enough information to tell
A block of mass 1.4 kg is attached to a horizontal spring that has a force constant 900 N/m as shown in the figure below. The spring is compressed 2.0 cm and is then released from rest.
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a
F
x = 0
0
b
i
(a) A constant friction force of 4.4 N retards the block's motion from the moment it is released. Using an energy approach, find the position x of the block at which its speed is a maximum.
ст
(b) Explore the effect of an increased friction force of 13.0 N. At what position of the block does its maximum speed occur in this situation?
cm
Chapter 21 Solutions
Conceptual Phy. Sci. - With Access (Custom)
Ch. 21 - How do P-waves travel through Earths interior? How...Ch. 21 - Can S-waves travel through liquids?.Ch. 21 - Prob. 3RCQCh. 21 - What was the major contribution of Andrija...Ch. 21 - How did seismic waves contribute to the discovery...Ch. 21 - What is the evidence that Earths inner core is...Ch. 21 - What is the evidence that Earths outer core is...Ch. 21 - In what ways are the asthenosphere and the...Ch. 21 - How does continental crust differ from oceanic...Ch. 21 - Why does continental crust stand higher on the...
Ch. 21 - Prob. 11RCQCh. 21 - Prob. 12RCQCh. 21 - Prob. 13RCQCh. 21 - Where are the deepest parts of the ocean?Ch. 21 - Prob. 15RCQCh. 21 - How is the ocean floor similar to a gigantic,...Ch. 21 - Prob. 17RCQCh. 21 - Name and describe the three types of plate...Ch. 21 - The lithosphere moves because of convection...Ch. 21 - What is a rift? Give an example.Ch. 21 - Prob. 21RCQCh. 21 - Prob. 22RCQCh. 21 - What is a transform boundary?Ch. 21 - Are folded rocks primarily the result of...Ch. 21 - Distinguish between anticlines and synclines.Ch. 21 - What is the difference between reverse faults and...Ch. 21 - Prob. 27RCQCh. 21 - What happens to rock when stress exceeds a rocks...Ch. 21 - Where are most of the worlds volcanoes formed?Ch. 21 - Prob. 30RCQCh. 21 - Prob. 34TASCh. 21 - Prob. 35TASCh. 21 - The Richter magnitude scale is logarithmic,...Ch. 21 - If the rate of movement along a fault is known,...Ch. 21 - The San Andreas Fault separates the...Ch. 21 - Prob. 39TARCh. 21 - Prob. 40TARCh. 21 - Prob. 41TARCh. 21 - Prob. 42TARCh. 21 - Prob. 43TARCh. 21 - Prob. 44ECh. 21 - How can seismic waves indicate whether regions...Ch. 21 - How do seismic waves indicate layering of...Ch. 21 - What does the P-wave shadow tell us about Earth's...Ch. 21 - What is the evidence that Earth's inner core is...Ch. 21 - Even though the inner and outer cores are both...Ch. 21 - If Earth's mantle is composed of rock, how can we...Ch. 21 - Prob. 51ECh. 21 - Prob. 52ECh. 21 - Prob. 53ECh. 21 - Prob. 54ECh. 21 - Prob. 55ECh. 21 - Where and what is the most likely source of the...Ch. 21 - Prob. 57ECh. 21 - Prob. 58ECh. 21 - How is Earth's crust like a conveyor belt?Ch. 21 - Upon crystallization, certain minerals (the most...Ch. 21 - What is meant by magnetic pole reversals? What...Ch. 21 - How are the theories of seafloor spreading and...Ch. 21 - Prob. 63ECh. 21 - Distinguish between continental drift and plate...Ch. 21 - Why are the most ancient rocks found on the...Ch. 21 - What kinds of plate boundaries are associated with...Ch. 21 - Prob. 67ECh. 21 - At what type of plate boundary were the...Ch. 21 - Prob. 69ECh. 21 - Prob. 71ECh. 21 - Magma is generated at divergent and convergent...Ch. 21 - Prob. 73ECh. 21 - Prob. 74ECh. 21 - Prob. 75ECh. 21 - Lithospheric rock is continuously created and...Ch. 21 - Subduction is the process of one lithospheric...Ch. 21 - Where does most of an earthquakes damage generally...Ch. 21 - What type of fault is associated with the 1964...Ch. 21 - The Mercalli scale measures earthquake intensity....Ch. 21 - How do faults and folds support the idea that...Ch. 21 - Why are most earthquakes generated near plate...Ch. 21 - Prob. 83ECh. 21 - Prob. 84ECh. 21 - What is the direct source of energy responsible...Ch. 21 - Prob. 86ECh. 21 - Prob. 87ECh. 21 - Strike-slip faults show horizontal motion. Where...Ch. 21 - If you found folded beds of sedimentary rock in...Ch. 21 - In an earthquake, does the release of energy...Ch. 21 - Are the present-day ocean basins a permanent...Ch. 21 - Are the present-day continents a permanent feature...Ch. 21 - Prob. 93ECh. 21 - Prob. 94ECh. 21 - During an earthquake, what type of land surface is...Ch. 21 - Prob. 96DQCh. 21 - As global temperatures increase, the polar ice...Ch. 21 - The FYI about the 2010 Chilean earthquake suggests...Ch. 21 - What clues can we use to recognize the boundaries...Ch. 21 - At divergent boundaries, basaltic magma is...Ch. 21 - The hypothesis of continental drift is not...Ch. 21 - Prob. 3RATCh. 21 - Prob. 4RATCh. 21 - Prob. 5RATCh. 21 - Earthquakes are caused by the (a) friction between...Ch. 21 - Seafloor spreading provided a driving force for...Ch. 21 - Prob. 8RATCh. 21 - Prob. 9RATCh. 21 - Rocks buckle and fold when subjected to (a)...
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- You have a new internship, where you are helping to design a new freight yard for the train station in your city. There will be a number of dead-end sidings where single cars can be stored until they are needed. To keep the cars from running off the tracks at the end of the siding, you have designed a combination of two coiled springs as illustrated in the figure below. When a car moves to the right in the figure and strikes the springs, they exert a force to the left on the car to slow it down. Total force (N) 2000 1500 1000 500 Distance (cm) 10 20 30 40 50 60 i Both springs are described by Hooke's law and have spring constants k₁ = 1,900 N/m and k₂ = 2,700 N/m. After the first spring compresses by a distance of d = 30.0 cm, the second spring acts with the first to increase the force to the left on the car in the figure. When the spring with spring constant k₂ compresses by 50.0 cm, the coils of both springs are pressed together, so that the springs can no longer compress. A typical…arrow_forwardA spring is attached to an inclined plane as shown in the figure. A block of mass m = 2.71 kg is placed on the incline at a distance d = 0.285 m along the incline from the end of the spring. The block is given a quick shove and moves down the incline with an initial speed v = incline angle is 0 = 20.0°, the spring constant is k = 505 N/m, and we can assume the surface is frictionless. By what distance (in m) is the spring compressed when the block momentarily comes to rest? m k www m 0.750 m/s. Thearrow_forwardA block of mass m = 2.50 kg situated on an incline at an angle of k=100 N/m www Ө m = 50.0° is connected to a spring of negligible mass having a spring constant of 100 N/m (Fig. P8.54). The pulley and incline are frictionless. The block is released from rest with the spring initially unstretched. (a) How far does it move down the frictionless incline before coming to rest? m (b) What is its acceleration at its lowest point? Magnitude m/s2 Direction O up the incline down the inclinearrow_forward
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