Pearson eText Conceptual Physical Science -- Instant Access (Pearson+)
6th Edition
ISBN: 9780134857107
Author: Paul Hewitt, John Suchocki
Publisher: PEARSON+
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Chapter 20, Problem 4RCQ
To determine
To determine: The most abundant element in Earth’s crust and also, the second most abundant element.
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A positively charged disk has a uniform charge per unit area σ.
dq
R
P
x
The total electric field at P is given by the following.
Ek [2 -
x
(R² + x2) 1/2
Sketch the electric field lines in a plane perpendicular to the plane of the disk passing through its center.
Consider a closed triangular box resting within a horizontal electric field of magnitude E = 8.02 104 N/C as shown in the figure below.
A closed right triangular box with its vertical side on the left and downward slope on the right rests within a horizontal electric field vector E that points from left to right. The box has a height of 10.0 cm and a depth of 30.0 cm. The downward slope of the box makes an angle of 60 degrees with the vertical.
(a) Calculate the electric flux through the vertical rectangular surface of the box. kN · m2/C(b) Calculate the electric flux through the slanted surface of the box. kN · m2/C(c) Calculate the electric flux through the entire surface of the box. kN · m2/C
The figure below shows, at left, a solid disk of radius R = 0.600 m and mass 75.0 kg.
Tu
Mounted directly to it and coaxial with it is a pulley with a much smaller mass and a radius of r = 0.230 m. The disk and pulley assembly are on a frictionless axle. A belt is wrapped around the pulley and connected to an electric motor as shown on the right. The turning motor gives the disk
and pulley a clockwise angular acceleration of 1.67 rad/s². The tension T in the upper (taut) segment of the belt is 145 N.
(a) What is the tension (in N) in the lower (slack) segment of the belt?
N
(b) What If? You replace the belt with a different one (one slightly longer and looser, but still tight enough that it does not sag). You again turn on the motor so that the disk accelerates clockwise. The upper segment of the belt once again has a tension of 145 N, but now the tension in
the lower belt is exactly zero. What is the magnitude of the angular acceleration (in rad/s²)?
rad/s²
Chapter 20 Solutions
Pearson eText Conceptual Physical Science -- Instant Access (Pearson+)
Ch. 20 - How did density segregation contribute to Earth's...Ch. 20 - What three sources of heat contributed to the...Ch. 20 - What is the most abundant element for Earth as a...Ch. 20 - Prob. 4RCQCh. 20 - What is a mineral?Ch. 20 - What does inorganic in the definition of mineral?Ch. 20 - What physical properties are used to identify...Ch. 20 - Most mineral samples do not display their crystal...Ch. 20 - What is a polymorph?Ch. 20 - What is the difference between a silicate mineral...
Ch. 20 - Silicate minerals are subdivided into...Ch. 20 - What is the most abundant mineral in Earth's...Ch. 20 - Prob. 13RCQCh. 20 - What are two sources from which minerals...Ch. 20 - As minerals crystallize in cooling magma, which...Ch. 20 - When water evaporates from a body of water, what...Ch. 20 - Name the three major types of rocks and describe...Ch. 20 - What are the most common igneous rocks, and where...Ch. 20 - What is meant by partial melting?Ch. 20 - With respect to the silica content of the parent...Ch. 20 - What is the primary determining factor for a...Ch. 20 - In Earths interior, does temperature or decrease...Ch. 20 - Prob. 23RCQCh. 20 - What is a clastic sedimentary rock?Ch. 20 - What are the three most common clastic sedimentary...Ch. 20 - What is the most abundant carbonate rock?Ch. 20 - How are most carbonate rocks formed?Ch. 20 - What is metamorphism? What causes it?Ch. 20 - Distinguish between foliated and nonfoliated...Ch. 20 - In contact metamorphism, water-rich, low-melting...Ch. 20 - Gold has a density of 19.3 g/cm3. A 5-gal pail of...Ch. 20 - Prob. 37TASCh. 20 - Other than location, what is the primary...Ch. 20 - What do we call minerals that have the same...Ch. 20 - The factors that influence bond strength influence...Ch. 20 - Why is color not always the best way to identify a...Ch. 20 - While you are hiking in the wilderness, you find a...Ch. 20 - What makes gold so soft (easily scratched) while...Ch. 20 - Imagine that we have a liquid with a density of...Ch. 20 - Is cleavage the same thing as crystal form? Why or...Ch. 20 - For identifying metallic minerals, why is streak...Ch. 20 - How are minerals classified?Ch. 20 - Silicon is essential for the computer industry in...Ch. 20 - What two minerals make up most of the sand in the...Ch. 20 - What two mineral groups provide most of the ore...Ch. 20 - How are ferromagnesian silicates different from...Ch. 20 - What is an ore?Ch. 20 - If a rock contains mineral A (30% silica) and...Ch. 20 - If a rock contains mineral A (30% silica) and...Ch. 20 - If a magma contains molten forms of mineral A (30%...Ch. 20 - If a magma contains molten forms of mineral A (30%...Ch. 20 - If high-silica minerals are the last to...Ch. 20 - Which of these is a true statement about silicate...Ch. 20 - If a magma contains molten forms of quartz and...Ch. 20 - Are high-silica content minerals "easier" to melt...Ch. 20 - Prob. 71ECh. 20 - If a rock contains both quartz and pyroxene (a...Ch. 20 - Why is halite commonly the last mineral to...Ch. 20 - Is Earth's interior mostly magma? Explain.Ch. 20 - In which parts of Earth's crust (oceanic and/or...Ch. 20 - Are the Hawaiian Islands made up primarily of...Ch. 20 - Why does magma composition change as it cools?Ch. 20 - Is it possible for crystallization to enrich magma...Ch. 20 - Where does most magma originate?Ch. 20 - Prob. 80ECh. 20 - Prob. 81ECh. 20 - How do chemical sediments produce rock? Name two...Ch. 20 - Relate the shape and sorting of sand particles to...Ch. 20 - What general rock feature does a geologist look...Ch. 20 - What feature of clastic sedimentary rock enables...Ch. 20 - Prob. 86ECh. 20 - In what two ways does sediment turn into...Ch. 20 - In a conglomerate rock, why are pebbles of granite...Ch. 20 - Cite two examples of sedimentary rocks that...Ch. 20 - Prob. 90ECh. 20 - Prob. 91ECh. 20 - Can metamorphic rocks exist on an island of purely...Ch. 20 - What patterns of alteration are characteristic of...Ch. 20 - What are the two processes by which rock is...Ch. 20 - What properties of slate make it good roofing...Ch. 20 - Name two mica minerals that can give a metamorphic...Ch. 20 - How is foliation different from sedimentary...Ch. 20 - Why do we find folded and fractured rock layers in...Ch. 20 - What feature helps distinguish schist and gneiss...Ch. 20 - How does gneiss differ from granite?Ch. 20 - Why is schist so easily recognized?Ch. 20 - Which type(s) of rock is (are) made from...Ch. 20 - Which type(s) of rock is (are) made from...Ch. 20 - What is the difference between the minerals that...Ch. 20 - If the volcanic glass obsidian is not considered a...Ch. 20 - We have learned that silica content is a key...Ch. 20 - Which type of rock is most sought by petroleum...Ch. 20 - Prob. 107DQCh. 20 - The silicates are the largest mineral group...Ch. 20 - Compaction and cementation of sediments leads to...Ch. 20 - Why are silicon and oxygen concentrated near...Ch. 20 - Which minerals crystallize first from cooling...Ch. 20 - Prob. 5RATCh. 20 - In a sedimentary rock, the degree of particle...Ch. 20 - The characteristics of regional metamorphism...Ch. 20 - Prob. 8RATCh. 20 - What most strongly influences a minerals hardness?...Ch. 20 - Prob. 10RAT
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