Knowledge batch
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مشترکین
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آرشیو پست ها
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3. .......is the process of rationally analysis and attempt to solve a problem accurately and efficiency.
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Conflict resolution
@elfordanson
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2. ......is the art of addressing those difference and finding common ground that enable everyone to work together peacefully.
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collaboration
@STRONGER39
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1. .............. means working together with one or more people to complete a project or task or develop ideas or processes.
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👐ሰላም ሰዎች እንዴት ናችሁ 😍የ 9ኛ ክፍል ተማሪ ከሆኑ እንደ ኢትዮጵያ የ 9 ኛ ክፍል worksheet, question & note እንዲሁም ትምህርታዊ መረጃዎች ሚለቀቁበትን ቻናል ጆይን በሉ ፣ ጆይን ለማለት ከታች ያለውን በተን ይንኩ 👇👇👇👇
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Temperature is a physical quantity that expresses the hotness or coldness of an object or substance. It is a fundamental concept in physics and is related to the energy of the particles in a system. Temperature is a scalar quantity, meaning it has magnitude but no direction. It is commonly used to describe the state of matter, such as solid, liquid, or gas, and plays a crucial role in various physical and chemical processes. Temperature can be measured using various instruments, such as thermometers, and is an essential parameter in many scientific disciplines, including thermodynamics, meteorology, and chemistry.
@knowledgebach8
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Multiple Choice Questions on set theory
1. Which of the following is the universal set for the following sets: A = {1, 3, 5}, B = {2, 4, 6}, and C = {1, 2, 3}?
(A) {1, 2, 3, 4, 5, 6}
(B) {1, 3, 5}
(C) {2, 4, 6}
(D) {1, 2, 3, 4, 5, 6, 7, 8, 9, ...}
2. What is the intersection of the sets A = {x | x is an even number} and B = {x | x is a multiple of 3}?
(A) {0}
(B) {2, 4, 6, ...}
(C) {3, 6, 9, ...}
(D) {0, 2, 4, 6, ...}
3. What is the union of the sets A = {x | x is a prime number} and B = {x | x is a composite number}?
(A) {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ...}
(B) {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ...}
(C) {0, 2, 3, 4, 5, 6, 7, 8, 9, 10, ...}
(D) {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ...}
4. What is the complement of the set A = {x | x is a vowel}?
(A) {a, e, i, o, u}
(B) {b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y, z}
(C) {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
(D) { }
5. Which of the following sets is a power set?
(A) {1, 2, 3}
(B) {{1}, {2}, {3}}
(C) {{1, 2}, {2, 3}, {1, 3}}
(D) {{1, 2, 3}, {1, 2}, {2, 3}, {1, 3}, {1}, {2}, {3}}
6. What is the cardinality of the set A = {x | x is a natural number less than 10}?
(A) 0
(B) 9
(C) 10
(D) Infinite
7. Which of the following sets is countable?
(A) The set of all real numbers
(B) The set of all rational numbers
(C) The set of all irrational numbers
(D) The set of all functions from the set of natural numbers to the set of real numbers
8. Which of the following sets is uncountable?
(A) The set of all integers
(B) The set of all prime numbers
(C) The set of all algebraic numbers
(D) The set of all transcendental numbers
9. What is the Cartesian product of the sets A = {1, 2} and B = {a, b}?
(A) {(1, a), (1, b), (2, a), (2, b)}
(B) {{1, a}, {1, b}, {2, a}, {2, b}}
(C) {{{1}, {a}}, {{1}, {b}}, {{2}, {a}}, {{2}, {b}}}
(D) {{{1, a}}, {{1, b}}, {{2, a}}, {{2, b}}}
10. What is the relation between the sets A = {1, 2, 3} and B = {2, 3, 4}?
(A) A is a subset of B
(B) B is a subset of A
(C) A and B are equal sets
(D) A and B are disjoint sets
Answer Key:
1. A
2. A
3. B
4. B
5. D
6. B
7. B
8. D
9. A
10. A check answers
@ knowledgebach9
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Chemistry
Ionic bonding is a type of chemical bonding that occurs between ions with opposite charges. It involves the transfer of electrons from one atom to another, resulting in the formation of a bond between the two atoms.
In an ionic bond, one atom loses electrons to become a positively charged ion (cation), while the other atom gains those electrons to become a negatively charged ion (anion). The attraction between the oppositely charged ions then holds them together in a stable bond.
Ionic bonding typically occurs between metals and nonmetals, as metals tend to lose electrons and nonmetals tend to gain electrons. This type of bonding results in the formation of ionic compounds, which have a crystal lattice structure and are often solid at room temperature.
Some examples of ionic compounds include sodium chloride (NaCl), calcium carbonate (CaCO3), and magnesium oxide (MgO). These compounds have high melting and boiling points and are generally soluble in water. They also conduct electricity when dissolved in water or melted, but not in their solid state.
@knowledgebach9
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True
@Betty_love19
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False
@Betty_love19
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7. Tuberculosis is example of non infectious disease caused by the bacterium called Mycobactrium tuberculosis.
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Enhancing
@worker4424
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6. Some drugs are banned both in and out of compition due to their performance...............properties.
