Enthalpy of Vaporization
The enthalpy of vaporization, (symbol ), also known as the heat of vaporization or heat of
evaporation, is the energy required to transform a given quantity of a substance from a liquid
into a gas at a given pressure (often atmospheric pressure).
It is often measured at the normal boiling point of a substance;...
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Enthalpy of Vaporization The enthalpy of vaporization, (symbol ), also known as the heat of vaporization or heat of evaporation, is the energy required to transform a given quantity of a substance from a liquid into a gas at a given pressure (often atmospheric pressure). It is often measured at the normal boiling point of a substance; although tabulated values are usually corrected to 298 K, the correction is often smaller than the uncertainty in the measured value. The heat of vaporization is temperature-dependent, though a constant heat of vaporization can be assumed for small temperature ranges and for Tr<<1. 0. The heat of vaporization diminishes with increasing temperature and it vanishes completely at the critical temperature (Tr=1) because above the critical temperature the liquid and vapor phases no longer co-exist. Physical model for vaporization :- A simple physical model for the liquid-gas phase transformation has been proposed recently. It is suggested that the energy
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Coulombs Law
Coulomb s law or Coulomb s inverse-square law is a law of physics describing the
electrostatic interaction between electrically charged particles.
It was first published in 1785 by
French physicist Charles Augustin de Coulomb and was essential to the development of the
theory of electromagnetism.
Coulomb s law has been...
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Coulombs Law Coulomb s law or Coulomb s inverse-square law is a law of physics describing the electrostatic interaction between electrically charged particles. It was first published in 1785 by French physicist Charles Augustin de Coulomb and was essential to the development of the theory of electromagnetism. Coulomb s law has been tested heavily and all observations are consistent with the law. Coulomb s law states that: "The magnitude of the Electrostatics force of interaction between two point charges is directly proportional to the scalar multiplication of the magnitudes of charges and inversely proportional to the square of the distances between them. " There are scalar and vector forms of the equation. The scalar expression assumes that the distance between the charges is large compared to the size of the charge, which means that the two charges in the scalar equation are point charges at any distance. In the more useful vector-form statement, the force in the equation is a
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Electromotive Force
Electromotive force, also called EMF, (denoted and measured in volts), refers to voltage
generated by a battery or by the magnetic force according to Faraday s Law, which states that
a time varying magnetic field will induce an electric current.
Electromotive "force" is not considered a force, as force is measured...
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Electromotive Force Electromotive force, also called EMF, (denoted and measured in volts), refers to voltage generated by a battery or by the magnetic force according to Faraday s Law, which states that a time varying magnetic field will induce an electric current. Electromotive "force" is not considered a force, as force is measured in newtons, but a potential, or energy per unit of charge, measured in volts. Formally, EMF is classified as the external work expended per unit of charge to produce an electric potential difference across two open-circuited terminals. By separating positive and negative charges, electric potential difference is produced, generating an electric field. The created electrical potential difference drives current flow if a circuit is attached to the source of emf. When current flows, however, the voltage across the terminals of the source of emf is no longer the open-circuit value, due to voltage drops inside the device due to its internal resistance. De
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Example of Independent Variable
Generally speaking, in any given model or equation, variables can be divided into two
categories:
1.
Independent variables are the variables that are changed in a given model or equation.
One can also think of them as the ‘input’ which is then modified by the model to change
the ‘output’ or...
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Example of Independent Variable Generally speaking, in any given model or equation, variables can be divided into two categories: 1. Independent variables are the variables that are changed in a given model or equation. One can also think of them as the ‘input’ which is then modified by the model to change the ‘output’ or dependent variable. 2. Dependent variables are considered to be functions of the independent variables, changing only as the independent variable does. Independent Variables (IV) & Dependent Variables (DV) In an experiment, the independent variable is the variable that is varied or manipulated by the researcher, and the dependent variable is the response that is measured. An independent variable is the presumed cause, whereas the dependent variable is the presumed effect. The IV is the antecedent, whereas the DV is the consequent. Example of Independent Variable Know More About :- Degrees of Polynomials Math. Tutorvista. com Page No. :- 1/4
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Linear Equations Examples
A linear equation in one variable has a single unknown quantity called a variable represented
by a letter.
Eg: ‘x’, where ‘x’ is always to the power of 1.
This means there is no ‘ x² ’ or ‘ x³ ’ in
the equation.
The process of finding out the variable value that makes the equation true is...
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Linear Equations Examples A linear equation in one variable has a single unknown quantity called a variable represented by a letter. Eg: ‘x’, where ‘x’ is always to the power of 1. This means there is no ‘ x² ’ or ‘ x³ ’ in the equation. The process of finding out the variable value that makes the equation true is called ‘solving’ the equation. An equation is a statement that two quantities are equivalent. For example, this linear equation: x + 1 = 4 means that when we add 1 to the unknown value, ‘x’, the answer is equal to 4. To solve linear equations, you add, subtract, multiply and divide both sides of the equation by numbers and variables, so that you end up with a single variable on one side and a single number on the other side. As long as you always do the same thing to BOTH sides of the equation, and do the operations in the correct order, you will get to the solution. Linear Equations Examples Know More About :- Examples of Polynomials Math. Tutorvista. com Page No. :
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What are Polynomials
A polynomial is a mathematical expression consisting of a sum of terms, each term including a
variable or variables raised to a power and multiplied by a coefficient.
The simplest
polynomials have one variable.
A one-variable (univariate) polynomial of degree n has the
following form:
anxn + an-1xn-1 + .
.
.
+...
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What are Polynomials A polynomial is a mathematical expression consisting of a sum of terms, each term including a variable or variables raised to a power and multiplied by a coefficient. The simplest polynomials have one variable. A one-variable (univariate) polynomial of degree n has the following form: anxn + an-1xn-1 + . . . + a2x2 + a1x1 + ax where the a s represent the coefficients and x represents the variable. Because x1 = x and x = 1 for all complex numbers x, the above expression can be simplified to: anxn + an-1xn-1 + . . . + a2x2 + a1x + a When an nth-degree univariate polynomial is equal to zero, the result is a univariate polynomial equation of degree n: anxn + an-1xn-1 + . . . + a2x2 + a1x + a = 0 There may be several different values of x, called roots, that satisfy a univariate polynomial What are Polynomials Know More About :- Perfect Square Trinomials Math. Tutorvista. com Page No. :- 1/4
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The Area of a Triangle
The area of a polygon is the number of square units inside that polygon.
Area is 2-dimensional
like a carpet or an area rug.
A triangle is a three-sided polygon.
We will look at several types
of triangles in this lesson.
To find the area of a triangle, multiply the base by the height, and then divide by 2....
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The Area of a Triangle The area of a polygon is the number of square units inside that polygon. Area is 2-dimensional like a carpet or an area rug. A triangle is a three-sided polygon. We will look at several types of triangles in this lesson. To find the area of a triangle, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the area of each triangle is equal to one-half the area of the parallelogram. Since the area of a parallelogram is , the area of a triangle must be one-half the area of a parallelogram. Thus, the formula for the area of a triangle is: or where is the base, is the height and · means multiply. The base and height of a triangle must be perpendicular to each other. In each of the examples below, the base is a side of the triangle. However, depending on the triangle, the height may or may not be a side of the triangle. For
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Area of the Triangle
Most common method
Usually called "half of base times height", the area of a triangle is given by the formula below.
Calculator
where
b is the length of the base
a is the length of the corresponding altitude
You can choose any side to be the base.
It need not be the one drawn at the bottom of the
triangle.
The...
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Area of the Triangle Most common method Usually called "half of base times height", the area of a triangle is given by the formula below. Calculator where b is the length of the base a is the length of the corresponding altitude You can choose any side to be the base. It need not be the one drawn at the bottom of the triangle. The altitude must be the one corresponding to the base you choose. The altitude is the line perpendicular to the selected base from the opposite vertex. In the figure above, one side has been chosen as the base and its corresponding altitude is shown. Any side can be a base, but every base has only one height. The height is the line from the opposite vertex and perpendicular to the base. In the picture above, the base CB has one and only one height. The illustration below shows how any leg of the triangle can be a base and the height always extends from the vertex of the opposite side and is perpendicular to the base Area of the Triangle Know More About
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List of Pythagorean Triples
After a break, it s back.
The last page of this section of my journal was a list of the primitive
triples of each of the three basic types, but I think I ve had enough of that.
So here s a handy
reference list for use in math class when creating problems for tests or classwork.
It lists all
the primitive...
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List of Pythagorean Triples After a break, it s back. The last page of this section of my journal was a list of the primitive triples of each of the three basic types, but I think I ve had enough of that. So here s a handy reference list for use in math class when creating problems for tests or classwork. It lists all the primitive and non-primitive Pythagorean triples, sorted by the shortest side, from 3 to 50. Leg Primitive Non-Primitive 3 3,4,5 -4 -- -5 5,12,13 -6 -- 6,8,10 7 7,24,25 -8 8,15,17 -9 9,40,41 9,12,15 10 -- 10,24,26 11 11,60,61 -12 12,35,37 12,16,20 13 13,84,85 -14 -- 14,48,50 List of Pythagorean Triples Know More About :- Pythagorean Triples Formula Math. Tutorvista. com Page No. :- 1/4
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Finding the Area of a Triangle
In geometry, we include the triangle as a most basic shape or figure of the mathematics.
Triangle can be consider as a most common and easy figure to understand for the students.
In the third and fourth grade’s books the topic of triangle are mostly commonly exists to study.
In the proper definition...
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Finding the Area of a Triangle In geometry, we include the triangle as a most basic shape or figure of the mathematics. Triangle can be consider as a most common and easy figure to understand for the students. In the third and fourth grade’s books the topic of triangle are mostly commonly exists to study. In the proper definition we can define the triangle as a geometrical shape that are enclosed with three straight lines and these straight lines are interconnected at the three points which is known as vertices and straight lines are known as edges. Due to interconnection of edges at the vertices point to each other triangle can be consider in the category of closed figure. The vertices of the triangle can be named by different alphabetic variables in between a to z. In the mathematics we normally use the symbol to represent the variables of the triangle. In the standard definition we can define the triangle as a three sided polygon. Every triangle contains three sides and thre
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