Factors 40 ÷ 8 = 5 and 40 ÷ 5 = 8. We say that 8 and 5 are factors of 40. If we can divide a whole number by another whole number without remainder, the second number is a factor of the first. The numbers 1, 2, 4, 5, 8, 10, 20 and 40
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Coulombs Law The electric force between two point charges is directly proportional to the magnitude of each charge (q1, q2), inversely proportional to square of the separation between their centers (r), directed along the separation vector connecting their centers. This relationship is known as Coulomb’s Law. Charles Augustin de Coulomb (1736-1806) France. As an equation it
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A Market A market is a place where buying and selling of goods and services are done by the buyers and sellers. A market can also be defined as an institutional arrangement whereby the buyers and sellers come in contact to exchange goods and services. The manufacturer buys raw materials and sells finished goods. Types
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Literature: Features of a Play Plays have the following features: The speakers’ names are printed in capitals at the beginning of their speech, with a colon following the name. E.g. DANIEL:, TOLU: e.t.c A play may also contain stage directions e.g. (Takes her hand.) These always appear in italics, and in brackets. E.g. DANIEL (He turns
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ESTIMATION AND APPROXIMATION ROUNDING OFF To ’round off’ or ‘approximate’ a number to a desired degree of accuracy, we round the number up if the next digit is 5 or more or we round the number down if the next digit is less than 5. We represent approximately as ‘~’ Examples 73 is close to 70 if approximating to or rounding in “tens”.
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ALKENES An alkene also known as olefin is an unsaturated hydrocarbon containing at least one carbon-to-carbon double bond. The simplest alkenes, with only one double bond, no rings, and no other functional groups, are hydrocarbons with the general formula CnH2n. The first three are: Ethene C2H4 Propene C3H6 Butene C4H8 Laboratory Preparation of Ethene Dehydration of
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Number bases Most people count in tens. For instance, the place value of the digits in number 4956 in this system Thousands hundreds tens units ↓ ↓ ↓ ↓ 4 9 5 6 The place values are in powers of ten. It is called the base ten system. 4956 = 4 X
A. Structure: Nouns – Countable and Uncountable/Concrete and Abstract Countable nouns are nouns that can be counted (e.g. oranges). So how do we know whether or not a noun is countable or uncountable? A countable noun is a noun with both a singular and a plural form. Singular Form Plural Form car cars coin coins broom brooms
Elements and Symbols The atoms are particles of elements and are represented by chemical symbols. A chemical symbol is a sign and it is made up of a letter or two letters to represent the atom of the element. Chemical symbols of atom of elements are derived from the names of the elements. The following
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Conversion from Other Bases to Base (10) Ten It is possible to use any number as a base in building a numeral system. The number of unit used in the system is always equal to the base. Decimal/Denary Base 10-Digits Quinary Decimal/DenaryBase 10-Digits QuinaryBase 5-Digits BinaryBase 2-Digits OctalBase 8-Digits HexadecimalBase 16-Digits 0 0 0 0