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In Definitions

An approximate answer is one that is not exact but that is roughly close to exact. It is NOT a guess. A guess could be correct or entirely wrong. An approximate answer is an e…stimate that derives from the right thinking and that comes close to being accurate. Approximations are necessary when you are not given full input details, or when you are doing initial planning of some kind. (MORE)

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In Science

3E8 m/s = 3x(10^8) m/s = 300000000 m/s = Three Hundred Million meters per second

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The time was approximately nine o'clock. Approximately two million tons of garbage had been dumped at the site. A little known fact is that approximately 80% of all approximat…e figures are made up, including this one. (MORE)

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In Chemistry

What it is: The steady state approximation is a method employed to make the calculation of rate expressions easier. What is done is to assume that the concentration of …any intermediate in the reaction is unchanged (the rate of intermediate produced is equal to the rate at which it is used). This will allow for the determination of an expression for the concentration of the intermediate that can then be substituted in to solve for the rate. An Example: X(OH)2 = X + H20 (disregard H20 as it is a solvent, and let the forward rate constant be k1 and the reverse be k-1) X + I -> XI (with a rate constant of K2) Now the rates of production and use of X must be equal so, k-1[X]+ K2[I][X] = k1[X(OH)2] solving for [X] gives, [X] = k1[X(OH)2]/(k-1+ K2[I]) The reaction rate for the above reaction is: v = k2[I][X] We can not have the intermediate in the final answer so it is an easy thing to sub in the value of [X] we found via the steady state approximation. Validity: This approximation is known to be vaild only for systems in which the concentration of the intermediate is constant. This means the second step (the one using up the intermediate) must be faster than the first (the one producing intermediate) or k1 (MORE)

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The approximation of Pi is 22/7 and the most used form is 3.1416 (rounded up). To 30 decimal places, pi is : 3.14159 26535 89793 23846 26433 83279

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A term used for words in a rhyming pattern that have some kind of sound correspondence but are not perfect rhymes. Words that are similar in sound but do not rhyme exactly. E…xamples: crane / lame sword / word soul / all again / friend (MORE)

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In Uncategorized

An "amble" is a gentle stroll where you take your time to enjoy the surroundings as you go from one place to another. An unhurried or leisurely walk.

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In math, use ~. In medicine, use app. In most other contexts, use approx. For dates, see the related questions.

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She had an approximate time to arrive at the airport. The approximate time is 10.15, but if you want to know the exact time try the phone service.

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The change in density of a fluid can be neglected if the temperature change in it is small. This assumption is however not applicable when buoyant forces are in consideration …as gravity changes the specific weight of a fluid considerably. (MORE)