Question about Casio FX-115ES Scientific Calculator

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A stress computation is 23.7389 N/mm^2 Express the result in preferred SI notation to three significant number

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The SI unit for stress is N/m^2 (Newtons per square metre not Newtons per square millimetre) The figure above should be 23 .7389 * 10^ -9 or 0.0000000237389 N/m^2

Posted on Feb 17, 2014

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How do you wright 567,346 in exponential form?


You can write it in different manners. But there are two special ways scientific notation and engineering notation.
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I have an Casio fx-300ES, and im taking an honors physical science class and i need to know how to divide/multiply/add/subtract in scienctific notation. For example: 6.25x10(to the negative 4) / 4.1x10(to...


All you need to know is how to enter a number in scientific notation. As to the operations you do them the usual way: For example, to multiply you enter a number (in any notation) press the multiplication key then enter the second number (in any notation) and press the = sign to get the result.

The problem is that the result may not be in scientific notation format. But for that you can configure the calculator to always show results in scientific format. Here is how to force that. Press [SHIFT][MODE] to enter (SetUp). In the screen that displays enter the number for the option SCI. You will then be prompted to specify the number of decimal digits. You will enter a number between 0 and 9. If you select 0 you will not have decimals in the result, and if you enter 9 you will have 9 decimals. What is the appropriate number of decimal place to keep in the FINAL result will depend on the number of significant digits in the measuremnets.

To enter a number in scientific notation (ex: 6.25x10^(-4))
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If your calculator is in MathIO you will be able to verify that what was entered is exactly what was neant. In MathIO, you move cursor up or down using the Up or Down arrow. When you finish entering the exponent you use the right arrow to bring cursor to the main level.

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2.4507E-4 is scientific notation for 2.4507 times ten to the minus 4, or .00024507.

Take the 2.4507 and move the decimal point, to the left if the exponent is negative, to the right if it is positive, the specified number of positions.

If the magnitude of the result is too small or too large, the calculator will automatically switch to scientific notation. Imagine a number that has more than 12 digits to the left of the decimal point. How is that going to fit onto the display? Or a number that is 0 followed by the decimal point followed by 12 0s and then some significant digits?

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It comes in the default format. If you want results in scientific notation all you have to do is configure the calculator to do so. Press SHIFT MODE to enter SETUP. Then select the SCI option by pressing the digit key corresponding to the number to the left of the option.
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Scientific notation is a number format that has the following structure (d stands for digit)
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Here are two examples the last two results. The number of digits after the decimal mark is select by the user depending on the number of significant digits in the data. The exponent can be positive or negative.
155b19e.jpg
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Hope it helps

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