Monday, September 19, 2011
Thursday, September 15, 2011
Essential Questions Ch 1, 2, 3
1) In order to measure quantities, Scientists must first answer the questions "What do I know for sure?" and "What can I estimate?". After a scientist has determined what measures they know for sure, they may estimate one final digit. This estimated digit is called the "uncertain".
2) One may estimate their error in measurement by finding the percent error. In order to find the percent error, one must have the actual (or theoretical) value. To find the percent error, you must subtract the theoretical value from the experiment value. After you have done this, you must divide it by the theoretical value. After this value is found, one must multiply it by 100 for it to be a percentage. This value is the percent of error.
2) One may estimate their error in measurement by finding the percent error. In order to find the percent error, one must have the actual (or theoretical) value. To find the percent error, you must subtract the theoretical value from the experiment value. After you have done this, you must divide it by the theoretical value. After this value is found, one must multiply it by 100 for it to be a percentage. This value is the percent of error.
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