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How are the error and the percent error of a measurement calculated?
Wiki User
∙ 13y ago
Take the correct value, subtract the value you got, and then divide that figure by the correct value. Then take the absolute value of that and multiply by 100. For example, say I weighed something and got that it was 2.5 grams, but it really was 2.7 grams. 2.7-2.5=.2. .2/2.7=.074. .074*100=7.4. Thus, I had 7.4% error. Another example: 16-15=-1. -1/15=-.067. .067*100=6.7% error.
Wiki User
∙ 13y ago
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If percent error in measurement of mass is 3 percent and percent error in measurement of velocity is 4 percent then what will the percentage error in measurement of kinetic energy?
Kinetic Energy = 1/2 (mass) (velocity)2Measurement of mass is in error by 3%.Measurement of velocity is in error by 4%.If both are low, then KE is measured as(True KE) x (.97) x (.96)2 = 0.894 TKE = 10.6% low.If both are high, then KE is measured as(True KE) x (1.03) x (1.04)2 = 1.114 TKE = 11.4% high.If one is high and the other low, then the net error is in between these limits.
If error in the measurement of momentum of a particle is 100 percent then the error in the measurement of kinetic energy is what?
p=mv %errror in p= %error in m+%error in v lowest value of m=0 hence %error in velocity=100% k.e=%error in mass=2*%error in velocity K.E=200% similarly K.Eminimun=100% total error in K.E = 100+200 =300 hence error in ke = 300%
What are the errors occur in the kirchhoff's law experiment?
Kirchoff's Law is valid because the percent error that occurs between calculated values and experimental values is less than three percent.
How many pounds make a yard?
This cannot be calculated. A pound is a measurement of weight. A yard is a measurement of length.
An error in which would result in a greater error in the density of the cylinder mass radius or length?
It depends on the relation R/L. If L » R, the sensitive measurement is the radius R. If L « R, the sensitive measurement becomes the length.
Percent error formula?
Divide the calculated or estimated error by the magnitude of the measurement. Take the absolute value of the result, that is, if it is negative, convert to positive. This would make the percent error = | error / measurement |.
How do accuracy and precision of measurement affect calculated values and percent error?
The more precise your instruments of measurement are, the less percentage of error you will have.
Which property of a measurement is best estimated from the percent error?
Measurement error: obviously!
What is the percent error of the measurement 4 cm?
Percent error is calculated by the measured value and the acceped value. For example, if you measure a piece of paper and decide it is 8.45in long, that is your measured value. The package says it is 8.5in long, so it is the accepted value. The formula for percent error is |measured value - accepted value| divided by accepted value ALL times 100.
What makes your percent error calculated value not equal to the actual value?
You do not add the percentage error but the actual error.
What is the percentage error of a length measurement of 0.229 cm if the correct value is 0.225 cm?
What is the percent error of a estimated measurement of 0.229 cm if the actual value is 0.225 cm?
If percent error in measurement of mass is 3 percent and percent error in measurement of velocity is 4 percent then what will the percentage error in measurement of kinetic energy?
Kinetic Energy = 1/2 (mass) (velocity)2Measurement of mass is in error by 3%.Measurement of velocity is in error by 4%.If both are low, then KE is measured as(True KE) x (.97) x (.96)2 = 0.894 TKE = 10.6% low.If both are high, then KE is measured as(True KE) x (1.03) x (1.04)2 = 1.114 TKE = 11.4% high.If one is high and the other low, then the net error is in between these limits.
Find the greatest possible error and the percent error for each measurement 3cm 6cm 36.85g?
.5cm/.5cm/.005g
How do you calculate error in span percentage?
The span error is calculated by taking the span error and dividing it by the original measurement then multiplying by 100. The value gives us the span error as a percentage.
What does a negative percentage error means?
A percentage error is 100*(measurement - true value)/true valueThe percentage error is negative if the measured (or calculated) value is smaller that the true value.
What is the percent error of the measurement 7cm?
what is the number supposed to be if you git 7 cm? Percent error is the percentage that you're incorrect by, so you need another measurement. to do it, you find the difference and then divide by the original so (7-x)/true value then multiply by 100 to get percentage.
IF The weight of a rock is measured at 2.5 pounds what is the percent error in this measurement?
It depends on the calibration of the instrument you are measuring with.
