Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 5, Problem 2Q
What is probably the greatest source of error in the experimental procedure?
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Students have asked these similar questions
Errors assigned to random variables should not be specified to more than 2 significant figures.
The mass of an aluminum cube was measured to be (A)=71.2 g. Using
the Vernier caliper, the length of its side has measurements between
29 mm and 30 mm in the main scale and falls exactly at the (B)=28
mark on Vernier scale. From this data, what is the percent error
between the standard and experimental density of aluminum in (F)?
Density of Solids
Side Length Measurement
Density (N)
Volume
Percent
Material Mass (g) Number of Tick Marks Final Reading (cm³) Standard Experimental Error (%)
Main Scale Vernier Scale
(mm)
Aluminum (A)
29 and 30
(B)
(C)
(D)
2.70
(E)
(F)
O 5.052%
2.095%
7.603%
O 3.348%
How is error analysis done in the experiments you have done? Explain how the change between the number of data reads, mean value, actual value and error should be when performing an experiment?
Chapter 5 Solutions
Physics Laboratory Experiments
Ch. 5 - What effect might the distance of fall have on...Ch. 5 - From the preceding calculation, it should be...Ch. 5 - Given three objects with same size and shape, but...Ch. 5 - Suppose that the initial height of the object were...Ch. 5 - How is the acceleration of a car traveling on an...Ch. 5 - Will the graph of instantaneous velocity versus...Ch. 5 - Objects of different mass were used to see whether...Ch. 5 - What is probably the greatest source of error in...Ch. 5 - What are the major sources of error in this...Ch. 5 - What would be the shapes of the curves for a graph...
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- In a Measurement ,the Expected value is 48 V and the measured value is 43 V. Find (i) Absolute error Ea , (ii)Relative error Er, (iii) Absolute accuracy Aa (iv) Relative Accuracy Ar.arrow_forwardIn expressing experimental error or uncertainty, when should (a) experimental error and (b) percent difference be used?arrow_forwardA series of four measurements of the ratio of the circumference to diameter of a disk are made. The results of these measurements are: 3.140, 3.133, 3.132, 3.133. The average of the four measurements is the experimental value for Pi-Lab and the accepted value is Pi = 3.141. What is the percent error of these measurements? a) 1 % b) 2% c) 0.5% d)0.2%arrow_forward
- A series of four measurements of g are made in the physics lab. The results of these measurements in ms2/ are: 9.63, 9.58, 9.71, 9.68. The average of these four measurements is the experimental value of g and the accepted value is 9.80 ms2/. What is the percent error of these measurements?arrow_forwardIf R denotes the reaction of the body to some stimulus ofstrength x , the sensitivity S is defined to be the rate of change of the reaction with respect to x . A particularexample is that when the brightness x of a light source isincreased, the eye reacts by decreasing the area R of thepupil. The experimental formulaarrow_forwardSuppose that the known value of the initial speed is 5.96m/s. if you experimentally find the value of initial speed as 7.6m/s,find the percent error of your experimental value.(Give your answer as integer, and don't type % sign, for example, to express 60% only write 60)arrow_forward
- Why is it important to consider the experimental error in all the empirical results presented?arrow_forwardYou repeat a measurement that contains random error many times, construct a histogram of your measurements and determine that the FWHM of the histogram is equal to 1.9. What is the uncertainty in one measurement, δn, equal to?arrow_forwardAn experiment is performed to obtain the value of a physical property. If the true (i.e., correct) value of the property is 50 and the measured (i.e., experimental) value is 33, the percent error of the experimental result is: Your Answer: Answerarrow_forward
- Find the theoritical value of "F" and compare that with an experimental value provided to you finding % error.arrow_forwardWhat are the different types of errors encountered in an experiment? Give two examples of each.arrow_forwardthe second is the available units and the tolerance that needed in the answerarrow_forward
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