By Jerry D. Wilson
This market-leading guide for the first-year physics laboratory path bargains quite a lot of class-tested experiments designed in particular to be used in small to mid-size lab courses. a chain of built-in experiments emphasizes using automatic instrumentation and features a set of "computer-assisted experiments" that let you achieve adventure with sleek gear. through examining info via various tools, rookies achieve a better figuring out of the thoughts at the back of the experiments. The 8th variation is up-to-date with 4 new competitively priced labs and thirty new Pre-Lab Demonstrations, designed to catch curiosity sooner than the lab and requiring merely commonly to be had fabrics and goods.
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Extra resources for Physics Laboratory Experiments
Sample text
B. Accuracy and Precision Accuracy and precision are commonly used synonymously, but in experimental measurements there is an important distinction. The accuracy of a measurement signifies how close it comes to the true (or accepted) value—that is, how nearly correct it is. 1 Systematic error. An improperly zeroed instrument gives rise to systematic error. The ammeter, which measures electric current, has positive nonzero reading with no current through it. This would systematically give an incorrect reading larger that the true value.
In expressing experimental error or uncertainty, when should (a) experimental error and (b) percent difference be used? 6. How could the function y 5 3t2 1 4 be plotted on a Cartesian graph to produce a straight line? What would be the numerical values of the slope and intercept of the line? 12 Copyright 2015 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s).
The b in the algebraic relationship is called the y-intercept and is equal to the value of the y-coordinate where the graph line intercepts the Y-axis. In Fig. 0 cm. Notice from the relationship that y 5 mx 1 b, so that when x 5 0, then y 5 b. If the intercept is at the origin (0, 0), then b 5 0. The equation of the line in the graph in Fig. 0. The general equation for uniform motion has the form d 5 vt 1 do. 5 cm/s. Some forms of nonlinear functions that are common in physics can be represented as straight lines on a Copyright 2015 Cengage Learning.