Scientific Skills & Tools (id: 0670783b4)

本题目来源于试卷: Scientific Skills & Tools，类别为 IB物理学

[填空题]
In an experiment to determine the speed of sound in air uqpsv29u2mjnj dcho -l )v7-8, some students useddds 8(njmpg 7b1xo95pg7q3or a number of tuning forks of kg7b 8qp prxj3nd57s (dg1o m9onown frequencies and a tube with a moveable piston arranged as shown below.
For each tuning fork they used the setup shown in the diagram.

The students would sound the tuning fork, then move the piston slowly downwards until a loud sound is first heard. The length L was then measured. This was repeated for different tuning forks.
The graph shows the variation of $\frac{1}{L}$ with frequency.

1.Draw the line of best fit.
2.Calculate the fractional uncertainty of $\frac{1}{L}$ when the length is 20cm.  %
3. 1.Determine the gradient, expressing your answer with the correct SI units.  $m{s}^{-1}$
2.Use the gradient calculated in (i) to determine the speed of sound.  $m{s}^{-1}$

参考答案:
空格1: 2  空格2: 83.33±3%  空格3: 333.32 


本题详细解析:

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