[填空题]
A student uses the shown setup to measure the speed of sound.
The sound source has a frequency of $590\,Hz$. The student changes the distance between the two microphones d and records the time difference $Δt$ between the received sounds from the microphones.
The graph below shows the data from this experiment.
1.Draw the line of best fit.
2.Determine the fractional uncertainty of d when the time difference Δt is 2.2 ms.fractional unceratinty =
3.Showing your working on the graph, calculate the speed of the sound wave. c = $ms^{-1}$
4.Determine the wavelength of the sound. λ = m
参考答案: 空格1: $\frac{4}{75}$±2% or 5.3%±2%
空格2: 343±2%
空格3: 0.58±2%
