Req prac work for Ms H due Friday 2nd Feb

How does the frequency affect the wavelength on a stationary wave?

·         Collect a set of results from the signal generator and rubber cord to investigate this.

·         Repeat your readings to get a mean for each wavelength.

·         Draw an appropriate graph for your results.

·         What is the gradient of your graph?  Calculate this and work out what the gradient represents.

Required practical write-up

·         This needs to follow the instructions and guidance on the sheet and include error analysis – (working out the uncertainties and percentage uncertainties and commenting on them) and a graph with error bars.

·         You may need to use the mass of the wire to work out the mass per unit length (1.5m of wire weighs 1.46g) for comparison.

Additional tips:

·         Uncertainty of a mean value = 1/2 range

·         Percentage uncertainty of a mean= 1/2 range/mean x 100.

·         Uncertainty of a single value = precision

·         Percentage uncertainty of a single value – precision/value x 100