A joggler runs northbound on the leeward side of a building - see above. Changes in the speed of the wind are the most common cause of a ball drop. On the diagram above draw where the wind speed changes will occur for the joggler. Note where the highest wind speeds will be encountered for the joggler.
____________________ Give the name of the effect that causes the wind speed change.
Sketch a wave with an amplitude of 2 cm and a wavelength of 8 cm. Remind Lee Ling to bring rulers.
____________________ Lee Ling will create a chain wave and write the wavelength and frequency on the board. Calculate the speed of the wave. Remind Lee Ling to get the chain.
An echo travels 105 meters (echo flight distance of 105 m) in 0.3 seconds. Determine the speed of sound based on this one echo.