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Answer :
To find the apparent frequency heard by a stationary observer when an opera singer sings at 950 Hz while moving in a convertible, use the Doppler Effect formula. Upon calculation, the apparent frequency is approximately (c.) 965 Hz
The apparent frequency heard by a stationary observer can be calculated using the Doppler effect formula:
Apparent Frequency = Source Frequency * (Speed of Sound / (Speed of Sound - Observer's Speed))
Plugging in the values given:
Apparent Frequency = 950 Hz * (343 m/s / (343 m/s - 88 km/h))
= 965 Hz
Therefore, the apparent frequency heard by a stationary observer is 965 Hz.
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