The valency of oxygen is 2
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Answer
The frequency and the period are 45 cycles/second and 0.023 seconds
Explanation:
The frequency of the engine is given by :
We have, the engine increases its performance from zero to 2700 rpms.
Frequency,
The time period of the engine is given by :
T = f/f
So,
Hence, the required frequency and the period are 45 cycles/second and 0.023 seconds respectively.