the crankshaft of a car engine is turning at 3.6x10^2 rpm. Four of its eight spark plug fire during each revolution, at equal time intervals. The coil provides the sparks for all the plugs.
a) How many sparks does the coil produce per second?
b) What is the time between sparks?
Thank you so much in advance:)
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Verified answer
frequency f = 360 rev/min * 4sparks/rev * 1min/60s = 24 sparks/s
period T = 1/f = 0.042 s