Technician A says that the starter motor used to crank diesel engines can draw up to 400 amps of current. Technician B says that
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Answer:
Explanation:
Let the velocity of observer the driver be V₀ and the velocity of police car the source be. Let V be the velocity of sound in air.
The apparent frequency f is given by the following relation
F is real frequency.
Now F = 2600,
Putting these values in the equation
f = 3146 Hz.
b ) After the police passes , the sign of velocity of observer and source get reversed.
f = 2175 Hz
c ) When the police car is also going northward and trying to overtaking the driver the frequency is calculated as follows .
f = 2799 Hz
When the policy car already crosses the drives the frequency will be as follows
f = 2445 Hz