Doppler Effect: a Factory Siren Indicating the End of a Shift

question 89

Essay

Doppler effect: A factory siren indicating the end of a shift has a frequency of 90.0 Hz. The speed of sound is 343 m/s.
(a) What frequency is perceived by the occupant of a car traveling towards the factory at 25.0 m/s?
(b) What frequency is perceived by the occupant of a car traveling away from the factory at 30.0 m/s?

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Definitions:

Residuary

Relating to the remainder of an estate after debts, specific bequests, and expenses have been accounted for.

Intestacy Laws

Legal provisions that dictate the distribution of a deceased person's estate in the absence of a will.

Per Stirpes

is a legal term used in wills and estate planning that describes how assets are divided among heirs, according to branches of the family.

Intestacy Laws

The body of law that governs the distribution of a deceased person's estate when they die without a valid will.