Question
In: Physics
Explain why the sound produced by the horn of an approaching car seems to have a...
Explain why the sound produced by the horn of an approaching car seems to have a higher frequency than one that is stationary.
If the same car approached at a much higher speed, how would this affect the frequency of the sound heard?
Describe the frequency of the sound heard by the observer if the car is moving away at high speed.
Solutions
genius_generous answered 1 year agoRelated Solutions
Suppose you hear a car approaching and its horn is heard as a 3037. Hz tone....
Suppose you hear a car approaching and its horn is heard as a
3037. Hz tone. After passing, you hear 2430. Hz. (a) What was the
Mach number of the car?
Sound waves and tuning forks 1. Why does the sound produced depend heavily on the orientation...
Sound waves and tuning forks
1. Why does the sound produced depend heavily on the orientation of
the folk? This is referred’ directionally dependent’
2. How should you oriente the fork in order to best hear the
sound it produces?
Why does light seem to go straight through an open doorway whereas sound seems to spread...
Why does light seem to go straight through an open doorway
whereas sound seems to spread out when it goes through the same
doorway?
A car is moving at a rapid pace. It is approaching a garage with doors at...
A car is moving at a rapid pace. It is approaching a garage with
doors at either end. The proper length of the car is longer than
the length of the garage. As the car travels through the garage,
describe what the driver would observe. Describe what would be seen
by a stationary observer inside the garage.
The answer in the book is: As the car is moving through the
garage, the driver sees the car as unchanged. The garage...
1. A police officer with an exceptionally good ear hears an approaching motorcycle. The engine sound...
1. A police officer with an exceptionally good ear hears an
approaching motorcycle. The engine sound he hears as the bike
approaches is 195 Hz.
(a) Is the actual sound the bike makes higher or lower in
pitch?
(b) What causes this frequency shift? Indicate with a
diagram.
c) Then after the bike passes he hears 147 Hz as the perceived
pitch. If it was a nic sunny 20 °C day, how fast was the bike
moving?
2. How much...
a. What seems to be the main motives estate builders have for saving? b. Why do...
a. What seems to be the main motives estate builders have for
saving?
b. Why do their motives for saving matter when we try to
evaluate the social efficiency of the estate tax?
The process for buying a car in the U.S. seems to usually exhibit the following characteristics...
The process for buying a car in the U.S. seems to usually
exhibit the following characteristics (it may differ from these,
but I’m not an expert in the auto industry so just take these as
given for the sake of argument):
A car dealership purchases cars from a manufacturer at a
specific wholesale price, set by the manufacturer.
The car dealership puts a sticker in the car window which
includes the MSRP, or manufacturer suggested retail price.
The car dealership...
The process for buying a car in the U.S. seems to usually exhibit the following characteristics...
The process for buying a car in the U.S. seems to usually
exhibit the following characteristics (it may differ from these,
but I’m not an expert in the auto industry so just take these as
given for the sake of argument):
A car dealership purchases cars from a manufacturer at a
specific wholesale price, set by the manufacturer.
The car dealership puts a sticker in the car window which
includes the MSRP, or manufacturer suggested retail price.
The car dealership...
If a sound with frequency fs is produced by a source traveling along a line with...
If a sound with frequency fs is produced by a source traveling
along a line with speed vs. If an observer is traveling with speed
vo along the same line from the opposite direction toward the
source, then the frequency of the sound heard by the observer is fo
= c + vo c − vs fs where c is the speed of sound, about 332 m/s.
(This is the Doppler effect.) Suppose that, at a particular moment,
you are...
A police cruiser, approaching a right-angled intersection from the north, is chasing a speeding car that...
A police cruiser, approaching a right-angled intersection from
the north, is chasing a speeding car that has turned the corner and
is now moving straight east. When the cruiser is 1 mi north of the
intersection and the car is 1 mi to the east, the police determine
with radar that the distance between them and the car is increasing
at 2–√ mph. If
the cruiser is moving at 60 mph at the instant of measurement, what
is the speed of the...
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