we can use formula
where
fL is listener frequency
fs is siren frequency
va is the speed of sound in air
vs is police car speed
so, we have
now, we can change it into m/s
now, we can plug it
..............Answer
Answer:
Step-by-step explanation:
Use the following rules for exponents:
Simplify 24. Find two factors of 24, one of which should be a perfect cube:
Insert:
Now split the exponents. Split 10 into as many 3's as possible:
Insert as exponents:
Split 6 into as many 3's as possible:
Insert as exponents:
Now simplify. Any terms with an exponent of 3 will be moved out of the radical (rule #2):
Simplify:
:Done
Answer:
9 sq ft
Step-by-step explanation:
Answer is answer 17 plus 78