Answer:
a.
f
≅
580
k
H
z
b.
T
=
1.7
⋅
10
−
6
s
Explanation:
a. The formula that relates frequency and wavelength is
f
=
v
λ
where f is frequency, v is the velocity of propagation (velocity of sound in this case), and
λ
is the wavelength.
To detect this fly,
λ
needs to be
5.7
⋅
10
−
4
m
, (or shorter). Using
331
m
s
for the speed of sound,
f
=
331
m
s
5.7
⋅
10
−
4
m
=
58.07
⋅
10
4
s
−
1
≅
580
k
H
z
b. Period,
T
, is the reciprocal of frequency.
T
=
1
f
=
1
58.07
⋅
10
4
s
−
1
=
0.0172
⋅
10
−
4
s
≅
1.7
⋅
10
−
6
s
I hope this helps,
Step-by-step explanation:
