# Example 16-1
v1 = 340 m/s
x1 = 1 mile
t1 = x1 / v1

# Example 16-2
d = 2 m
v = 343 m/s
t1 = d / v ; ms
d2 = 40 m
t2 = d2 / v ; ms

# Example 16-3
ii = 1e-12 W/m^2
b = 75
i2 = ii * 10^(b/10)

# Example 16-4
10^0.3

# Example 16-6
b = 10 * log10(1 / 1e-12)

# Example 16-7
i1 = 1e-12 W/m^2
rho = 1.29 kg/m^3
v = 343 m/s
f = 1e3/s
a = (1 / pi() / f) * sqrt(i1 / (2 * rho * v))

# Example 16-8
r = 5 cm * 150

# Example 16-9
v = 343 m/s
f = 440 /s
lam = v / f

# Example 16-10
f1 = 343 m/s / (2 * 0.26 m)
f2 = 343 m/s / (4 * 0.26 m)

# Example 16-11
f1 = 262 / s
x1 = 343 m/s / (2 * f1)

# Example 16-12
v = 343 m/s
f = 1150 / s
lam = v / f

# Example 16-13
f = 20 / (5 s)

# Example 16-14
v1 = 25 m/s
v2 = 343 m/s
f1 = 1600 /s
f2 = f1 / (1 - v1 / v2)
f3 = f1 / (1 + v1 / v2)

# Example 16-15
v1 = 3.5 m/s
v2 = 343 m/s
f1 = 5051 /s
f2 = f1 / (1 - v1 / v2)
f3 = f1 / (1 + v1 / v2)

# Homework Problems:

TBD