What is the speed of sound at a temperature of 56°c?

365 meters/second

Explanation:

The speed of sound in air (v, in meters/second) is computed as function of temperature (T, in Celsius) by the following formula:

v = 331.4 + 0.6*T

Replacing with T = 56 °C we get:

v = 331.4 + 0.6*(56) = 365 meters/second

answer: good job it's all correct !

explanation:

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day