1. the variable of social structure that lays the broadest framework of social location is a. race b. culture c. social class d. status

Option B i.e Culture is the right and the correct answer.

Culture is the variable of social structure that lays the broadest framework of social location. On the other hand we see race, social class and social status divide people according to their color, income, occupation, education, preveliges etc.

c)as speed changes, wavelength and frequency change.

everything changes!

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