Which answer below correctly identifies the type of change and the explanation for the separation of the
iron with sulfur?
physical change because even though a color change occured, each solid maintained its original
properties, which could be seen as soon as the magnet was applied
physical change because no temperature change was observed, which would be an indicator of
chemical change
chemical change because a color change was observed, which indicated that a new substance
was formed
chemical change because the results depended on the interaction of two substances

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

its a 5.5 n

glad that