3 Which statement accurately describes the atoms of a specific element? A An indium‚ In‚ atom contains 115 protons inside the nucleus and 49 neutrons outside the nucleus. B A scandium‚ Sc‚ atom contains 45 electrons outside the nucleus and 21 neutrons inside the nucleus. C An aluminum‚ Al‚ atom contains 27 electrons and 27 protons inside the nucleus. D A zinc‚ Zn‚ atom contains 30 protons inside the nucleus and 30 electrons outside the nucleus.

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

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