An orange is placed on a table in a completely dark room, without any source of light. which of the following choices correctly describes what an observer will see as he looks in the direction of the orange?
a) the orange will not be seen at all because light is not bouncing off its surface.
b) the orange will be seen by the observer immediately, but it will be very dim.
c) the orange will only be seen after the observer’s eyes adjust to the darkness.
d) the orange will be seen by the observer immediately, but it will be very dim. the orange will become brighter as the observer’s eyes adjust to the darkness.

correct it is c.) b b

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