Select the term that best matches each description. [ Choose ]
A chemist tests an element and finds
that it does not react with any other
element. What type of element is it
most likely to be?
[ Choose ]
metal
alkali metal
transition metal
nonmetal
metalloid
halogen
An element that has some properties
of both metals and nonmetals is
referred to as a(n)
noble gas
A substance has a shiny surface. It is
[Choose ]
<
-into

i believe the answer is b.

grav potential energy

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