2. We see objects that do not produce their own light through a combination of
absorption and reflection. Visible light is a range of wavelengths (ROYGBIV). When
all of the visible light is reflected by an object we see
-. When all of the
visible light is absorbed we see
3. The red heart to the left will only be seen as red if
wavelengths of
light strike it and are reflected to the eye. All other wavelengths except red are
_. If any other color of light except red strikes the heart it will
appear

Explanation:

. If any other color of light except red strikes the heart it will

appear



when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

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