The force a magnet exerts on another magnet, on iron or a similar metal, or on moving charges is
a. proportional to the charge of the magnet.
b. a magnetic force.
c. an electric force.
d. proportional to the mass of the magnet.

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

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray