A radiographer in a hospital is preparing a sample of technetium-99. Name two protective measures she should be to ensure she is safe from the radiation?

There are many precautionary measures which is to be taken care of while handling technetium-99.

Explanation:

There is a proper separated area for the handling of the 99Tc and all the containers are properly labelled for the use of technetium-99 only.

While working on it, the person is not allowed to eat or drink anything.

Use of gloves, glasses and other preventive measure is also very important when handling radioactive materials.

Try to maintain a proper distance throughout the experiment.

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

where is the