Please Help! ASAP!

1.) Which is the LEAST accurate description of a radio telescope?
A. It does not contain lenses.
B. It does not receive visible light.
C. It cannot be used during the daytime.
D. It cannot detect invisible electromagnetic radiation.

2.) Visible light and most from outer space can be observed on Earth's surface.
A. radio waves
B. sound waves
C. gamma rays
D. ultraviolet rays

C and D

Explanation:

Its possible to use telescopes during the day time.

Gamma rays were found on earth's atmosphere.

do you have a formula possibly

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