Which part of the electromagnetic spectrum generally gives us our best views of stars forming in dusty clouds?

A) infrared
B) visible light
C) ultraviolet
D) blue light


A) infrared

Physics & Space Science

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The speed of light in a material is What is the critical angle of a light ray at the interface between the material and a vacuum?

A) 30° B) 21° C) 24° D) 27°

Physics & Space Science

How are asteroid masses measured?

What will be an ideal response?

Physics & Space Science

For a polymer filament, the linear coefficient of thermal expansion would be expected to be _____________in the axial direction than in the transverse direction.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

What element is found in all life on Earth?

a. hydrogen b. iron c. carbon d. oxygen e. nitrogen

Physics & Space Science