Why can radio waves get through the dust clouds, but light is blocked?
What will be an ideal response?
The interstellar dust grains are about the size of the waves of light they absorb, but are much smaller than the long radio waves that move around them freely.
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What are the Magellanic Clouds? What happened in the LMC in 1987?
What will be an ideal response?
The electric field strength in the space between two closely spaced parallel disks is 1.0 × 105 N/C. This field is the result of transferring 3.9 x 109 electrons from one disk to the other
What is the diameter of the disks? (e = 1.60 × 10-19 C, ?0 = 8.85 × 10-12 C2/N • m2) A) 3.0 cm B) 1.5 cm C) 4.5 cm D) 6.0 cm
Most of the current star formation in the Milky Way occurs in spiral arms
Indicate whether the statement is true or false
A viscoelastic model of a solid with a series spring and dashpot is a _________solid.
Fill in the blank(s) with the appropriate word(s).