X-rays come from certain regions of the interstellar medium because gas molecules in those regions are at a very high density
a. True
b. False
Indicate whether the statement is true or false
False
Physics & Space Science
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A quantity that has both a magnitude and direction associated with it is called a __________
Fill in the blank(s) with correct word
Physics & Space Science
Semiconductors: When a voltage is applied across a p-type semiconductor, the holes
A. are destroyed. B. move toward the positive electrode. C. move toward the negative electrode. D. do not move.
Physics & Space Science
A tightly wound barred spiral would be classified as
A) S0. B) Sa. C) SBc. D) Sc. E) SBa.
Physics & Space Science
If you jump straight up while inside a fast-moving train that gains speed, you land
A) slightly ahead of your original position. B) at your original position. C) slightly behind your original position.
Physics & Space Science