Microscopes are inherently limited by the wavelength of the light used. How much smaller (in order of magnitude) can we "see" using an electron microscope whose electrons have been accelerated through a potential difference of 50000 V than using red light (500 nm)?
a. 3
b. 4
c. 5
d. 6
e. 14
c
Physics & Space Science
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When an acid reacts with a carbonate or hydrogen carbonate, the products are water, carbon dioxide, and ______________
Fill in the blank(s) with correct word
Physics & Space Science
Complete and balance the equation: Al + HCl ? ____________________
Fill in the blank(s) with correct word
Physics & Space Science
A star system where we observe the magnitude to increase and decrease is a(n) ________
Fill in the blank(s) with correct word
Physics & Space Science
Interstellar absorption lines are narrow primarily because:
A) there is very little interstellar matter. B) molecules always produce narrow absorption lines. C) most of the matter is ionized, and atoms moving fast produce sharp lines. D) the matter is at a low temperature, and atoms are almost still. E) All of the above are correct.
Physics & Space Science