An electron microscope makes use of
A) short wavelengths of light.
B) the wave nature of electrons.
C) electron attraction and repulsion.
D) electron current.
E) the inertia of electrons.
Answer: B
Physics & Space Science
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GIVEN
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Earth is the only terrestrial planet to have experienced tectonic stresses and volcanic activity
Indicate whether the statement is true or false
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A 20-mF capacitor is attached across a 1000-V power supply. What is the net charge on the capacitor?
a. 20 mC c. 10 mC b. 40 mC d. none of these choices
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a. 1/2 b. 1/3 c. 2/3 d. 3/2
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