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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Evaluate the Nusselt number for flow over a sphere for the following conditions



GIVEN


FIND
The Nusselt number (Nu)

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Earth is located about ____________ of the way out from the center of the Milky Way Galaxy

a. 1/2 b. 1/3 c. 2/3 d. 3/2

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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

Physics & Space Science