a. what is the potential difference between the plates b. if the electrons are stopped halfway between the plates, what is their initial speed, v? c. what is teh minimum speed the electrons must have if they are to make it all the way to the negative plate

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Chapter29: Introduction To Quantum Physics
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Two square, conducting plates each contain charge of magnitude Q = 35.4 nC. The plates have side length l = 20 cm and are separated by a distance d = 40 mm. Electrons are fired at speed v throgh a tiny hole in the positive plate toward the negative plate. (Remeber that E = Q/Ep0A for parallel plates)

a. what is the potential difference between the plates

b. if the electrons are stopped halfway between the plates, what is their initial speed, v?

c. what is teh minimum speed the electrons must have if they are to make it all the way to the negative plate?

+Q
Plte
l= 20x10?m
electrons fired through
a tiny hole in this plate
d= 0.04 m
d
Transcribed Image Text:+Q Plte l= 20x10?m electrons fired through a tiny hole in this plate d= 0.04 m d
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