Answer: Degree of emission from the cathode
Answer: Degree of emission from the cathode
Answer: 1 to 100 GHz
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Answer: Both B and C
Answer: To keep the electrons from spreading out
Answer: The absorption of energy by the signal from an electron stream
Answer: magnetron
Answer: All of the above
Answer: At the cathode end of the helix
Answer: SONAR
Answer: Delayed spreading
Answer: Slow fading
Answer: Slow fading
Answer: Sixth
Answer: 10 GHz
Answer: S = 3λR/L
Answer: 8493 km
Answer: Attenuation
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