Hf high frequency - Study guides, Class notes & Summaries

Types of prevention - answer-primary- car restraints, bicycle helmets, immunizations secondary- prevent for those with RF-pap, mammo tertiary-mgmt of established disease- meds, lifestyle Primary - answer-Preventing the health problem, most cost effective form of healthcare **IMMUNIZATIONS, ensuring adequate illumination at home (preventing falls) Secondary - answer-Detecting disease in early asymptomatic stages, screenings -Early cause finding of asymptomatic disease via the use of a sc...

RNAS C Practice Test Review 437 Questions with Verified Answers A capacitor and resisitor in parallel - CORRECT ANSWER will have same voltage across since in parallel. if in series, voltage drops would occur they can be treated together If the absolute pressure of a gas is increased from 3 atm to 4 atm at constant volume, then the absolute temperature of the gas will increase by: A. 25%. B. 33%. C. 67%. D. 75% - CORRECT ANSWER B. Assuming the validity of the Ideal-Gas law, PV = n...

Photoelectric effect correct answers -When light of a sufficiently high frequency (typically blue to ultraviolet light) is incident on a metal in a vacuum, the metal atoms emit electrons. -albert einsteins 1905 explanation of the photoelectric effect won him the nobel prize. -Electrons liberated from the metal produce a current. -light beams of greater intensity produce larger current in this way. -higher the intensity of the light beam, the greater the number of photons per unit t...

EXCOM, NAV RADARS, ICOMFrequencies - correct answer HF 3Mhz-30Mhz VHF 30Mhz-300Mhz UHF 300Mhz-3Ghz SHF 3Ghz-30Ghz EHF 30Ghz-300Ghz HF: 3Mhz-30Mhz URC 131 High Frequency Group (HFRG) - correct answer Transmitters: 10 • 8 Broadband • 2 Narrowband Receivers: 20 (EXTERNAL COMMS) HF: 3Mhz-30Mhz ANTENNAS - correct answer 18' Bull Horns 2x 35' Whip NB

RCDD Practice Test Questions And Answers Graded A+ 2024/25. C - correct answer. If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is: A. 3 dB B. 20 dB C. 30 dB D. 40 dB E. 1000 dB B - correct answer. The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at th...

What is an enzyme? - A biological catalyst that speeds up chemical reactions; the chemical reaction we want is the break-down of keratin How long do you leave on an enzyme? - 15 minutes [it takes that long for the chemical reaction to occur] Why don't you use ozone on the steamer with an enzyme on the skin? - Ozone would deactivate the enzyme What type of currant is Galvanic Iontophoresis? - A constant direct current What does Iontophoresis current do to the skin? - It forces electr...

RCDD Practice Test Questions And Answers 100% Solved C - answerIf the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is: A. 3 dB B. 20 dB C. 30 dB D. 40 dB E. 1000 dB B - answerThe signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt. W...

EXCOM, NAV RADARS, ICOM Question and answers correctly solved 2024 Frequencies - correct answer HF 3Mhz-30Mhz VHF 30Mhz-300Mhz UHF 300Mhz-3Ghz SHF 3Ghz-30Ghz EHF 30Ghz-300Ghz HF: 3Mhz-30Mhz URC 131 High Frequency Group (HFRG) - correct answer Transmitters: 10 • 8 Broadband • 2 Narrowband Receivers: 20 (EXTERNAL COMMS) HF: 3Mhz-30Mhz ANTENNAS - correct answer 18' Bull Horns 2x 35' Whip NB

RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7) WITH VERIFIED ANSWERS 2024/2025 If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is: A. 3 dB B. 20 dB C. 30 dB D. 40 dB E. 1000 dB - answerC. 30 dB The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver ...

RCDD TEST QUESTIONS (TOPIC 1 - TOPIC 7) WITH VERIFIED ANSWERS 2024/2025 If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is: A. 3 dB B. 20 dB C. 30 dB D. 40 dB E. 1000 dB - answerC. 30 dB The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver ...