Why infrared radiations are used for signals during the war?

Q: Armature radio like operates at 30MHZ. What is an antenna size to effectively radiate power at this…

A:

Q: Microwaves Radio waves infrared waves Gamma waves O Microwaves

A: Given:- Which of these types of electromagnetic radiation has the lowest energy?MicrowavesRadio…

Q: How does radio waves are produced

A: Introduction: The radio wave is a type of electromagnetic radiation which produce due to…

Q: Which of the following requires a physical medium through which to travel? a. Radio Waves b. Sound…

A: Given:  A wave which requires a medium

Q: What does an incident radio wave do to the electrons in a receiving antenna?

A: Antenna is usually a piece of metal and there will be large number of free electrons in it that…

Q: What are the similarities and differences between radio waves and light?

A:

Q: Why is it not possible for the human eye to see the frequencies of infrared light? Explain.

A: Why is it not possible for the human eye to see the frequencies of infrared light?

Q: What travels faster: a radio signal or sound in air?

A: A radio signal travels faster than sound in air.

Q: Which type of electromagnetic radiation travels faster? Radio waves Gamma They both travel at the…

A: The electromagnetic waves are those kinds of waves that will be produced when an electric field and…

Q: The three types of radiation placed in order of increasing frequency are … a) gamma rays, radio…

A:

Q: What is the wavelength of the 53,500 HZ radio wave used by "radio-controlled" clocks and…

A: Given : Frequency (f) = 53500 Hz

Q: In an MRI scan, a higher magnetic field requires higher frequency radio waves to resonate with the…

A: In MRI scan, a uniform magnetic field is present which means the patient in the MRI scan is…

Q: Taking the speed of the radio signal as 3×108  meters per second, calculate the time taken for a…

A: speed of radio signal, v = 3 * 108 m/s distance of GPS satellite from the receiver, d = 23500 Km =…

Q: What is the wavelength of the 67,000-Hz radio wave used by "radio-controlled" clocks and…

A:

Q: Long distance radio broadcasts use short-wave bands. Why?

A: Long distance radio broadcasts use short wave bands because only short wave bands can be refracted…

Q: What form of electromagnetic radiation can most effectively penetrate human tissue? O visible light…

A: Electromagnetic radiation with shorter wavelengths penetrates materials most effectively.

Q: Do radio waves travel at the speed of sound or at the speed of light? Explain.

A: Radio waves are electromagnetic waves.

Q: the frequency range for an AM radio is 540 kHz to 1600kHz. calculate the shortest range and the…

A:

Q: The electromagnetic wave used in Radar is

A: Radar can be defined as a detection system which is used to find the range, velocity or angle of the…

Q: What type of energy does a radio use?

A: Given:  radio

Q: Which type of electromagnetic radiation has the highest frequencies?

A: Electromagnetic waves are transverse waves.

Q: What is the wavelength of a 89.7 MHz radio wave?

A: The expression for the required wavelength is,

Q: The kind of heat transfer that travels through space in electromagnetic waves is

A: Heat is form of energy.

Q: How can infrared radiation be detected?

A: Infrared radiation is emitted by all living organisms in the form of heat . Although our eyes cannot…

Q: Can radio waves have the same frequencies as sound waves(20 Hz–20,000 Hz)?

A: Frequency of radio waves

Q: Why do radio waves or electromagnetic waves in general decrease as distance increases?

A: The amplitude of radio waves or electromagnetic wave is decreases with time is called damping.…

Q: What common problems would arise during transmission and reception of radio waves? Explain the…

A: For the propagation and reception of radio waves, a transmitter and receiver are employed. When the…

Q: Which of these EM waves has the highest frequency? О а. Х-гаys O b. Microwaves O c. Ultraviolet d.…

A: Ans:- There are seven regions in the electromagnetic spectrum which in order of lowest to highest…

Q: Which type of light waves have wavelengths similar in size to a human? O Gamma rays O X-rays O…

A: Visible light has wavelength range 380nm to 750nm

Q: Do radio waves travel more slowly than gamma rays?

A: Radio waves have the longest wavelength and gamma rays have the shortest wavelength. However, both…

Q: Why are the microwaves in a microwave oven tuned to water?

A: Microwaves are defined as electromagnetic radiations with a frequency ranging between 300 MHz to 300…

Q: 11:33 moodle.nct.edu.om Question 9 Not yet answered Marked out of 1.00 Flag question Which of these…

A:

Q: Radio wave has the highest radiative energy. False True

A: Identify TRUE or FALSE "The radio wave has the highest radiative energy"

Q: Changing the position of the antenna often affects a station’s signal strength. What does this imply…

A: Question: Changing the position of the antenna often affects a station’s signal strength. What does…

Q: Considering all the uses of radar technology, how might radar have been more important in leading to…

A: Radar is a detection system that uses radio waves to determine the range, angle, or velocity of…

Q: List the three sub-divisions of infra-red (IR) radiation and state their ranges.

A:

Q: True/False. All radio waves have the same frequency. O Truc O False

A: Radio wave- A radio wave is an electromagnetic wave of a frequency which lies between  104 Hz and…

Q: Which of the following has the shortest wavelength? A) Gamma rays B) Radio waves C) Microwaves D)…

A:

Q: What is the wavelength of radio waves transmitted by a radio station with a frequency of 220 million…

A: Wavelength is,

Q: In a word problem, you were given the value for the wavelength of a gamma ray. In that problem, how…

A: The wavelength of gamma rays is given and we have to find which other variables must be given to…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.