A 75-kW radio station broadcasts its signal uniformly in all directions, What is the average intensity of its signal at a distance of 250 m from the antenna?

Q: A 75-kW radio station broadcasts its signal uniformly in all directions. (a) What is the average…

A: The intensity of the signal at a distance r from the antenna can be given as, Here, P is the power…

Q: A dish antenna having a diameter of 16.0 m receives (at normal incidence) a radio signal from a…

A:

Q: Radio station KSON in San Diego broadcasts at both 1240 kHz (AM) and 97.3 MHz (FM). a) Which of…

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Q: Radio waves and microwaves are used in therapy to provide “deep heating” of tissue because the waves…

A: The expression for speed of an electromagnetic wave is Here, f is the frequency of wave and c is…

Q: Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 1.50…

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Q: An FM broadcast station has a transmitting antenna located 50 m above average terrain. How far away…

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Q: A radio station has two antennae which are used to broadcast their 582 kHz radio wave signal. The…

A: It is given that

Q: The New River Gorge bridge in West Virginia is a 518 meter long steel arch. How much will its length…

A: ∆l=l0αTf-Ti

Q: Assume the mostly infrared radiation from a heat lamp acts like a continuous wave with wavelength…

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Q: During the Cold War, American submarines operated as "lone wolves" at extreme ocean depths for many…

A: Given:frequency of signals f=82 Hz signals: radio signal v=c=3*108  m/s

Q: Assume the radiation from a heat lamp is monochromatic, with a wavelength of 1.5 μm . If the lamp’s…

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Q: Extremely low-frequency (ELF) waves that can penetrate the oceans are the only practical means of…

A: The frequency of the ELF wave,   The expression for the wavelength of the ELF wave,

Q: A 55-kW radio station broadcasts its signal uniformly in all directions. (a) What is the average…

A: Intensity is given by I=P/4πr²

Q: Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 1.00…

A: Intensity, I = 1 W/m2Power, P = 10 WArea of a sphere, A = 4πr2Permittivity of free space, ε0 =…

Q: Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1.00 W/m2.   a)…

A: The maximum safe intensity of microwaves for Human exposure is taken to be 1.00 W/m2

Q: An FM station broadcasts classical music at 96.0 MHz (megahertz, or 106 Hz). Find the wavelength (in…

A:

Q: Energy carried by an EM wave coming through the air can be used to light a bulb that is not…

A: Given : Maximum power (Po) = 1.05 W Angle (θ) = 71°

Q: The antenna for an AM radio station is a 73.5-m-high tower whose height is equal to one‑quarter the…

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Q: Satellite TV is broadcast from satellites that orbit the earth. Their antennas broadcast a 15 kW…

A: So to solve this question we first need to find the intensity (I) , which can be derived by…

Q: A radio transmitter broadcasts 4.5 kW of power to a 3.2 m diameter ceceiver.   Calculate the…

A:

Q: A news broadcaster is to be aired from a newsroom of a television station. The news is to be…

A: The distance of the person from the transmitter is given by d=750 km=750×103 m

Q: Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 2.00…

A: Given: The intensity is I=2 W/m2. The power is P=10 W. The speed of light is c=3X108 m/s. The…

Q: Assume the mostly infrared radiation from a heat lamp is IR-B and acts like a continuous wave with…

A: Need to find: Intensity change in temperature.

Q: ow many minutes would it take a radio wave to travel from the planet  Venus to Earth?  (Average…

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Q: If the Average Power Density of an antenna is given as: 60sin (0) Wav = WIm²) a) What is the value…

A: a) θ = 30o r = 2 m   therefore, Wav = 60 ×sin2 (30o)π (22) = 1.1937 W/m2   Wav = 1.1937 W/m2

Q: Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 1.00…

A: Since the surface area of the sphere of radius r is given by S=4πr2, the intensity of microwaves at…

Q: Radio waves and microwaves are used in therapy to provide “deep heating” of tissue because the waves…

A: Given: The penetration depth as the depth at which the wave intensity has decreased to 37% of its…

Q: Assume the mostly infrared radiation from a heat lamp acts like a continuous wave with wavelength…

A:

Q: Radio waves and microwaves are used in therapy to provide “deep heating” of tissue because the waves…

A: Frequency, f = 27 MHz

Q: Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1.81 W/m​2​​. If…

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Q: A certain radar installation that is used to track airplanes transmits electromagnetic radiation…

A:

Q: A 4.25 m diameter university communications satellite dish receives TV signals that have a maximum…

A: Given- Diameter d=4.25 m Radius r=d/2=2.125 m Electric field strength E= 7.5 μV/m=7.5×10-6 V/m…

Q: An AM radio transmitter broadcasts 54.0 kW of power uniformly in all directions. (a) Assuming all of…

A: Power , P = 54 kW = 54 x 103 W Distance , R = 26 km = 26 x 103 m To find = a) Intensity at R .…