Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 1.00 W/m². If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away, rmin, must you be to be exposed to an average intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. Imin = m What is the maximum electric field strength Eo at this distance? The permittivity of free space is €o = 8.854 × 10-12 C²/(N-m²). The speed of light is c = 3.00 × 10° m/s. E, = V/m Note: Early radar units leaked more than modern ones do. This caused identifiable health problems, such as cataracts, for people who worked near them.

Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 1.00 W/m². If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away, rmin, must you be to be exposed to an average intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. Imin = m What is the maximum electric field strength Eo at this distance? The permittivity of free space is €o = 8.854 × 10-12 C²/(N-m²). The speed of light is c = 3.00 × 10° m/s. E, = V/m Note: Early radar units leaked more than modern ones do. This caused identifiable health problems, such as cataracts, for people who worked near them.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: Project Seafarer was an ambitious program to construct an enormous antenna, buried underground on a…

A: Given data The effective area is given as A = 10000 km2. The effective wavelength is given as…

Q: A microwave source produces pulses of 16.0-GHZ radiation, with each pulse lasting 1.00 ns. A…

A: Given, The average power, P=30kWP=30×103W The radius, r=4.5×10-2m Frequency of source, f=16×109Hz…

Q: A spotlight shines onto a square target of area 0.35 m2. If the average (rms) strength of the…

A: Given information RMS value of the magnetic field of em wave Brms = 1.2 × 10-7 T Area of the target…

Q: An electromagnetic wave of frequency 150MHZ is characterized by a magnetic field intensity of…

Q: One goal of the Russian space program is to illuminate dark northern cities with sunlight reflected…

A: Area of the mirrored surface circular orbit of diameter dA = π(d/2)2 goven d = 200 mso A =…

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

Q: The radiation pressure exerted by beam of light 1 is half theradiation pressure of beam of light 2.…

A: The radiation pressure, Pr=ICFor 100% absorption of lightPr=2ICFor 100% reflection of light

Q: Show that the radiation pressure at the center of the Sun is negligible compared to the gas…

A: Electromagnetic fields are capable of transferring momentum. When this exchange occurs a mechanical…

Q: A B-emitting radiation source gives 250 units of radiation at a distance of 4.0 m. At what distance…

A: We know thatPower per unit area is called intensity.I=PAArea is given by…

Q: An AM radio station broadcasts isotropically (equally in all directions) with an average power of…

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: Two identical short dipole antennas are driven in phase with each other with equal strength and emit…

A: A loose definition of polarization is the direction in which electromagnetic fields emanate from an…

Q: Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1.32 W/m². If a…

A: Given:Maximum intensity of radiated microwave = 1.32 W/m²Power output of the radar = 10.0W…

Q: Suppose an isotropic light source has a power of 59 W and that its light is normally incident on a…

Q: Emergency responders for radioactive material incidents normally use the inverse square law of…

A: The inverse square law states that the intensity of any radioactive source decreaseswith the square…

Q: A heat lamp emits infrared radiation whose rms electric field is Erms-3200 N/C. (a) What is the…

A: The rms value of the of the electric field is 3200 N/C. The radius of the person's leg region is 3.9…

Q: Microwaves are produced with an intensity of 1.42 W/m which are polarized at an angle of -84.1…

Q: Project Seafarer was an ambitious program to construct an enormous antenna, buried underground on a…

A: a) frequency = 0.0314 Hz or s-1 b) period of radiation emitted = 31.85 s

Q: A uniform plane wave in free space is given by: Exs=800cos⁡(10^8t - βz)az V/m Find: Phase…

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: 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: An intense light source radiates uniformly in all directions. At a distance of 5.0m from source, the…

Q: On its highest power setting, a certain microwave oven projects 0.75 kW of microwaves onto a 20 by…

Question

Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 1.00 W/m2. If a radar unit leaks
10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away, rmin- must you be to be
exposed to an average intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with
no complications from absorption or reflection.
Imin
What is the maximum electric field strength E, at this distance? The permittivity of free space is €o = 8.854 × 10-12 C²/(N-m²).
The speed of light is c =
3.00 x 108 m/s.
Eo
V/m
Note: Early radar units leaked more than modern ones do. This caused identifiable health problems, such as cataracts, for people
who worked near them.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Explanation

VIEW

Step 2: Result

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1.81 W/m2. If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away must you be to be exposed to an intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. (Note that early radar units leaked more than modern ones do. This caused identifiable health problems, such as cataracts, for people who worked near them.)
What inductance must be connected to a 25 pF capacitor in an oscillator capable of generating 490 nm (i.e., visible) electromagnetic waves?
A parabolic satellite dish is somewhat bowl-shaped, but the incoming signal is captured across its circular cross-section. A parabolic satellite dish with radius, R = 1.5 m, picks up a TV signal with a peak electric field strength of 74 mV/m. (a) What is the average intensity of the incoming signal? W/m² (b) What is the average (total) power received by the satellite dish? W R (c) What is the average output power of the orbiting transmitter if it broadcasts uniformly over an area of 1.5 x 10¹3 m²? MW
A 4.25 m diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.5 μV/m . (a) What is the intensity of this wave in W/m2? (b) What is the power received by the antenna in W? (c) If the orbiting satellite broadcasts uniformly over an area of 1.50 × 1013 m2 (a large fraction of North America), how much power does it radiate in W?
3. 0.80 um EM Wave is coupled to square-shaped waveguide (0.0010mm x 0.0010mm), (a) Starting from the dispersion relation(k vs. o), find the group and phase velocity of the lowest TE mode. (b) What is the difference in arrival time between the lowest and the highest modes after propagating 1.0 km through the waveguide?
A radio wave transmits 44.0 W/m2 of power per unit area. A flat surface of area A is perpendicular to the direction of propagation of the wave. Assuming the surface is a perfect absorber, calculate the radiation pressure on it.
What is the radiation pressure 1.2 m away from a 600 W lightbulb? Assume that the surface on which the pressure is exerted faces the bulb and is perfectly absorbing and that the bulb radiates uniformly in all directions.
Determine the minimum transmission BW in a (FDM/AM & SSB) system transmitting 30 different messages, each message signal have BW of 4 kHz.
Suppose the maximum safe average intensity of microwaves for human exposure is 1.00 W/m2. Early radar units leaked radiation more than modern ones do, which caused identifiable health problems, such as cataracts, for people who worked near them. Part (a) If a radar unit leaks 6.5 W of microwave radiation uniformly in all directions, what is the closest distance, in centimeters, you can be to the unit and still be considered safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. Part (b) What is the maximum electric field strength E0, in volts per meter, of the microwave radiation at the maximum safe intensity?
What is the average pressure that a normally indecent sinusoidal plane EM wave would exert on reflecting surface if its RMS magnetic field strength is 0.986 millitesla. answer in N/m2
An electromagnetic wave is normally incident on a flat surface. Assuming the power per unit area transmitted is S = 56.5 W/m2, and the surface is a perfect absorber, what is the radiation pressure (in nPa) on the surface? nPa Need Help? Read It the the line that through the tu
An electromagnetic wave is normally incident on a flat surface. Assuming the power per unit area transmitted is S = 61.4 W/m², and the surface is a perfect absorber, what is the radiation pressure (in nPa) on the surface? nPa Need Help? Read It