EXAMPLE 31-4 ESTIMATE Cell phone antenna. The antenna of a cell phone is often wavelength long. A particular cell phone has an 8.5-cm-long straight rod for its antenna. Estimate the operating frequency of this phone.

EXAMPLE 31-4 ESTIMATE Cell phone antenna. The antenna of a cell phone is often wavelength long. A particular cell phone has an 8.5-cm-long straight rod for its antenna. Estimate the operating frequency of this phone.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 26PE: Lunar astronauts placed a reflector on the Moon's Surface, off which a laser beam is periodically...

See similar textbooks

Related questions

Q: 2. Suppose a particle of constant mass m with position x > 0, moves in one space dimension under the…

A: (a) Total energy of the particle remain conserved.(b) We have found the expression of velocity as a…

Q: A laser beam of diameter d₁ =1.4 mm is directed along the optical axis of a thin lens of focal…

Q: Problem 2.60 A point charge q is at the center of an uncharged spherical conducting shell, of inner…

A: Concept - In conducting shell Electric field will be equal to zero. To calculate the work to move…

Q: (-8,0) A LOST B (7,0) 仲 (0-3) Find resultant vector

A: The objective of the question is to find the resultant vector of two points A and B located at…

Q: A negative charge with the magnitude of 5 nC (nano- Coulombs) accelerates in a constant electric…

A: The objective of the question is to find the electric potential at the final location of a…

Q: A4.4 kg mess kit sliding on a frictionless surface explodes into two 2.2 kg parts, one moving at 4.8…

A: Mass of mess kit , m=4.4 kg Mass of first part, m1=2.2 kg Mass of second part, m2=2.2 kg Speed of…

Q: A roller coaster car is going over the top of a 16-m-radius circular rise. At the top of the hill,…

A: Radius of circle = 16 mAt the topWeight of passenger = 60 % of their true weightWe have to…

Q: Please explain the physics of phase separation in detail.

A: Phase separation is a phenomenon observed in various systems in physics, chemistry, and materials…

Q: A conducting strip of unknown width is moving at a speed of 0.33 m/s through a uniform magnetic…

Q: ει R1 a R1 w R2 R1 www R1 As shown in the figure, the resistances are R1 = 3.0 2 and R2 = 6.0 2, and…

Q: Hello please help me with physics questions: Part A: given a velocity versus time graph, what does…

A: Part (A) OPTION (1) Part (B) OPTION (3) Part (C) OPTION (2)Explanation:Step 1:Part (A) The correct…

Q: 4. Two parallel wires each carrying a current of 2.2 A in the same direction are shown below. 2.2 A…

A: The objective of the question is to find the direction and magnitude of the net magnetic field at…

Q: A beam of light travelling through glass meets the interface with air at an incidence angle of i =…

A: 45°Explanation:

Q: - A 100 W lightbulb has a resistance of about 12 when cold (20 deg * C) and 156 when on (hot).…

A: The objective of the question is to estimate the temperature of the filament of a lightbulb when it…

Q: 79. A series RL circuit has two resistors and two inductors. The resistors dissipate 7 W and 12 W.…

A: Power dissipated by resistors:PR,1=7 W, PR,2=12 WPower dissipated by inductors:PL,1=15 VARs, PL,2=8…

Q: 79. A series RL circuit has two resistors and two inductors. The resistors dissipate 7 W and 12 W.…

A: The objective of the question is to find the current flowing through a series RL circuit given the…

Q: In the context of quantum mechanics, consider a particle confined within a one- dimensional…

A: In quantum mechanics, a particle contained within a one-dimensional potential well serves as a…

Q: When an inductor is connected to a 60.0 Hz source it has an inductive reactarice of 51.2 Q.…

A: 1) 4.051 A2) 0.573 HExplanation:

Q: A hollow steel ball weighing 4 pounds is suspended from a spring. This stretches the spring the…

Q: An object is placed 9.00 cm in front of the cornea. (The cornea is thin ans has approximately…

A: Detailed explanation of this question is given below.Hope it helps you.If you still have any doubt…

Q: Before m₂ 30° 45° m₁) After As shown in the above figure, after the collision, m; moves with speed…

Q: A turntable is off and is not spinning. A 0.9 g ant is on the disc and is 14 cm away from the…

A: The objective of the question is to determine the angular velocity, linear velocity, angular…

Q: Q.4 What is the energy of a gamma photon of frequency 8.92 × 1020 Hz? Q.5 What is the speed of light…

Q: 2. The electromagnet below has a current of 2.5 A and 500 turns and a length of 15 cm. (The picture…

A: 1) Given parameters,Current in the wire (I) = 2.5 Alength of the electromagnet (L) = 0.15 mThe…

Q: As a roller coaster crosses the top of a 50 m diameter loop the loop, it’s apparent weight is the…

Q: Part A Wavelength is O the time in which an oscillation repeats itself. O the distance in which an…

A: diagram for wave length

Q: A series AC circuit contains a resistor, an inductor of 200 mH, a capacitor of 4.80 μF, and a source…

A: a) The inductive reactance is XL=62.831853 ohms. b)The capacitive reactance is XC=663.1456 ohms. c)…

Q: A step-down transformer is used for recharging the batteries of portable electronic devices. The…

A: All parts of the given questions have been explained in detail. If any doubt please feel free to…

Q: (1) Reflection Pokryci (d) to (EC) low (a) in Goal: Apply the law of reflection. The drawing shows a…

Q: an electron undergoes circular motion while immersed in a uniform magnetic field with field strength…

A: Magnetic Field(B) = 20T

Q: A 8.5 V potential difference is applied between the ends of a 0.80-mm-diameter, 90-cm-long nichrome…

Q: a van travels a distance d=25.6m in the positive x direction in a time t1=23.7s, at which point it…

A: The objective of the question is to calculate the van's average velocity, acceleration during the…

Q: Two long parallel wires both carry a current of 130 A in the +z direction. One wire passes through…

Q: If the ball at E exerts a force of 18 N on the ground, find the applied force Fin units of N. The…

A: The objective of the question is to find the applied force F in units of N when the ball at point E…

Q: Two loudspeakers placed 6.0 m apart are driven in phase by an audio oscillator whose frequency range…

Q: A small metal sphere carrying a net charge of Q = -2.00 uC is held stationary by insulating…

A: From conservation of energy, the total mechanical energy of the system always remains constant that…

Q: Question 1 A 65 cubic ft container of MSL air at 2070 psf gage pressure and 54 degrees Fahrenheit is…

Q: Consider a 150 turn square loop of wire 16 cm on a side that carries a 56 A current in a 1.75 T…

Q: You and your lab partner are conducting the Centripetal Force Lab with the goal of determining the…

A: See detailed solution below:Explanation:P.S. If you found this solution helpful, please give me a…

Q: Problem 2: A runaway train has a mass of 1.5 × 104 kg and a speed of 5 m/s. How much time does it…

Q: 2/162 Car A is traveling at 25 mi/hr and applies the brakes at the position shown so as to arrive at…

Q: A converging lens of focal length f=2 cm is used to focus the image of an object onto a screen. The…

A: At a distance 12.625 cm from the screen must the lense be placed in order to have an image…

Q: Find the change in entropy of a monoatomic Van der Waals gas using the equation of state nRT an² an²…

A: The objective of the question is to find the change in entropy (ΔS) of a monoatomic Van der Waals…

Q: 9.8 What are the directions of the centrifugal and Coriolis forces on a person moving (a) south near…

A: Here is the solution of your question:-Explanation:To understand the directions of the centrifugal…

Q: Two particles are fixed on an x axis. Particle 1 of charge 44.7 μC is located at x=-17.3 cm;…

Q: An atom in an excited state 1.95 eV above the ground state remains in that excited state 1.15 us…

A: Please refer to the attachments below Thank you Let me know if you have any doubts…

Q: A technician has a 28.0 μF capacitor and a variable frequency AC source. Determine the following.…

A: a) Frequency 21.449 Hzb) reactances 180.97ohmExplanation:Step 1:Step 2: Step 3:

Q: Consider the magnetic forces and particle velocities shown in the figure. a. What is the direction…

A: Solution: (a) Magnetic field will be inwards.(b) Magnetic field will be towards left.(c) Magnetic…

Q: How many fringes appear between the first diffraction-envelope minima to either side of the central…

Q: 77-kg water skier is being pulled by a nylon (Young's modulus 3.7 × 10° N/m2) tow rope that is…

Question

EXAMPLE 31-4. Cell phone antenna. The antenna of a cell phone is often 1/4 wavelength long. A particular cell phone has an 8.5-cm-long straight rod for its antenna. Estimate the operating frequency of this phone.

EXAMPLE 31-4 ESTIMATE Cell phone antenna. The antenna of a cell
phone is often wavelength long. A particular cell phone has an 8.5-cm-long
straight rod for its antenna. Estimate the operating frequency of this phone.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step by step

Solved in 1 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

Lunar astronauts placed a reflector on the Moon's Surface, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round-trip time. (a) To what accuracy in meters can the distance to the Moon be determined, if this time can be measured to 0.100 ns? (b) What percent accuracy is this, given the average distance to the Moon is 3.84108m ?
A circular radar antenna on a Coast Guard ship has a diameter of 2.10 m and radiates at a frequency of 15.0 GHz. Two small boats are located 9.00 km away from the ship. How close together could the boats he and still he detected as two objects?
Dielectric slab waveguide Consider a dielectric slab waveguide that has a thin GaAs layer of thickness 0.25 μm between two AlGaAs layers. The refractive index of GaAs is 3.6 and that of the AlGaAs layers is 3.4. What is the cutoff wavelength beyond which only a single mode can propagate in the waveguide, if the refractive index does not vary greatly with the wavelength? If a radiation of wavelength 860 nm (corresponding to bandgap radiation) is propagating in the GaAs layer, what is the penetration of the evanescent wave into the AlGaAs layers? What is the mode field width (MFW) of this radiation? (
- The refractive index of the glass is 1.5. What is the speed of light as it passes glass? A. 0.4x10° m/s B. 1.2x10° m/s C. 1.6x10% m/s D. 2.0x108 m/s
Estimate how long an AM antenna would have to be if it were (a) A or (b)A. AM radio is roughly 1 MHz (530 kHz to 1.7 MHz).
In the U.S., two different frequency ranges are allocated for over-the-air radio broadcast: the AM radio band, in the range 540-1600 kHz, and the FM radio band, in the range 88-108 MHz. (a) Find the longest and shortest wavelengths (in m) in the AM band. longest m shortest (b) Find the longest and shortest wavelength (in m) in the FM band. longest m shortest Need Help? Read It
Estimate the radiation pressure due to a bulb that emits 25W of EM radiation at a distance of 9.5 cm from the center of the bulb. Estimate the force exerted on your finger tip if you place it at this point.
Title Two parallel wires of length 0.5 m and separation of 0.1 mm carry equal and opposite currents... Description Two parallel wires of length 0.5 m and separation of 0.1 mm carry equal and opposite currents (differential mode) of 100 mA at 100 MHz. An antenna with an antenna factor of 20 dB at 100 MHz is used to measure the emissions in an FCC Class B test. If the antenna is parallel to and in the plane of the wires, determine the voltage measured by a spectrum analyzer attached to the antenna. [26.8 dBµV]
Example The normalized radiation intensity of an antenna is defined by U(0) = sin(0), Find the: b. FNBW a. HPBW 270 300 1 240 330 210 180 150 Exam The r F a.
(1) Ge... an A v google - Yahoo Search Results Submit: Previous Answers Correct Estimate the radiation pressure due to a bulb that emits 25 W of EM radiation at a distance of 7.5 cm from the center of the bulb. Assume that light is completely absorbed. Express your answer to two significant figures and Include the appropriate units. P = 1.2x10-6 N Part B HA Estimate the force exerted on a fingertip at this point. Suppose that the area of the fingertip is 1.3 cm². Assume that light is completely absorbed. Express your answer to two significant figures and includ the appropriate units. F = 1.6 10 <-10 N Submit Previous Answers Request Answer y pearson login - Yahoo Search Results Yahoo Sear... ? X Incorrect; Try Again; 3 attempts remaining Course Home P Pearson Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy Permissions | Contact Us |
Certain orientations of a broadcast television antenna give better reception than others for a particular station. Explain.
6) THE POWER OF THE SUN AN TOTAL AT ALL em WAVELENGTHS THE DISTANCE BETWEEN SUN & EARTH IS r = 150,000,000 KM. IS 3.9 x 1026 W. (A) IF THE SUN IS DIRECTLY OVERHEAD, HOW MUCH POWER STRIKES A ROOF-TOP SOLAR CELL ARRAY CONSISTING OF 24 SOLAR PANELS, EACH MEASURING 1.5m x 2.5m? (8) IF EACH CELL IS 75% EFFICIENT AT CONVERTING THE SUN'S ENERGY TO ELECTRICITY, How MUCH POWER IS AVAILABLE ? (C) HOW DO THESE TWO ANSWERS CHANCE AT DEARBORN'S LATITUDE OF 42°