A cell phone transmits at a frequency of 1.8 x 10⁹ Hz. For the steps and strategies involved in solving a similar problem, you may view the following Example 25-6 video: Part A μA Value What is the wavelength of the electromagnetic wave used by this phone? Express your answer using appropriate units. Units REASONING AND STRATEGY Red light and violet light travel at the same speed, c. ? We can use the relationship c-fa. rearranging it to solve for frequency : ▶▶WOO FIL 700.0 m Wavelength 600.0 m 500.0 mm 400.0m Known: Wavelength of red light, red=700.0 nm Wavelength of violet light, Alet-400.0 mm Speed of light, c-3.00 x 10 m/s Unknown: Frequency of red light, /red-? Frequency of violet light/violet-?

A cell phone transmits at a frequency of 1.8 x 10⁹ Hz. For the steps and strategies involved in solving a similar problem, you may view the following Example 25-6 video: Part A μA Value What is the wavelength of the electromagnetic wave used by this phone? Express your answer using appropriate units. Units REASONING AND STRATEGY Red light and violet light travel at the same speed, c. ? We can use the relationship c-fa. rearranging it to solve for frequency : ▶▶WOO FIL 700.0 m Wavelength 600.0 m 500.0 mm 400.0m Known: Wavelength of red light, red=700.0 nm Wavelength of violet light, Alet-400.0 mm Speed of light, c-3.00 x 10 m/s Unknown: Frequency of red light, /red-? Frequency of violet light/violet-?

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter8: Electromagnetism And Em Waves

Section: Chapter Questions

Problem 1MIO

See similar textbooks

Similar questions

Distances in space are often quoted in units of light years, the distance ugh travels in 1 year. (a) How many meters is a light-year? (b) How many meters is it to Andromeda, the nearest large galaxy, given that it is 2.54106 ly away’ (C) The most distant galaxy yet discovered is 13.4109 ly away. How far is this in meters?
If you wish to detect details of the size of atoms (about 0.2 nm) with electromagnetic radiation, it must have a wavelength of about this size. (a) What is its frequency? (b) What type of electromagnetic radiation might this be?
A 2.50-rn-diameter university communications satellite dish receives TV sigia1s that have a maximum electric field strength (for one channel) of 7.50V/m (see below). (a) What is the intensity of this wave? (b) What is the power received by the antenna? (C) If the orbiting satellite broadcasts uniformly over an area of 1.501013m2 (a large fraction of North America), how much power does it radiate?
(a) Two microwave frequencies authorized for use in microwave ovens are: 915 and 2450 MHz. Calculate the wavelength of each. (b) Which frequency would produce smaller hot spots in foods due to interference effects?
Radio station WWVB, operated by the National Institute of Standards and Technology (NIST) from Fort Collins, Colorado, at a low frequency of 60 kHz, broadcasts a time synchronization signal whose range covers the entire continental US. The timing of the synchronization signal is controlled by a set of atomic clocks to an accuracy of 101012 s, and repeats every 1 minute. The signal is used for devices, such as radio-controlled watches, that automatically synchronize with it at preset local times. WWVB's long wavelength signal tends to propagate close to the ground. (a) Calculate the wavelength of the radio waves from WWVB. (b) Estimate the error that the travel time of the signal causes in synchronizing a radio controlled watch in Norfolk, Virginia, which is 1570 mi (2527 km) from Fort Collins, Colorado.
A particle of cosmic dust has a density =2.0g/cm3 , (a) Assuming the dust particles are spherical and light absorbing, and are at the same distance as Earth from the Sun, determine the particle size for which radiation pressure from sunlight is equal to the Sun's force of gravity on the dust particle, (b) Explain how the forces compare if the particle radius is smaller, (c) Explain what this implies about the sizes of dust particle likely to be present in the inner solar system compared with outside the Oort cloud.
A certain 60.0-Hz ac power line radiates an electromagnetic wave having a maximum electric field strength of 13.0 kV/m. (a) What is the wavelength of this very-low-frequency electromagnetic wave? (b) What type of electromagnetic radiation is this wave (b) What is its maximum magnetic field strength?
Suppose a spherical particle of mass m and radius R in space absorbs light of intensity I for time t. (a) How much work does the radiation pressure do to accelerate the particle (mm rest In the given tine It absorbs the light? (b) How much energy canted by the electromagnetic waves is absorbed by the particle over this time based on the radiant energy incident on the particle?
Lasers can be constructed that produce an extremely high intensity electromagnetic wave for a brief time—called pulsed lasers. They are used to initiate nuclear fusion, for example. Such a laser may produce an electromagnetic wave with a maximum electric field strength of 1.001011 V/m for a time of 1.00 ns. (a) What is the maximum magnetic field strength in the wave? (b) What is the intensity of the beam? (c) What energy does it deliver on an 1.00-mm2 area?
Shown below is the interference pattern of two radio antennas broabcasting the same signal. Explain how this is analogous to the interference pattern for sound produced by two speakers. Could this be used to make a directional antenna system that broadcasts preferentially in certain directions? Explain.
A plane electromagnetic wave of frequency 20 GHz moves in the positive y-axis direction such that its electric field is pointed along the z-axis. The amplitude of the electric field is 10 V/m. The start of time is chosen so that at t = 0, the electric field has a value 10 V/m at the origin. (a) Write the wave function that will describe the electric field wave, (b) Find the wave function that will describe the associated magnetic field wave.
(a) If the electric field and magnetic field in a sinusoidal plane wave were interchanged, in Which direction relative to before would the energy propagate? (b) What if the electric and the magnetic fields re both changed to their negatives?