College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 24, Problem 14PE
Some radar systems detect the size and shape of objects such as aircraft and geological terrain. Approximately what is the smallest observable detail utilizing 500-MHz radar?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Scientists use laser range finding to measure the distance to the moonwith great accuracy. A very brief (100 ps) laser pulse, with a wavelengthof 532 nm, is fired at the moon, where it reflects off an array of 100 4.0-cm-diameter mirrors placed there by Apollo 14 astronauts in 1971. The reflected laser light returns to earth, where it is collected by a telescope and detected. The average earth-moon distance is 384,000 km. The laser beam spreads out on its way to the moon because of diffraction, reaching the mirrors with an intensity of 300 W/m2. The reflected beam spreads out even more on its way back because of diffraction due to the circular aperture of the mirrors.a. What is the round-trip time for the laser pulse to travel to the moon and back?b. If we want to measure the distance to the moon to an accuracy of 1.0 cm, how accurately must the arrival time of the returning pulse be measured?c. Because of the spread of the beam due to diffraction, the light arriving at earth from one…
Infrared radiation from young stars can pass through the heavy dust clouds surrounding them, allowing astronomers here on Earth to study the earliest stages of star formation, before a star begins to emit visible light. Suppose an infrared telescope is tuned to detect infrared radiation with a frequency of 3.30 THz. Calculate the wavelength of the infrared radiation.
Be sure your answer has the correct number of significant digits.
A microwave oven operates at 2.90 GHz. What is the wavelength of the radiation produced by this appliance?
Express the wavelength numerically in nanometers.
Chapter 24 Solutions
College Physics
Ch. 24 - The direction of the electric field shown in each...Ch. 24 - Is the direction of the magnetic field shown in...Ch. 24 - Why is the direction of the current shown in each...Ch. 24 - In which situation shown in Figure 24.24 will the...Ch. 24 - In which situation shown in Figure 24.25 will the...Ch. 24 - Should the straight wire antenna of a radio he...Ch. 24 - Under what conditions might wires in a DC circuit...Ch. 24 - Give an example of interference of electromagnetic...Ch. 24 - Figure 24.26 shows the interference pattern of two...Ch. 24 - Can an antenna be any length? Explain your answer.
Ch. 24 - If you live in a region that has a particular TV...Ch. 24 - Explain why people who have the lens of their eye...Ch. 24 - How do ?uorescent soap residues make clothing look...Ch. 24 - Give an example of resonance in the reception of...Ch. 24 - Illustrate that the size of details of an object...Ch. 24 - Why don't buildings block radio waves as...Ch. 24 - Make a list of some everyday objects and decide...Ch. 24 - Your friend says mat more patterns and colors can...Ch. 24 - The rate at which information can be transmitted...Ch. 24 - Give an example of energy carried by an...Ch. 24 - In an MRI scan, a higher magnetic field requires...Ch. 24 - Laser vision correction often uses an excimer...Ch. 24 - Verify that the correct value for the speed of...Ch. 24 - Show that, when SI units for 0 and 0 are entered,...Ch. 24 - What is the maximum electric field strength in an...Ch. 24 - The maximum magnetic field strength of an...Ch. 24 - Verify the units obtained for magnetic field...Ch. 24 - (a) Two microwave frequencies are authorized for...Ch. 24 - (a) Calculate the range of wavelength for AM radio...Ch. 24 - A radio station utilizes frequencies between...Ch. 24 - Find the frequency range of visible light, given...Ch. 24 - Combing your hair leads to excess electrons on the...Ch. 24 - Electromagnetic radiation having a 15.0m...Ch. 24 - Approximately what is the smallest detail...Ch. 24 - A radar used to detect the presence of aircraft...Ch. 24 - Some radar systems detect the size and shape of...Ch. 24 - Determine the amount of time it takes for X-rays...Ch. 24 - If you wish to detect details of the size of atoms...Ch. 24 - If the Sun suddenly turned off, we would not know...Ch. 24 - Distances in space are often quoted in units of...Ch. 24 - A certain 50.0-Hz AC power line radiates an...Ch. 24 - During normal bee?ng, the heat creates a maximum...Ch. 24 - (a) The ideal size (most efficient) for a...Ch. 24 - (a) What is the wavelength of 100MHz radio waves...Ch. 24 - (a) What is the frequency at the 193-nm...Ch. 24 - TV-reception antennas for VHF are constructed with...Ch. 24 - Conversations with astronauts on lunar walks had...Ch. 24 - Lunar astronauts placed a reflector on the Moon's...Ch. 24 - Radar is used to determine distances to various...Ch. 24 - Integrated Concepts (a) Calculate the ratio of the...Ch. 24 - Integrated Concepts (a) Calculate the rate in...Ch. 24 - What is the intensity of an electromagnetic wave...Ch. 24 - Find the intensity of an electromagnetic wave...Ch. 24 - Assume the helium-neon lasers commonly used in...Ch. 24 - An AM radio transmitter broadcasts 50.0 kW of...Ch. 24 - Suppose the maximum safe intensity of microwaves...Ch. 24 - A 2.50-m-diameter university communications...Ch. 24 - Lasers can be constructed that produce an...Ch. 24 - Show that for a continuous sinusoidal...Ch. 24 - Suppose a source of electromagnetic waves radiates...Ch. 24 - Integrated Concepts An LC circuit with a 5.00pF...Ch. 24 - Integrated Concepts What capacitance is needed in...Ch. 24 - Integrated Concepts Police radar determines the...Ch. 24 - Integrated Concepts Assume the mostly infrared...Ch. 24 - Integrated Concepts On its highest power se1ting,...Ch. 24 - Integrated Concepts Electromagnetic radiation from...Ch. 24 - Integrated Concepts A 200-turn flat coil of wire...Ch. 24 - Integrated Concepts If electric and magnetic field...Ch. 24 - Unreasonable Results A researcher measures the...Ch. 24 - Unreasonable Results The peak magnetic field...Ch. 24 - Unreasonable Results An LC circuit containing a...Ch. 24 - Unreasonable Results An LC circuit containing a...Ch. 24 - Create Your Own Problem Consider electromagnetic...Ch. 24 - Create Your Own Problem Consider the most recent...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Light a bulb using a battery and a single wire. Observe and record the behavior (i.e., brightness of the bulb w...
Tutorials in Introductory Physics
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
If acceleration is proportional to the net force or is equal to net force.
Conceptual Physics (12th Edition)
33. (II) A sled is initially given a shove up a frictionless 23.0° incline. It reaches a maximum vertical heigh...
Physics: Principles with Applications
The electromagnetic spectrum of light is often arranged in terms of frequency. Which one of the following has t...
Lecture- Tutorials for Introductory Astronomy
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
- An FM station broadcasts music at 93.5 MHz (megahertz, or 106 Hz). Find the wavelength (in m, nm, and Å) of these waves.arrow_forwardQ20: Consider a radar with B = 0.3 GHz and an SNR of 20, find (1) the range resolution, (2) the range accuracy. Ans: (1) 0.5 m, (2) 8 cm.arrow_forwardThe initials "FM" stand for frequency modulation. When broadcasting a radio wave, the constant frequency "B" in our problems becomes a varying quantity, f(t), such that Y= Asin[2pieF(t)]t. This causes the waves to have an inconsistent wavelength. The FCA assigns eah radio station a "band-width" around an assigned frequency in megahertz, MHz, which is simply a million waves/seond. For example, 98.7 is allowed to let it's frequencies vary slightly about/below 98.7 MHz. A. Suppose a FM radio station is assigned an equation of y=Asin[2pie(93,200,000 + 10,000sin 500piet)]t. What is the assigned frequency in MHz? B. Give the minimum and maximum frequencies of the FM radio station over time. C. If you've ever hanged stations while traveling, you may have been able to hear 2 FM stations at the same time. Explain how this can happen.arrow_forward
- Frequency range: 4.286x10¹4 -7.895x10 F = ** 3. One type of radar works by sending a pulse out to and object and timing how long it takes for the pulse to return after bouncing off of the object. If the radar is tracking a plane 100 km away, how long does it take from the time the pulse leaves the radar to the time it returns? 2/4 V + 3.33x10 4. Radar antenna tend to be of comparable size to their wavelength. The radiation used by radar ranges from 300 Mhz to 15 Ghz. a. What is the range of wavelengths? b. If the antenna dimensions are comparable to the wavelength of the radiation used, what will be the approximate size range of antenna used for radar? 5. When used for imaging, the wavelength of the radiation needs to be smaller than the thing being imaged. To a get a pretty good idea of what kind of radiation is needed to image something assume that the wavelength must be the size of the object or smaller. With this in mind, would visible light work well to image protozoa with a…arrow_forwardWhat is the frequency of infrared light of 1.0*10^-4 wavelength?arrow_forwardIf the frequency of the wave used by yourfavourite station is 97.6 Megahertz, what isthe wavelength?Answer in units of m. If the station is 45 km away, how long does ittake for the radio waves to reach you from thestation?arrow_forward
- Calculate the wavelengths of a 4.97-GHz cell phone signal. Express your answer in meters. Normal format with 3 SF.arrow_forwardWhat is the wavelength (in m) of a radio signal with a frequency of 98.3 MHz? Enter the numerical part of your answer to three decimal figures. The speed of light in a vacuum (and in normal air) = Vlight = c = 3.00 × 108 m/s. Your Answer:arrow_forwardWhat is Bragg’s law? Write the working principle of XRD analysis based on which the characterization tool is used.arrow_forward
- Calculate the wavelength of the frequencies below: a) 3KHz (human hearing) b) 100MHz (FM radio) c) 150MHz (VHF radio) d) 600MHz (TV/UHF signal) e) 300THz (infrared light) f) 600THz (visible-green light) g) 900THz (ultraviolet light) Please, if possible, answer in a typed way, as the handwriting often interferes with understanding;arrow_forwardA VHF television station assigned to channel 12 transmits its signal using radio waves with a frequency of 204.MHz. Calculate the wavelength of the radio waves. Be sure your answer has the correct number of significant digits.arrow_forwardIf electric and magnetic field strengths vary sinusoidally in time at frequency 0.92 GHz, being zero at t = 0, then E=E0sin(2πft) and B=B0sin(2πft). Part (a) When are the field strengths next equal to zero? Give your answer in seconds. Part (b) When do the field strengths reach their most negative value? Give your answer in seconds. Part (c) How much time is needed for the fields to complete one cycle? Give your answer in secondsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
What Are Electromagnetic Wave Properties? | Physics in Motion; Author: GPB Education;https://www.youtube.com/watch?v=ftyxZBxBexI;License: Standard YouTube License, CC-BY