ce radar speed guns basically work by reflecting electromagnetic waves off the car's surface. Suppose you want to e real fast on the motorway and somehow you have tracked exactly the frequency of police speed radar. The uency of the police speed radar is f = 1238 Hz. Find its wavelength. Hint c 3 x 108 No need to include the unit. ce your answer in whole numbers. nd your answer to 0 decimal places.

ce radar speed guns basically work by reflecting electromagnetic waves off the car's surface. Suppose you want to e real fast on the motorway and somehow you have tracked exactly the frequency of police speed radar. The uency of the police speed radar is f = 1238 Hz. Find its wavelength. Hint c 3 x 108 No need to include the unit. ce your answer in whole numbers. nd your answer to 0 decimal places.

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

Similar questions

Help me
A standing-wave pattern is set up by radio waves between two metal sheets 2.80 m apart, which is the shortest distance between the plates that produces a standing wave pattern. What is the frequency of the radio waves? 107 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. MHz
MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A pulsar is a type of rotating neutron star that emits a beam of electromagnetic radiation. Imagine a pulsar that is moving toward Earth at a speed of 856.500 km/s. It emits mostly radio waves with a wavelength (at the source) of 132.500 cm. What is the observed wavelength of this radiation on Earth? (Assume the Earth is stationary. Consider the speed of light c = 3.00000 × 108 m/s. Give your answer to at least six significant figures.) 4.0 133 What relationship describes the frequency of a wave for an observer that is moving relative to the source? What is the relationship between frequency and wavelength? cm
Estimate answers up to 3 decimal places Calculate the wavelength of light emitted from the lamp if the frequency is 2 x 10^14 Hz. Express your answer in nanometer.
Models are particularly useful in relativity and quantum mechanics, where conditions are outside those normally encountered by humans. What is a model?
How do we describe the the electromagnetic wave? A. Intensity is proportional to the number of photons B. Intensity is not dependent of photons. C. Intensity increases as frequency increases D. Intensity is wavelength dependent
1. What is the wavelength of a radio photon from an AM radio station that broadcasts at 1470 kilohertz? Express your answer to three significant figures and include the appropriate units. 2. What is the energy of a radio photon from the same station? Express your answer to three significant figures and include the appropriate units. For question 1 I am not sure how to solve it because the frequency is in kilohertz and I don't know how to convert it into something that I can use. For the speed of light in this question, would it be best to use 3 x 10^8 m/s or 3 x 10^5 km/s? For question 2 I have the formula to use, I'm just uncertain of how to use it.
1. The intensity of an electromagnetic wave is shown below. The dashed line is the envelope of the wave's intensity. Use arrows to explain on the figure what and what is associated with its phase associate is with its group velocity velocity. N t,z
Maxwell equation in phasor form is new to me I need you to answer the below questions. what is exactly p(rho) and jw? what is s written under quantities? How can we express these equation verbally? Point Form V. Ds = Pys V.B.0 P VX E, = -jwB, V x H₂ = J, + jwDs
Tmax Amin = 380nm = 380x1 & min=- M 1 max: 700hm - 700x 10-9. f max= 300×10= 1.895 3x108 = 4.286x Amin 700x10 V=N 1 Frequency range: 4.286 x 1014 -7.895x1014 f = * 듯 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? 16X374 + 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? 3 =
I Review | Constants | Periodic Table A proton is confined within an atomic nucleus of diameter 4.0 fm. Part A Estimate the smallest range of speeds you might find for a proton in the nucleus. Express your answer using two significant figures. Ην ΑΣφ Δυ m/s Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Provide Feedback Next >
As we go along the electromagnetic spectrum starting at radio waves and ending on gamma rays, which of the following do we discover? A. That the energy of the waves decreases, and the wavelength also decreases. B. That the energy of the waves decreases, and the wavelength increases. C. That the energy of the waves increases, and the wavelength also increases. D.That the energy of the waves increases, and the wavelength decreases.