COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 22, Problem 34QAP
To determine
The time taken by radio wave to travel from earth to moon
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(a)
Suppose a star is 6.42 ✕ 1018 m from Earth. Imagine a pulse of radio waves is emitted toward Earth from the surface of this star. How long (in years) would it take to reach Earth
(b)
The Sun is 1.50 ✕ 1011 m from Earth. How long (in minutes) does it take sunlight to reach Earth?
(c)
The Moon is 3.84 ✕ 108 m from Earth. How long (in s) does it take for a radio transmission to travel from Earth to the Moon and back?
(a)
Suppose a star is 7.61 ✕ 1018 m from Earth. Imagine a pulse of radio waves is emitted toward Earth from the surface of this star. How long (in years) would it take to reach Earth?
years
(b)
The Sun is 1.50 ✕ 1011 m from Earth. How long (in minutes) does it take sunlight to reach Earth?
minutes
(c)
The Moon is 3.84 ✕ 108 m from Earth. How long (in s) does it take for a radio transmission to travel from Earth to the Moon and back?
s
1)How long does it take a radio signal from Earth to reach the Moon, which has an orbital radius of approximately 3.84×10^8 m? (Express your answer to three significant figures.)
Chapter 22 Solutions
COLLEGE PHYSICS
Ch. 22 - Prob. 1QAPCh. 22 - Prob. 2QAPCh. 22 - Prob. 3QAPCh. 22 - Prob. 4QAPCh. 22 - Prob. 5QAPCh. 22 - Prob. 6QAPCh. 22 - Prob. 7QAPCh. 22 - Prob. 8QAPCh. 22 - Prob. 9QAPCh. 22 - Prob. 10QAP
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- (a) Suppose a star is 8.59 x 1018 m from Earth. Imagine a pulse of radio waves is emitted toward Earth from the surface of this star. How long (in years) would it take to reach Earth? years (b) The Sun is 1.50 x 1011 m from Earth. How long (in minutes) does it take sunlight to reach Earth? minutes (c) The Moon is 3.84 x 108 m from Earth. How long (in s) does it take for a high-intensity laser beam to travel from Earth to the Moon and back?arrow_forwardApproximately how long would it take a telephone signal to travel 5.46 x 10^10 m from Earth to Mars ?arrow_forwardWhen the NASA Rover Spirit successfully landed on Mars in January of 2004, Mars was 170.2 × 106 km from Earth. Twenty-one days later, when the Rover Opportunity landed on Mars, Mars was 198.7 × 106 km from Earth. A) How long, in minutes, did it take for a one-way transmission to the scientists on Earth from Spirit on its landing day? B) How long, in minutes, did it take for scientists to communicate with Opportunity on its landing day?arrow_forward
- As space exploration increases, means of communicationwith humans and probes on other planets are being developed.(a) How much time (in s) does it take for a radio wave of fre-quency 8.93x10^7s⁻¹ to reach Mars, which is 8.1x10^7km from Earth? (b) If it takes this radiation 1.2 s to reach the Moon, howfar (in m) is the Moon from Earth?arrow_forward(a) The distance to a star is approximately 4.94 ✕ 1018 m. If this star were to burn out today, in how many years would we see it disappear? years(b) How long does it take sunlight to reach Earth? minutes(c) How long does it take for a microwave radar signal to travel from Earth to the Moon and back? (The distance from Earth to the Moon is 3.84 ✕ 105 km.) sarrow_forwardIf a light wave has an electric field strength of 437.3 V/m, what is the magnetic field strength in a vacuum? Express your answer in micro Tesla ( uT =*10^ ^ -6) and to 3 decimal placesarrow_forward
- The AM radio band in a particular area has a frequency range of 554 kHz to 1620 kHz. How long is the wavelength of the radiation at the beginning of the range and how long is the wavelength of the radiation at the end of the range? Answer in units of m.arrow_forwardCompute the frequency (in MHz) of an EM wave with a wavelength of 4.6 in. (0.1168 m). Give your answer to four digits.arrow_forwardApproximately how long would it take an electrical signal (carried by an electromagnetic wave) to make a round trip from the Earth to the moon (the moon is 384 x 10³ km from the Earth)?arrow_forward
- (a) Approximately how long would it take a telephone signal to travel 2940 mi from coast to coast across the United States? (Telephone signals travel at about the speed of light.) (b) Approximately how long would it take a radio signal to reach the International Space Station (ISS) at an orbital altitude of 350 km?arrow_forward(a) The distance to a star is approximately 4.97 × 10¹8 m. If this star were to burn out today, in how many years would we see it disappear? years (b) How long does it take sunlight to reach Earth? minutes (c) How long does it take for a microwave radar signal to travel from Earth to the Moon and back? (The distance from Earth to the Moon is 3.84 x 105 km.) Sarrow_forwardThe team monitoring a space probe exploring the outer solar system finds that radio transmissions from the probe take 3.82 hours to reach earth. How distant in meters is the probe?arrow_forward
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