Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 14, Problem 7PEA
To determine
The distance of the moon at perigee.
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Light in a vacuum travels at a constant speed of 3x108 m/s. If the Moon's average distance from the Earth is 38234,601 km, how long would it take for a beam of light to travel from the Earth, to the Moon, and back to the Earth again?
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Chapter 14 Solutions
Integrated Science
Ch. 14.2 - In about twelve thousand years, the star Vega will...Ch. 14.3 - Prob. 2SCCh. 14.3 - Prob. 3SCCh. 14.3 - Prob. 4SCCh. 14.3 - Prob. 5SCCh. 14.3 - Prob. 6SCCh. 14.3 - Prob. 7SCCh. 14.4 - Prob. 8SCCh. 14.4 - Prob. 9SCCh. 14.4 - Prob. 10SC
Ch. 14.4 - Prob. 11SCCh. 14.4 - The smallest range between high and low tides...Ch. 14 - Prob. 1CQCh. 14 - Where on Earth are you if you observe the...Ch. 14 - Prob. 3CQCh. 14 - Prob. 4CQCh. 14 - Prob. 5CQCh. 14 - Prob. 6CQCh. 14 - Prob. 7CQCh. 14 - Prob. 8CQCh. 14 - Prob. 9CQCh. 14 - Prob. 10CQCh. 14 - Prob. 11CQCh. 14 - Prob. 12CQCh. 14 - If you were on the Moon as people on Earth...Ch. 14 - Prob. 14CQCh. 14 - Prob. 15CQCh. 14 - Prob. 16CQCh. 14 - Prob. 17CQCh. 14 - Identity the moon phases that occur with (a) a...Ch. 14 - Prob. 19CQCh. 14 - Prob. 20CQCh. 14 - Prob. 21CQCh. 14 - Prob. 22CQCh. 14 - Prob. 23CQCh. 14 - Prob. 24CQCh. 14 - Prob. 1PEACh. 14 - Prob. 2PEACh. 14 - Prob. 3PEACh. 14 - Prob. 4PEACh. 14 - Prob. 5PEACh. 14 - Prob. 6PEACh. 14 - Prob. 7PEACh. 14 - Prob. 1PEBCh. 14 - Prob. 2PEBCh. 14 - Prob. 3PEBCh. 14 - Prob. 4PEBCh. 14 - Prob. 5PEBCh. 14 - Prob. 6PEBCh. 14 - Prob. 7PEB
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- (a) The distance to a star is approximately 5.50 × 10¹8 m. If this star were to burn out today, in how many years would we see it disappear? 581.35 years (b) How long does it take sunlight to reach Earth? 8.33 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.) X 1.28 Your response differs from the correct answer by more than 10%. Double check your calculations. Sarrow_forwardHow much time is required for reflected sunlight to travel from the moon to the earth if the distance between the moon and the earth is 3.95 x 10^5 km?arrow_forwardHow long will it take, for the sunlight to reach the earth surface, if the sun is 1.497 x 10"m away from the earth? (Consider the speed of light in vacuum)arrow_forward
- An astronomer points a laser at an asteroid and measures the length of time until the reflected beam is detected on Earth as 17.13 min. How far away (in meters) is the asteroid from the astronomer's location on the surface of the Earth?arrow_forwardThe angle of incidence on a light ray on a mirrored surface is 20∘∘. What is the angle between the reflected ray and the incident ray?arrow_forwardHow long does it take in units of minutes for a beam of light to travel from Earth to Jupiter's moon Io, a total distance of 1278.7 x 106 km?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_forwardHow far does light travel in one year? [This distance is known as a light-year (ly) and is used in measuring astronomical distances.] I think the answer might have to be in scientific notationn formarrow_forwardAn anstonomer on a planet orbiting the star Deneb wants to differentiate the reflected light by Earth from the light of the Sun. First, consider the area of Earths disk which reflects the Sun's intercepted light. Second, consider the surface area of a sphere with the same radius as Earths orbit around the Sun. Take the ratio of these two areas. Assume the Earths radius is 6400.0 km and is 1.3 x108 km from the Sun.arrow_forward
- When the sun is either rising or setting and appears to be just on the horizon, it is in fact below the horizon. The explanation for this seeming paradox is that light from the sun bends slightly when entering the earth’s atmosphere, as shown in Fig. Since our perception is based on the idea that light travels in straight lines, we perceive the light to be coming from an apparent position that is an angle d above the sun’s true position. (a) Make the simplifying assumptions that the atmosphere has uniform density, and hence uniform index of refraction n, and extends to a height h above the earth’s surface, at which point it abruptly stops. Show that the angle d is given by as attached. where R = 6378 km is the radius of the earth. (b) Calculate d using n = 1.0003 and h = 20 km. How does this compare to the angular radius of the sun, which is about one quarter of a degree? (In actuality a light ray from the sun bends gradually, not abruptly, since the density and refractive index of the…arrow_forwardA beam of light is directed toward the surface of a block of zircon at an angle of 29.0° with respect to the normal (a line perpendicular to the surface at the spot where the ray hits the block). Part of the light is reflected and the rest refracted. What is the angle (in degrees) between the reflected and refracted beams?arrow_forwardA beam of light is directed toward the surface of a block of fused quartz at an angle of 28.0° with respect to the normal (a line perpendicular to the surface at the spot where the ray hits the block). A fraction of the light is reflected and the rest refracted. What is the angle (in degrees) between the reflected and refracted beams?arrow_forward
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