Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 7, Problem 2PEB
To determine
The time required for reflected sunlight to travel from Moon to the Earth.
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(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.)
S
The speed of light is c = 3.0 x 10^8 m/s. If the distance between the Earth and the moon is d = 2.39 x 10^5 mi (1.0 mi = 1.61 km). You send a laser from the Earth to the moon and back. How long does this take?
A) Suppose a star is 4.15 ✕ 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?
Chapter 7 Solutions
Integrated Science
Ch. 7.1 - Prob. 1SCCh. 7.1 - Prob. 2SCCh. 7.1 - Prob. 3SCCh. 7.2 - Prob. 4SCCh. 7.2 - Prob. 5SCCh. 7.2 - Prob. 6SCCh. 7.2 - Prob. 7SCCh. 7.3 - Prob. 8SCCh. 7.3 - Prob. 9SCCh. 7.4 - Prob. 10SC
Ch. 7.4 - Prob. 11SCCh. 7.5 - Prob. 12SCCh. 7 - What determines if an electromagnetic wave emitted...Ch. 7 - Prob. 2CQCh. 7 - Prob. 3CQCh. 7 - Prob. 4CQCh. 7 - Prob. 5CQCh. 7 - Prob. 6CQCh. 7 - Prob. 7CQCh. 7 - Prob. 8CQCh. 7 - Prob. 9CQCh. 7 - Prob. 10CQCh. 7 - Prob. 11CQCh. 7 - Prob. 12CQCh. 7 - Prob. 13CQCh. 7 - Prob. 14CQCh. 7 - Prob. 15CQCh. 7 - Prob. 16CQCh. 7 - Prob. 17CQCh. 7 - Prob. 18CQCh. 7 - Prob. 1PEACh. 7 - Prob. 2PEACh. 7 - Prob. 3PEACh. 7 - Prob. 4PEACh. 7 - Prob. 5PEACh. 7 - Prob. 6PEACh. 7 - Prob. 7PEACh. 7 - Prob. 8PEACh. 7 - Prob. 9PEACh. 7 - Prob. 10PEACh. 7 - Prob. 1PEBCh. 7 - Prob. 2PEBCh. 7 - Prob. 3PEBCh. 7 - Prob. 4PEBCh. 7 - Prob. 5PEBCh. 7 - Prob. 6PEBCh. 7 - Prob. 7PEBCh. 7 - Prob. 8PEBCh. 7 - Prob. 9PEBCh. 7 - Prob. 10PEB
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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
- (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 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 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_forward
- The distance between the Earth and the Moon is 3.85 x108 m. During the Apollo 15 mission, astronaut David Scott was often communicating lunar findings from the Moon to the Earth. How much time did it take for his voice to reach the Houston via radio waves? 0.99 s 1.57 s 2.11 s 1.28 s 1.76 sarrow_forwardLight 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?arrow_forward(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_forward
- Distances in space are often quoted in units of light years, the distance light travels in one year (365.25 days). How many meters is a light year? Provide the solution: x 1015 marrow_forwardThe speed of light in a vacuum is 3 x 108 m/s. What is the ratio of its speed in water (n = 1.33) to its speed in a vacuum? Enter your answer as a percentagearrow_forwardAn astronomical unit (AU) is equal to the average distance from Earth to the Sun, about 92.9 × 106 mi. A parsec (pc) is the distance at which a length of 1 AU would subtend an angle of exactly 1 second of arc (the figure). A light-year (ly) is the distance that light, traveling through a vacuum with a speed of 186000 mi/s, would cover in 1.0 year. Express the Earth–Sun distance in (a) parsecs and (b) light-years.arrow_forward
- A group of hikers uses a GPS while doing a 40-mile trek in Colorado. A curve fit to the data shows that their altitude can be approximated by the function y(t)=0.12t5−6.75t4+135t3−1120t2+3200t+9060 where y and t are expressed in feet and hours, respectively. During the 18-hour hike, determine the maximum altitude that the hikers reach.arrow_forward(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_forwardA special black material absorbs all light incident upon it. An intense laser beam shines straight up onto a horizontally flat object made out of this material. If the object has an area of 1.0 m² and a mass of 1.0 kg, how much power does the laser need to generate in order to accelerate it upward at a rate that is two times the freefall acceleration of gravity, 2g?arrow_forward
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