Life in the Universe (4th Edition)
4th Edition
ISBN: 9780134089089
Author: Jeffrey O. Bennett, Seth Shostak
Publisher: PEARSON
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Chapter 13, Problem 21TYU
To determine
If it is possible for a teenager to build a rocket that uses coal as its fuel and travel at the half the
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Read the Blitzer Bonus attached herewith. The future is now: You have the opportunity to explore the cosmos in a starship traveling near the speed of light. The experience will enable you to understand the mysteries of the universe in deeply personal ways, transporting you to unimagined levels of knowing and being. The downside: You return from your two-year journey to a futuristic world in which friends and loved ones are long gone. Do you explore space or stay here on Earth? What are the reasons for your choice?
Can you please solve question number 2 explaining step by step, on a picture please.
Just post the picture of how you did it please, DON'T TYPE IT ON THE WEBSITE.
Thanks.
The law of conservation of energy states that energy can be converted from one form to another but cannot be created or destroyed. Therefore, the amount of energy in the universe is constant.
In your initial post to the discussion, respond to the following prompts:
What do you think would happen if energy were not conserved?
Think of (and share) two scenarios in which our lives would be drastically altered if this law of conservation was not in place. At least one of your scenarios should be at the molecular level.
Would the implications be positive? Negative? Explain.
Chapter 13 Solutions
Life in the Universe (4th Edition)
Ch. 13 - Prob. 1RQCh. 13 - How does the speed of light affect the possibility...Ch. 13 - Prob. 3RQCh. 13 - Prob. 4RQCh. 13 - What is the rocket equation used for? Based on the...Ch. 13 - Prob. 6RQCh. 13 - Discuss a few ways of reaching the stars (other...Ch. 13 - How would time dilation affect space travel at...Ch. 13 - Prob. 9RQCh. 13 - What is the Fermi paradox? What two seemingly...
Ch. 13 - Why does it seem that other civilizations, if they...Ch. 13 - What arc Von Neumann machines? How do they affect...Ch. 13 - Describe the coral model of galactic colonization....Ch. 13 - Briefly discuss possible motives for galactic...Ch. 13 - Summarize the three general categories of possible...Ch. 13 - Briefly discuss the profound implications of the...Ch. 13 - What known problems were solved when Einstein...Ch. 13 - Prob. 18RQCh. 13 - Besides the idea that you cannot reach the speed...Ch. 13 - Prob. 20RQCh. 13 - Prob. 21TYUCh. 13 - Prob. 22TYUCh. 13 - Each of the following describes some futuristic...Ch. 13 - Prob. 24TYUCh. 13 - Prob. 25TYUCh. 13 - Prob. 26TYUCh. 13 - Prob. 27TYUCh. 13 - Prob. 28TYUCh. 13 - Prob. 29TYUCh. 13 - Prob. 30TYUCh. 13 - Prob. 31TYUCh. 13 - The amount of energy that would be needed to...Ch. 13 - The rocket engines of our current spacecraft are...Ch. 13 - Suppose that a spaceship was launched in the year...Ch. 13 - Prob. 35TYUCh. 13 - Prob. 36TYUCh. 13 - Which of the following questions best represents...Ch. 13 - Prob. 38TYUCh. 13 - Which of the following is not relative in the...Ch. 13 - Prob. 40TYUCh. 13 - Prob. 41POSCh. 13 - Prob. 42POSCh. 13 - Prob. 44IFCh. 13 - What's Wrong with This Picture? Many science...Ch. 13 - Large Rockets. Suppose we built a rocket that...Ch. 13 - Prob. 47IFCh. 13 - Solution to the Fermi Paradox. Among the various...Ch. 13 - Prob. 50IFCh. 13 - Cruise Ship Energy. Suppose we have a spaceship...Ch. 13 - Prob. 52IFCh. 13 - The Multistage Rocket Equation. The rocket...Ch. 13 - Relativistic Time Dilation. Use the time dilation...Ch. 13 - Testing Relativity. A + meson produced at rest has...Ch. 13 - Prob. 57IFCh. 13 - Prob. 58IFCh. 13 - Prob. 59IFCh. 13 - Prob. 60IFCh. 13 - The Turning Point. Discuss the idea that the...
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- Cruise Ship Enery. Suppose we have a spaceship about the size of a typical ocean cruise ship today, which means it has a mass of about l00 million kilograms, and we want to accelerate the ship to a speed of 10% of the speed of light. a. How Inuch energy would be required? (Hint; You can find the answer simply by calculating the kinetic energy of the ship when it reaches its cruising speed; because 10% of the speed of light is still small compared to the speed of light, you can use thsi formula kinetic energy = 1/2 x m x v2) b. How does your answer coInpare to total world energy use 5 x 1022 Joules? c. The typical cost of energy today is roughly 5¢ per 1 million joules. At this price, how much would it cost to generate the energy needed by this spaceship?arrow_forwardHow do we define the time interval of one "second" now, and keep track of elapsed time accurately enough to navigate spacecraft through the solar system, or place you on Earth with a GPS receiver? What place in space is our absolute reference point from which we measure distances in physics? If I climb a ladder more than a few feet I am clearly in danger if I fall. Being foolish, I think I can react fast enough to not hit the ground hard if I have more than 1 second to react. How high would that be when a fall to the ground takes 1 second? Hint: The distance of fall is (1/2) a t2, where a is the acceleration of a falling body and near Earth it is about 10 m/s2 for anything.arrow_forwardIdentify Einstein's two postulates for the Special Theory of Relativity and include evidence that supports them. Include a diagram and relevant physics terminology in your answer.arrow_forward
- Suppose astronomers found evidence of an earth-like planet 20 lightyears away. a) what may be two ethical considerations that one may consider when deciding if humans should travel to this planet? b) how fast would a spaceship need to travel if the roundtrip can no take longer than 40 years for the astronauts? c) how much time will the trip take according to the people on earth?arrow_forwardChoose one practical example or interesting phenomenon associated with the special or general theories of relativity discussed in your text. Give a brief description of your choice and explain how the relativity theories allow us to better understand the the associated observations.arrow_forwardIn an intergalactic competition, spaceship pilots compete to see who can cover the distance between two asteroids in the shortest time. The judges are at rest with respect to the two asteroids. From the judges’ point of view, a pilot has covered the 3-millionkm course in 20 seconds. From the pilots’ point of view,A. The course is longer than 3 million km, the time longer than 20 seconds.B. The course is longer than 3 million km, the time shorter than 20 seconds.C. The course is shorter than 3 million km, the time longer than 20 seconds.D. The course is shorter than 3 million km, the time shorter than 20 seconds.arrow_forward
- Imagine that it were possible to construct a combination spacecraft and time machine, for the purpose of visiting various parts of the solar system in the distant past and future. If you and a friend had such a thing, and your friend said "let's go stand on the surface of the Earth during the accretion phase of its early history", why might that not be a good idea? Group of answer choices The Earth would be so barren and inactive, with virtually no atmosphere and nothing happening on its surface, that you wouldn't find any resources to survive. This phase happened shortly after the Moon formed, so the Earth's surface might still be hot after the Moon-forming impact. During the Earth's accretion phase, there were many hazardous life forms on its surface, such as dinosaurs and other potentially predatory animals. Many asteroids and meteoroids would be impacting the surface of the Earth, as they built up the planet. PreviousNextarrow_forwardI'm having trouble understanding this. Suppose we have a spaceship about the size of a typical ocean cruise ship today, which means it has a mass of about 130 million kilograms, and we want to accelerate the ship to a speed of 12 % of the speed of light. Suppose you want to generate the energy to get it to cruising speed using matter-antimatter annihilation. How much antimatter would you need to produce and take on the ship? Express your answer using two significant figures.arrow_forwardPart I. We will leam in this class that the distance from the Earth to the Sun is approximately 1AU = 150,000,000 kilometers. a. Convert this number to meters (1 kilometer = 10° meters) and express it using scientific notation: 150000000000 meters How else might you express this number? (Millions, billions, etc. ?) b. A car on the highway drives at 55 mph = 25 meters per second. How long would it take to drive to the Sun? (Assuming you have a car that works in outer space.) Use the equation distance = velocity x time, or time = distance / velocity. Time = distance/velocity = , seconds (don't forget to use scientific notation.) How many days?. _days How many years?. years Does the answer surprise you?arrow_forward
- Give four ways to see Einstein's Theory of Relativity in real life. Provide a brief explanation of each and how these impact the life of humans.arrow_forwardClassify each of the following statements as ahypothesis, law, or theory. (a) The force acting onan object is equal to its mass times its acceleration.(b) The universe as we know it started with a big bang.(c) There are many civilizations more advanced thanours on other planets.arrow_forwardMultiple choice, Write the letter of your answer. This is all about General Physics 1: Conservation of ME.arrow_forward
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