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 51IF
Cruise Ship Energy. Suppose we have a spaceship about the size of a typical ocean cruise ship today, which means it has a mass of about 100 million kilograms, and we want to accelerate the ship to a speed of 10% of the
- a. How much 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 the formula that tells us that kinetic energy =
- b. How does your answer compare to total world energy use at present, which is about 5 × 1020 joules per year?
- c. Suppose the cost of energy is 3¢ per 1 million joules. At this price, how much would it cost to generate the energy needed by this spaceship?
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Suppose a spaceship of length L, is traveling at a high rate of speed v relative to an observer. To the observer, the ship appears to have a smaller length given by the following formula.
L=L/1-
where c is the speed of light
Complete the parts (a) through (d).
(a) What is the observed length L of the ship if it is traveling at 50% of the speed of light? Choose the correct answer below.
O B. L=0
V5
OA L=
OD. L=0
OC
(b) What is the observed length L of the ship if it is traveling at 75% of the speed of light?
O B. L=0
OA. L-
OD. L-L
OC. L=
(c) In parts (a) and (b). what happens to L as the speed of the ship increases? Choose the correct answer below.
Multiple choice, Write the letter of your answer. This is all about General Physics 1: Conservation of ME.
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?
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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