The Cosmic Perspective (8th Edition)
8th Edition
ISBN: 9780134059068
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 4, Problem 3EAP
What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in the Space Station.
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You have negotiated with the Omicronians for a base on the planet Omicron Persei 7. The architects working with you to plan the base need to know the acceleration of a freely falling object at the surface of the planet in order to adequately design the structures. The Omicronians have told you that the value is gOP7=7.29 flurg/grom^2, but your architects use the units meters/second^2, and from your previous experience you know that both the Omicronians and your architects are terrible at unit conversion. Thus, it's up to you to do the unit conversion. Fortunately, you know the unit equality relationships: 5.24flurg=1meter and 1grom=0.493second. What is the value of gOP7 in the units your architects will use, in meter per second squared?
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Chapter 4 Solutions
The Cosmic Perspective (8th Edition)
Ch. 4 - Prob. 1VSCCh. 4 - Use the following questions to check your...Ch. 4 - Use the following questions to check your...Ch. 4 - Use the following questions to check your...Ch. 4 - Use the following questions to check your...Ch. 4 - Define speed, velocity, and acceleration. What are...Ch. 4 - Define momentum and force. What do we mean when we...Ch. 4 - What is free-fall, and why does it make you...Ch. 4 - Prob. 4EAPCh. 4 - Describe the laws of conservation of momentum, of...
Ch. 4 - Define kinetic energy, radiative energy, and...Ch. 4 - Define temperature and thermal energy. How are...Ch. 4 - Prob. 8EAPCh. 4 - 9. Summarize the universal law of gravitation both...Ch. 4 - 10. What is the difference between a bound and an...Ch. 4 - What do we need to know if we want to measure an...Ch. 4 - Explain why orbits cannot change spontaneously,...Ch. 4 - Explain how the Moon creates tides on Earth. Why...Ch. 4 - What is tidal friction? What effects does it have...Ch. 4 - Does It Make Sense?
Decide whether the statement...Ch. 4 - Does It Make Sense?
Decide whether the statement...Ch. 4 - Does It Make Sense?
Decide whether the statement...Ch. 4 - Does It Make Sense?
Decide whether the statement...Ch. 4 - Prob. 19EAPCh. 4 - Prob. 20EAPCh. 4 - Does It Make Sense? Decide whether the statement...Ch. 4 - Does It Make Sense?
Decide whether the statement...Ch. 4 - Does It Make Sense?
Decide whether the statement...Ch. 4 - Does It Make Sense?
Decide whether the statement...Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Prob. 30EAPCh. 4 - Prob. 31EAPCh. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Testing Gravity. Scientists are continually trying...Ch. 4 - Prob. 36EAPCh. 4 - Prob. 37EAPCh. 4 - 38. Weightlessness, Astronauts are weightless when...Ch. 4 - Prob. 39EAPCh. 4 - Gravitational Potential Energy. For each of the...Ch. 4 - Prob. 41EAPCh. 4 - Prob. 42EAPCh. 4 - Prob. 43EAPCh. 4 - Prob. 44EAPCh. 4 - Prob. 45EAPCh. 4 - Geostationary Orbit. A satellite in geostationary...Ch. 4 - Prob. 47EAPCh. 4 - Prob. 48EAPCh. 4 - Prob. 49EAPCh. 4 - Prob. 50EAPCh. 4 - Prob. 51EAPCh. 4 - Prob. 52EAPCh. 4 - Prob. 53EAPCh. 4 - Prob. 54EAPCh. 4 - Prob. 55EAPCh. 4 - Prob. 56EAPCh. 4 - Prob. 57EAPCh. 4 - Prob. 58EAPCh. 4 - Prob. 59EAPCh. 4 - Prob. 60EAPCh. 4 - Prob. 61EAPCh. 4 - Prob. 62EAP
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- What Do You Already Know About Rockets? Think about how spacecraft change course once they are in space. Do spacecraft use rocket thrusters to maneuver in space, or are rockets only used to launch the spacecraft?arrow_forwardWhat is a Worm Hole? How can we travel into the Worm Hole?arrow_forwardYou and three of your friends have won an all-expenses paid one-time-only round-trip first-class vacation to anywhere in the Universe, so long as the choice of destination is unanimous. Where do you want to go, and how do you convince your friends to agree?arrow_forward
- What is the escape velocity from the Sun? How much greater is it than the escape velocity from Earth?arrow_forwardSpacecraft have been sent to Mars in recent years. Mars is smaller than Earth and has correspondingly weaker surface gravity. On Mars, the free-fall acceleration is only 3.8 m/s². What is the orbital period of a spacecraft in a low orbit near the surface of Mars?arrow_forwardNew Horizons was launched by NASA lastJanuary 19, 2006 to a mission to the dwarfplanet Pluto. On July 15, 2015, it flew 12,500km above the surface of Pluto, making it thefirst successful spacecraft to explore the dwarfplanet. Explain how the gravity of Jupiterhelped New Horizons to propel faster to Pluto.arrow_forward
- What is the relationship between force, mass and acceleration? What is deceleration? What do you mean by one newton of force?arrow_forward1. using Newton’s Law of Universal Gravitation and some kinematics calculation we can calculate the mass of the planet. For this, use this equation below: ?planet =(9.340×1024)×(vmax)×(Pstar)1/3×(Mstar)2/3 Given: - vmax = 1.5 m/s - Pstar = 3.5 days - Mstar = 1.148 Msun, where Msun = 1.98847×1030 kg. This calculation is not shown.arrow_forwardWhat is a gravitational field, and how can its presence be detected?arrow_forward
- What is inertial mass? What are its characteristics?arrow_forwardIn 1993 the Galileo spacecraft sent home an image of asteroid "243 Ida" and a tiny moon "Dactyl" orbiting the asteroid. Assume that the small moon orbits in a circle with a radius of r = 100 km from the center of the asteroid with an orbital period of T = 27 hours. a. Show and explain how we derived Kepler's 3rd law using Newton's 2nd Law, the definition for centripetal acceleration, and the equation for gravitational force. b. Use your result for Kepler's 3rd Law to determine the mass of the asteroid. c. If the asteroid has a radius of about 16 km calculate the approximate value for the acceleration due to gravity, g, on its surface. d. What velocity would you need to achieve in order to lift off and leave this asteroid? e. Use Newton's 2nd Law, the definition for centripetal acceleration, and the equation for gravitational force to determine an expression for circular orbital velocity. f. What is the orbital velocity of the small moon if we assume it is in a circular orbit?arrow_forwardSince 1995, hundreds of extrasolar planets have been discovered. There is the exciting possibility that there is life on one or more of these planets. To support life similar to that on the Earth, the planet must have liquid water. For an Earth-like planet orbiting a star like the Sun, this requirement means that the planet must be within a habitable zone of 0.9 AU to 1.4 AU from the star. The semimajor axis of an extrasolar planet is inferred from its period. What range in periods corresponds to the habitable zone for an Earth-like Planet orbiting a Sun-like star?arrow_forward
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