Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 9, Problem 44QAP
To determine
The probability that a person get struck by a meteorite during
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The Tunguska asteroid is estimated to have had a diameter of 50 m, and to have produced an explosion equivalent to 10 megatons of TNT (1 megaton = 4.2 x 1015 joules). Assume that the asteroid was a sphere with density 2 g/cm3. Using the kinetic energy formula K = ½ mv2, where m is the mass and v is the speed, to estimate the speed of the asteroid. Assume that all kinetic energy is converted into the energy of the explosion.
Give your answer in km/s with one significant figure.
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A submersible robot is exploring one of the methane seas on Titan, Saturn's largest moon. It discovers a number of small spherical structures on the bottom of the sea at depth of 10 meters [m], and selects one for analysis. The sphere selected has a volume of 1.9 cubic centimeters [cm3] and a density of 2.25 grams per cubic centimeter [g/cm3]. When the rock is returned to Earth for analysis, what is the weight of the sphere in newtons [N]? Gravity on Titan is 1.352 meters per second squared [m/s2]. The density of methane is 0.712 grams per liter [g/L]
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Chapter 9 Solutions
Understanding Our Universe
Ch. 9.1 - Prob. 9.1CYUCh. 9.2 - Prob. 9.2CYUCh. 9.3 - Prob. 9.3CYUCh. 9.4 - Prob. 9.4CYUCh. 9.5 - Prob. 9.5CYUCh. 9.6 - Prob. 9.6CYUCh. 9 - Prob. 1QAPCh. 9 - Prob. 2QAPCh. 9 - Prob. 3QAPCh. 9 - Prob. 4QAP
Ch. 9 - Prob. 5QAPCh. 9 - Prob. 6QAPCh. 9 - Prob. 7QAPCh. 9 - Prob. 8QAPCh. 9 - Prob. 9QAPCh. 9 - Prob. 10QAPCh. 9 - Prob. 11QAPCh. 9 - Prob. 12QAPCh. 9 - Prob. 13QAPCh. 9 - Prob. 14QAPCh. 9 - Prob. 15QAPCh. 9 - Prob. 16QAPCh. 9 - Prob. 17QAPCh. 9 - Prob. 18QAPCh. 9 - Prob. 19QAPCh. 9 - Prob. 20QAPCh. 9 - Prob. 21QAPCh. 9 - Prob. 22QAPCh. 9 - Prob. 23QAPCh. 9 - Prob. 24QAPCh. 9 - Prob. 25QAPCh. 9 - Prob. 26QAPCh. 9 - Prob. 27QAPCh. 9 - Prob. 28QAPCh. 9 - Prob. 29QAPCh. 9 - Prob. 30QAPCh. 9 - Prob. 31QAPCh. 9 - Prob. 32QAPCh. 9 - Prob. 33QAPCh. 9 - Prob. 34QAPCh. 9 - Prob. 35QAPCh. 9 - Prob. 36QAPCh. 9 - Prob. 37QAPCh. 9 - Prob. 38QAPCh. 9 - Prob. 39QAPCh. 9 - Prob. 40QAPCh. 9 - Prob. 41QAPCh. 9 - Prob. 42QAPCh. 9 - Prob. 43QAPCh. 9 - Prob. 44QAPCh. 9 - Prob. 45QAP
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- The Roche limit is the closest distance an object can approach a planet before being torn apart by the tidal attraction of the planet. For a rigid spherical moon the Roche limit is given by Eq. (6) in Box 2.1. (a) Using the planetary dimensions in Table 1.1, cal- culate the Roche limit for the Moon with respect to the Earth. Express the answer as a multiple of the Earth's radius.arrow_forwardA small hole in the wing of a space shuttle requires a 20.7-cm2 patch. (a) What is the patch’s area in square kilometers (km2)? (b) If the patching material costs NASA $3.25/in2, what is the cost of the patch?arrow_forwardWhat is the value of the IR transmission factor (f) for a Venus-like planet, if the measured average surface temperature is 706 K? Assume the following values for the planet: E, = 2.60x10³ W m² and a = 0.71. Would the average temperature increase or decrease if f decreased?arrow_forward
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