What is the temperature of the Sun (google for the answer)? What is the re-entry temperature of the Space Shuttle (google for the answer)? Why don’t you burn up at the reentry temperature of 17318.5K for this Mach 20 flow? Why do you think that the body should actually re-enter the Earth's atmosphere in the opposite direction. (ie.. blunt/flat surface first.)

What is the temperature of the Sun (google for the answer)? What is the re-entry temperature of the Space Shuttle (google for the answer)? Why don’t you burn up at the reentry temperature of 17318.5K for this Mach 20 flow? Why do you think that the body should actually re-enter the Earth's atmosphere in the opposite direction. (ie.. blunt/flat surface first.)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter10: Thermal Physics

Section: Chapter Questions

Problem 57AP

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Imagine that you have air in a sealed glass container that has a volume of 1 liter. The pressure inside the container is 1013 hPa and the temperature is 20◦C. You now inject cloud droplets into the chamber without letting any air leak out. The droplets have a radius of 10 micrometers, and you inject a concentration of drops that is typical of what you find in a cloud (200 drops per cm3). Will there be a change in the gas pressure? If so, by what amount? Please provide a calculation. What does your answer tell you about the presence of particles in the atmosphere and their potential influence on pressure?
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The average temperature of the atmosphere has increased by 0.4°C over the last thirty years. Estimate how much energy has gone into warming up the planet in this way. Keep in mind that the atmosphere has a mass of 5 × 1018kg, and the specific heat capacity of air is about 1 Jg−1K−1. How do we get to this answer (2×1021J)
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You may have experienced that wet cloth dries and water in the glass evaporates at room temperature. Now, we are going to calculate how fast the water in a cup is evaporating using the Maxwell-Boltzmann equation. We need to provide 40,660 Joules for one mole (~6 x 1023 molecules or 18 grams) of water to evaporate at room temperature. One mole of water is contained in a wide and shallow cylinder. The number of water molecules exposed to the air on the water surface is 5 x 1018. How much energy is needed for a single water molecule to evaporate (liquid phase turning to gas phase)? Calculate the probability of water molecule at the surface of water escape to air by its random vibration motion. If the molecules on the surface vibrates at frequency of 3 x 107 Hertz, how many molecules are escaping from the water surface for one second. Assuming water molecules in the air do not condensate (do not return back to water) because they are efficiently removed away by a mild wind, calculate the…
Not only is liquid nitrogen a cheaper coolant than liquid helium, its boiling point is higher (77 K vs. 4.2 K). How does higher temperature help lower the cost of cooling a material? Explain in terms of the rate of heat transfer being related to the temperature difference between the sample and its surroundings.
Nuclear scientists have determined that a fourth state of matter exists: plasma. The state of plasma is reached when matter acquires a temperature so high that some of the molecules and atoms are broken down into ions and electrons. Stellar and interstellar matter mostly occur as forms of plasma. On Earth, plasma exists in the ionosphere, in flames, and in chemical and nuclear explosions. Matter in a controlled thermonuclear reactor also exists in a plasma state. Plasma is most like a gas. However, it differs from un-ionized gas in that it is a good conductor of electricity and heat. Scientists hope to understand the occurrence of plasma in nature and to harness it as an inexpensive energy source. 26. Based on the passage, how can the cost of developing thermonuclear power with plasma be defended? A. It is applicable to all technologies. B. A plasma power source can be used without special equipment. C. It can provide an inexpensive power source. bagga bniy D. It is almost perfected…
How is the distance from the sun for planets in our solar system related to the mean temperature of each planet? To find out, a scatterplot that relates the natural log of the distance of each planet (including Pluto) from the sun in millions of miles and the natural log of the mean planetary temperature in Kelvin was created. In(Temperature) vs. In(Distance) 6.8 6.6 6.4 6.2 6 5.8 5.6 5.4 5.2 4.8 4.6 4.4 4.2 4 4 6 7 8. In(Distance) Predictor Coef 7.9009 SE Coef P Conatant 0.4381 18.03 0.000 In Distance -0.4536 0.0706 -6.42 0.004 s = 0.3446 R-Sq = 85.5 R-8q (adj) = 83.2% Based on the scatterplot and computer output, a reasonable estimate of mean temperature in Kelvin for Saturn, which is 886.7 million miles away from the sun is: O 4.822 degrees Kelvin because ý = -0.4536(In 886.7) + 7.9009 = 4.822. O 124.2 degrees Kelvin because in y = -0,4536(in 886,7) + 7.9009 =4,822 and e4.822 = 124.2. O 709.0 degrees Kelvin because In y = - 0.4536(log 886.7) + 7.9009 =6.564 and e6.564 = 709.0. O…
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