Show that Titan's surface gravity is about one-seventh that of Earth's.
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- Mass drivers might be used for all of the following purposes EXCEPT as a launch system for getting raw material off of the lunar surface as a means of propelling a spacecraft as a means of propelling asteroids away from potential collision courses with Earth as a launch system for sending astronauts into Low Eath orbitWhy is there no atmosphere on moon?What creates the Earth's magnetic field? the moon the liquid iron/nickel core the atmosphere the solid inner core
- Calculate the force of gravity that would act on an astronaut with a mass of 103 kg on the surface of MarsWhat are the conditions necessary for a terrestrial planet to have a strong magnetic field? A molten metallic core only Fast rotation only A rocky mantel only Both a molten metallic core and fairly fast rotation Both a molten metallic core and a rocky mantleThe Moon's mass is 1/80 that of Earth, and the lunar radius is 1/4 Earth's radius. Based on these figures, calculate the total weight on the Moon of a 100-kg astronaut with a 50-kg space- suit and backpack, relative to his or her weight on Earth.
- What is the difference between tidal volume and vital capacity? Suggest a way you could measure a person’s tidal volume.Evidence exists that Mars may have had oceans 0.500 km deep in its early history. We don't know what the atmospheric pressure on Mars was back then, but some studies suggest it may have been as high as 50,000 Pa. What would have been the highest pressure at the bottom of these oceans? Density of water is 1000 kg/m³, gmars = 3.71 m/s².Assume that a planet will have lost its initial atmosphere by the present time if the average molecular speed exceeds one-sixth of the escape speed. What would Mercury's mass have to be in order for it to still have a nitrogen atmosphere? The molecular weight of nitrogen is 28.