NASA is designing a mission to explore Titan, the largest moon of Saturn Titan has numerous hydrocarbon lakes containing a mix of liquid methane and liquid ethane in unknown proportions. As part of the mission, a small submersible vehicle will explore Kraken Mare, the largest of these lakes. Assuming the maximum depth of Kraken Mare is less than 400 meters [m], how much total pressure in units of atmospheres [atm] must the submersible be designed to withstand? Assume the surface pressure on Titan is 147 kilopascals [kPa], the surface temperature is 94 kelvins [K], and the gravity is 1.35 meters per second squared [m/s 2 ]. The specific gravity of liquid methane is 0.415 and the specific gravity of liquid ethane is 0.546.
NASA is designing a mission to explore Titan, the largest moon of Saturn Titan has numerous hydrocarbon lakes containing a mix of liquid methane and liquid ethane in unknown proportions. As part of the mission, a small submersible vehicle will explore Kraken Mare, the largest of these lakes. Assuming the maximum depth of Kraken Mare is less than 400 meters [m], how much total pressure in units of atmospheres [atm] must the submersible be designed to withstand? Assume the surface pressure on Titan is 147 kilopascals [kPa], the surface temperature is 94 kelvins [K], and the gravity is 1.35 meters per second squared [m/s 2 ]. The specific gravity of liquid methane is 0.415 and the specific gravity of liquid ethane is 0.546.
NASA is designing a mission to explore Titan, the largest moon of Saturn Titan has numerous hydrocarbon lakes containing a mix of liquid methane and liquid ethane in unknown proportions. As part of the mission, a small submersible vehicle will explore Kraken Mare, the largest of these lakes. Assuming the maximum depth of Kraken Mare is less than 400 meters [m], how much total pressure in units of atmospheres [atm] must the submersible be designed to withstand? Assume the surface pressure on Titan is 147 kilopascals [kPa], the surface temperature is 94 kelvins [K], and the gravity is 1.35 meters per second squared [m/s2]. The specific gravity of liquid methane is 0.415 and the specific gravity of liquid ethane is 0.546.
A given model of smartwatch worn by a diver is rated for 5 atm. If the diver swam downwards in a brackish lake with water density of 63 lbm/ft3, how deep [ft] will he reach before water starts entering the watch above the rated pressure specification? Assume that atmospheric pressure is equal to 14.5 psi.
2.
You have a large storage tank having 95 inches of ethylene glycol and 45 inches of
ethanol, one floating on top of the other. If the two liquids are not mixed, which one is
on top? Why? If the tank is enclosed and has a gas pressure (gage) at its top of 6 psi,
what is the pressure at the bottom of the tank (in psi)? [ethanol on top because it has a
lower density, P = 11.1 psi]
Revisit Example 6 from your Module 4 notes. Consider the well-insulated, rigid tank having a
volume of 10 [ft']. Previously, it contained saturated water vapor at 212°F at state 1. The water
was rapidly stirred until the pressure was 20 [lbfin'). In class we showed that the temperature at
state 2 was 445°F and the work done during this process was -31.3 (Btu].
Now, if insulation were removed from the tank, and the water is cooled at constant volume from
T2 = 445°F to T3= 300°F without stirring the water, determine:
a) The pressure at the state 3 in [Ibfin*), and
b) The heat transfer during the process in [Btu).
Chapter 8 Solutions
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
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8.01x - Lect 27 - Fluid Mechanics, Hydrostatics, Pascal's Principle, Atmosph. Pressure; Author: Lectures by Walter Lewin. They will make you ♥ Physics.;https://www.youtube.com/watch?v=O_HQklhIlwQ;License: Standard YouTube License, CC-BY