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Scuba Gear Mini | Inch 04
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Terms in this set (25)
fin
Flosse
buoyancy
Auftrieb
wet suit
Nasstauchanzug
dive, to
tauchen
scuba gear
Tauchausrüstung
weight belt
Bleigurt
regulator
Atemregler
decompression
Dekompression
pressure
Druck
depth gauge
Tiefenmesser
diving cylinder
Druckluftflasche
booty
Füßling
mouthpiece
Mundstück
valve
Ventil
compressor
Kompressor
breathing apparatus
Lungenautomat
diving mask
Tauchmaske
mixed gas
Mischgas
dry suit
Trockentauchanzug
emergency ascent
Notaufstieg
rebreather
Kreislauftauchgerät
buoyancy control device (BCD)
Tarierweste
snorkel
Schnorchel
nitrogen
Stickstoff
dive computer
Tauchcomputer
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Verified questions
ENGINEERING
Consider two identical people each generating 60 W of metabolic heat steadily while doing sedentary work and dissipating it by convection and perspiration. The first person is wearing clothes made of 1-mm-thick leather $(k = 0.159 \mathrm{W} / \mathrm{m} \cdot \mathrm{K})$ that covers half of the body while the second one is wearing clothes made of 1-mm-thick synthetic fabric $(k=0.13 \mathrm{W} / \mathrm{m} \cdot \mathrm{K})$ that covers the body completely. The ambient air is at $30^{\circ} \mathrm{C},$ the heat transfer coefficient at the outer surface is $15 \mathrm{W} / \mathrm{m}^{2} \cdot \mathrm{K},$ and the inner surface temperature of the clothes can be taken to be $32^{\circ} \mathrm{C}.$ Treating the body of each person as a 25-cm-diameter, 1.7-m-long cylinder, determine the fractions of heat lost from each person by perspiration.
ENGINEERING
A 2-lb weight is suspended from a spring having a stiffness k = 2 lb/in. If the weight is pushed 1 in. upward from its equilibrium position and then released from rest, determine the equation which describes the motion. What is the amplitude and the natural frequency of the vibration?
ENGINEERING
Determine the highest possible temperature that can be obtained when liquid gasoline (assumed $\left.\mathrm{C}_{8} \mathrm{H}_{18}\right)$ at $25^{\circ} \mathrm{C}$ is burned steadily with air at $25^{\circ} \mathrm{C}$ and 1 atm. What would your answer be if pure oxygen at $25^{\circ} \mathrm{C}$ were used to burn the fuel instead of air?
ENGINEERING
Consider a carton of milk that is refrigerated at a temperature of $T_{m}=5^{\circ} \mathrm{C}$. The kitchen temperature on a hot summer day is $T_{\infty}=30^{\circ} \mathrm{C}$. If the four sides of the carton are of height and width L=200 mm and w=100 mm, respectively, determine the heat transferred to the milk carton as it sits on the kitchen counter for durations of t=10 s, 60 s, and 300 s before it is returned to the refrigerator. The convection coefficient associated with natural convection on the sides of the carton is h=10 $\mathrm{W} / \mathrm{m}^{2} \cdot \mathrm{K}$. The surface emissivity is 0.90. Assume the milk carton temperature remains at $5^{\circ} \mathrm{C}$ during the process. Your parents have taught you the importance of refrigerating certain foods from the food safety perspective. Comment on the importance of quickly returning the milk carton to the refrigerator from an energy conservation point of view.
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