A 5-m-diameter balloon contains helium at 125 kPaabsolute and 15 ° C, moored in sea-level standard air. If thegas constant of helium is 2077 m 2 /(s 2 · K) and balloonmaterial weight is neglected, what is the net lifting force ofthe balloon?( a ) 67 N, ( b ) 134 N, ( c ) 522 N, ( d ) 653 N, ( e ) 787 N

Q: A piston cylinder arrangement is connected to the manometer system as shown in the figure. The local…

A:

Q: A compressed air tank is designed to contain 50 standard cubic feet of air when filled to a gauge…

A: Given data Interior volume of the tank = 0.253 ft3 Interior length of cylinder = 1 ft We have to…

Q: 2000 cc. of air takes 12 minutes to pass through a standard specimen of sand (5.08 cm high and 5.08…

A: Option d is correct.

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A: This question is based on the concept of Statics fluid mechanics.

Q: Find the unit weight of helium at a temperature of 5 °C and a pressure of 174 kPa gage, if…

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A:

Q: Carbon dioxide has a specifi c heat ratio of 1.30 and a gasconstant of 189 J/(kg ∙ ° C). If its…

A: Given: The specific heat ratio of the gas is n=1.30. The gas constant is R=189 J/kg-°C. The initial…

Q: 21) The tank in Fig.1 is closed at top and contains air at pressure PA. Calculate The value of PA of…

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Q: On October 21, 2001, Ian Ashpole of the United Kingdom achieved a record altitude of 3.35 km (11,000…

A: Given data: Height of balloon, h = 3.5 km (11000 ft). The number of balloons, n = 600. The radius…

Q: An average adult has a mass of 81 kg, knowing that the average human density is very close to that…

A: Write the given values with the suitable variables. m=81 kgρ=1000 kg/m3sg=1.263 Here, m is the mass…

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.