Which are examples of closed systems? Water boiling in a tea kettle fuel/air mix

Question

Which are examples of closed systems? Water boiling in a tea kettle fuel/air mixture in an internal combustion engine during the combustion event a communications satellite in high earth orbit a mountain biker and her bike climbing Moscow Mountain Which of the following are true about gc? gc does not have dimensions in the SI system gc is 32.174 Ibm-ft/Ibf-s^2 on earth gc varies depending on what celestial body on which you are located gc is a correction factor that insures Newton's 2^nd Law an exact equality Which of the following are true of intensive properties? these are always indicated by capital letter these depend on the amount of substance present these often have the word 'specific' in the name of the property two of these can specify a thermodynamic state of a simple homogeneous substance What conditions need to exist to apply the ideal gas law? particles should be in a gaseous state inter-molecular forces between particles should be negligible temperature

Explanation / Answer

>> 3-A

>> As, in Closed System, only energy transfer takes place between system and surroundings,

>> So, option is (b) , (c) and (d)

>> 3-B

>> option is (b) and (d)

>> 3-C

>> As, intensive properties are those properties, which are independent of mass and these are always indicated by capital letters

>> So, option is (a) and (c), because specific property means, propert per mass,i.e. independent of mass.

>> 3-D

>> For ideal Gas Law, inter-molecular forces between particles should be negligible,

and, pressure should be less and temperature should be high..

>> So, ANSWER is option (d) and (b)

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