सभी निष्कर्ष सत्य है निष्कर्ष I , II , तथा IV सत्य है निष्कर्ष I , III , तथा IV सत्य है निष्कर्ष III तथा IV सत्य है Solution : (I ) `Z =1 to ` आदर्श व्यव्हार चेतावनी: इस टेक्स्ट में गलतियाँ हो सकती हैं। सॉफ्टवेर के द्वारा ऑडियो को टेक्स्ट में बदला गया है। ऑडियो सुन्ना चाहिये। बिहार के अध्ययन को एग्रोसटलॉजी का अध्ययन कहते हैं bihar ke adhyayan ko egrosatalaji ka adhyayan kehte hain बिहार के अध्ययन को एग्रोसटलॉजी का अध्ययन कहते हैं 9 This Question Also Answers: Vokal App bridges the knowledge gap in India in Indian languages by getting the best minds to answer questions of the common man. The Vokal App is available in 11 Indian languages. Users ask questions on 100s of topics related to love, life, career, politics, religion, sports, personal care etc. We have 1000s of experts from different walks of life answering questions on the Vokal App. People can also ask questions directly to experts apart from posting a question to the entire answering community. If you are an expert or are great at something, we invite you to join this knowledge sharing revolution and help India grow. Download the Vokal App! A subfield of fluid statics, aerostatics is the study of gases that are not in motion with respect to the coordinate system in which they are considered. The corresponding study of gases in motion is called aerodynamics. Aerostatics studies density allocation, especially in air. One of the applications of this is the barometric formula. An aerostat is a lighter than air craft, such as an airship or balloon, which uses the principles of aerostatics to float. Basic laws[edit]Treatment of the equations of gaseous behaviour at rest is generally taken, as in hydrostatics, to begin with a consideration of the general equations of momentum for fluid flow, which can be expressed as: ρ[∂Uj∂t+Ui∂Uj∂t]=−∂P∂xj−∂τij∂xi+ρgj{\displaystyle \rho [{\partial U_{j} \over \partial t}+U_{i}{\partial U_{j} \over \partial t}]=-{\partial P \over \partial x_{j}}-{\partial \tau _{ij} \over \partial x_{i}}+\rho g_{j}} where ρ{\displaystyle \rho } ∂P∂xj=ρgj{\displaystyle {\partial P \over \partial x_{j}}=\rho g_{j}} However, the presence of a non-constant density as is found in gaseous fluid systems (due to the compressibility of gases) requires the inclusion of the ideal gas law: Pρ=RT{\displaystyle {P \over \rho }=RT} where R{\displaystyle R} ∂P∂xj=ρgj^=P RTgj^{\displaystyle {\partial P \over \partial x_{j}}=\rho {\hat {g_{j}}}={P \over \ RT}{\hat {g_{j}}}} which can be employed to compute the pressure distribution in gases whose thermodynamic states are given by the equation of state for ideal gases.[1]: 183 |