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CBSE Class 11-science Answered

What kind of process is the ejection of fuels from a space ship?
Asked by HARSHITA JHA | 08 Jan, 2015, 01:06: AM
answered-by-expert Expert Answer
The ejection of fuels from a spaceship is a type of IRREVERSIBLE process.
The fuel once burnt cannot be converted back to fuel.
It works in accordance with the second law of thermodynamics. It tells that no matter how efficient an engine is, there will always be some loss of heat. So, the process will always be irreversible.
Answered by Romal Bhansali | 08 Jan, 2015, 11:58: AM

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CBSE 11-science - Physics
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what is thermodynamics
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CBSE 11-science - Physics
Why mass increases with increase in temperature ? Explian in detail please
Asked by govtsecschoolnayaganv051 | 14 Dec, 2018, 07:19: PM
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CBSE 11-science - Physics
(a) Write the isothermal relation between pressure and volume. (b) Write an expression for work done during isothermal change.
Asked by Topperlearning User | 17 Apr, 2015, 10:09: AM
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CBSE 11-science - Physics
(a) Write an adiabatic relation between pressure and volume. (b) Write an adiabatic relation between: (i) Volume and temperature (ii) Pressure and temperature
Asked by Topperlearning User | 17 Apr, 2015, 10:11: AM
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CBSE 11-science - Physics
<div>Q)<img src="https://images.topperlearning.com/topper/tinymce/imagemanager/files/856cf5e4fb2a1bb3437198fd7eeaaf2858cb4d21c7be24.96348483ScreenShot20170317at8.11.09am.png" alt="" /></div>
Asked by araima2001 | 17 Mar, 2017, 08:12: AM
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CBSE 11-science - Physics
<div>The volume of an ideal gas is V at pressure P. On increasing the pressure by&nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=26816d2f3387562091ce3d0b42130299.png" alt="increment P" align="middle" />, the change in volume of the gas is&nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=0e068781bc829d936d54d5fffecd1d08.png" alt="increment V subscript 1" align="middle" />&nbsp;under isothermal conditions &amp;&nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=03ae4ab69fed6c91e7c4c18bf63c7315.png" alt="increment V subscript 2" align="middle" />&nbsp;under adiabatic conditions. Which one is greater&nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=ad72593b611ba84f5684c6f13ab3a7dc.png" alt="increment V subscript 1 space end subscript space o r space increment V subscript 2" align="middle" />? Explain with reason. If we open the door of a refrigerator in a closed room, the room does not get cooled. Why?</div>
Asked by bhawnanaman | 25 Apr, 2016, 06:15: AM
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CBSE 11-science - Physics
<div> <div style="margin: 0px; padding: 0px; border: 0px; border-image-source: initial; border-image-slice: initial; border-image-width: initial; border-image-outset: initial; border-image-repeat: initial; outline: 0px; vertical-align: baseline; font-size: 14px; line-height: 14px; text-align: left; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span style="background-color: #ffffff;"><span style="color: #0081cd; font-family: Lato, Arial, Helvetica, sans-serif;">&nbsp;Dear Experts,</span></span></div> <div style="margin: 0px; padding: 0px; border: 0px; border-image-source: initial; border-image-slice: initial; border-image-width: initial; border-image-outset: initial; border-image-repeat: initial; outline: 0px; vertical-align: baseline; font-size: 14px; line-height: 14px; text-align: left; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span style="background-color: #ffffff;"><span style="color: #0081cd; font-family: Lato, Arial, Helvetica, sans-serif;">The passage of electric current through silver nitrate and a metal sulphate deposited 4.04 g of Silver and 1.19 g of metal. If the specific heat of metal is 0.095, calculate the atomics mass of metal.<br />Please answer fast. &nbsp;</span></span></div> </div>
Asked by suryansudash5 | 26 Nov, 2015, 03:52: PM
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CBSE 11-science - Physics
<div>I want to become scientist by physics? Which branch of physics is best?what about electromagnetism? plz tell me ...........</div>
Asked by Kusum and Sanjeet | 13 Jul, 2015, 10:02: PM
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