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Two moles of ideal helium gas are in a rubber balloon at 30ºC. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to 35ºC. The amount of heat required in raising the temperature is nearly (take R = 8.31 J/mol.K) -jee main 2012 physics 1 AnswerExplain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by another charged balloon? cbse-class8-physics-20151 AnswerAn inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall? cbse-class8-physics-20151 AnswerWhich of the following cannot be charged easily by friction? cbse-class8-physics-20151 AnswerThe internal energy of an ideal gas is a function of Gate-20161 AnswerMilk enters into the heating section of a high temperature short time (HTST) pasteurizati on plant at a temperature of 45ºC and leaves at 72 ºC. Hot water at temperature of 95 ºC enters counter - currently into the heat exchanger 1 Answer 5.6 liter of helium gas at STP is adiabatically compressed to 0.7 liter. Taking the initial temperature to be T1, the work done in the process is - jee main 2012 physics 1 AnswerA reversible cycle receives 40 kJ of heat from one heat source at a temperature of 127 C and 37 kJ from another heat source at 97 C. The heat rejected (in kJ) to the heat sink at 47 C is __________ Gate-20161 AnswerFill in the blanks. GATE- Chemical Engineering- 20131 AnswerPlot a graph showing the variation of specific heat of water with temperature. Physics Cbse class 11 20161 AnswerIn the summer of 2012, in New Delhi, the mean temperature of Monday to Wednesday was 41ºC and of Tuesday to Thursday was 43ºC. If the temperature on Thursday was 15% higher than that of Monday, then the temperature in ºC on Thursday w1 AnswerWhat is the change in internal energy of a gas during (i) isothermal expansion and (ii) adiabatic expansion? -Physics Cbse class 11 1 AnswerThe hot tearing in a metal casting is due to: (Gate mechanical 2014 question paper)1 AnswerAdiabatic work of 200 kJ is done on ideal gas of mass m = 1 kg (Cv=1000 j/kgk ), which is stored in a rigid container at a pressure of 100 kPa and temperature 300 K.1 AnswerThe molar specific heat at constant volume of an ideal gas is equal to 2.5 times the universal gas constant (8.314 J/mol.K). When the temperature increases by 100k, the change in molar specific enthalpy is ___ J/mol.1 AnswerHot water at 95 C is used in a plate heat exchanger for heating 2 kg s^-1 fruit juice from 45C to 75C. Specific heat capacity of fruit juice is 3.7 kJ kg^-1 K ^-1. Final temperature of the hot water is 70C. Overall heat transfer coefficient is 1122 W1 AnswerWhich one of the following statements describing aspects of partial melting behavior of a binary eutectic system is NOT TRUE? -gate Geology & Geophysics 2017 1 Answer The above p-v diagram represents the thermodynamic cycle of an engine, operating with an ideal monoatomic gas. The amount of heat, extracted from the source in a single cycle is : - physics 20131 AnswerThe heat loss from a fin in 6W. The effectiveness and efficiency of the fin are 3 and 0.75, respectively. The heat loss (in W) from the fin, keeping the entire fin surface at base temperature, is ________.1 AnswerA certain amount of an ideal gas is initially at a pressure P1 and temperature T1. First, it undergoes a constant pressure process 1-2 such that T2 = 3T1/4. Then, it undergoes a constant volume process 2-3 such that T3 = T1/2. The ratio of the final 1 Answer
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Two moles of ideal helium gas are in a rubber balloon at 30ºC. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to 35ºC. The amount of heat required in raising the temperature is nearly (take R = 8.31 J/mol.K) -jee main 2012 physics
(A) 62 J (B) 104 J (C) 124 J (D) 208 JBy:milan-ransinghTaged users:Likes:Be first to like this questionDislikes:Be first to dislike this question
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