Q. A stone is release from a cliff and comes down, what is the change in kinetic energy of stone?

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Q. What is the change in internal energy for a process which has final and initial states are exactly similar?

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Q. What is the change in internal energy of 2 mole of air (Cv = 2.1 X 10⁴ J/mole°C), if its temperature changes from 10°C to 20°C?

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Q. What is the change in internal energy of 1 mole of air ((Cv = 2.1 X 10⁴ J/mole°C), if its temperature changes from 10°C to 5°C?

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Q. Ratio of change in internal energy of a substance from 4°C to T and from T to 10°C is 2, what is T?

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Q. Ratio of change in internal energy of a substance from 15°C to T and from T to 10°C is – 2, what is T?

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Q. Total energy of the universe is always ______

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Q. A stone has initial potential and kinetic energy as 10 J and 5 J respectively, if the final potential energy of the stone is 15 J what is its final kinetic energy?

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Q. A stone has initial potential and kinetic energy as 5 J and 20 J respectively, if the final kinetic energy of the stone is 15 J what is its final potential energy?

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Q. A stone has initial potential, kinetic and internal energy 4 J, 15 J and 20 J respectively, if the final kinetic energy and potential energy of the stone is 5 J and 10 J respectively, what is the final internal energy?

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Q. A stone has initial potential, kinetic and internal energy 7 J, 10 J and 2x J respectively, if the final kinetic energy, potential energy and internal energy are 5 J, 21 J and x respectively, what is the final internal energy?

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Q. 10 J of heat and 5 J of work are supplied to the system, what is the change in internal energy?

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Q. 15 J of heat is supplied to a system and system does 5 J of work, what is the change in internal energy?

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Q. 5 J of heat is taken out of the system and 20 J of work is done on the system, what is the change in internal energy of the system?

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Q. 10 J of heat is supplied and 3 J is taken out, if the change in internal energy of the system is 5 J, what is the work done on the system?

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Q. 5 J of work is done by the system, if the change in internal energy of the system is 10 J, what is the heat supplied to the system?

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Q. 2 Kg of steam is enclosed in a container with internal energy = 5 J/Kg, then 5 J of heat is supplied to the system, what is the final internal energy?

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Q. 5 Kg of steam is enclosed in a container with internal energy = 10 J/Kg, then 25 J of heat is supplied to the system, what is the final internal energy?

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Q. In a 2 stage process Q1 = 5 J, Q2 = 10 J, if the change in internal energy in first stage is 10 J and the total change in internal energy is 20 J, what is the work do done in second stage?

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Q. In a 3 stage process Q1 = 10 J, Q2= – 15 J, Q3 = 25 J, if ∆E1 = 15J and ∆E3 = 10 J, what is the work done in second stage, if the total ∆E is 30 J?

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