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A geyser heats water flowing at the rate of 3.0 litres per minute from 27 °C to 77 °C. If the geyser operates on a gas burner, what is the rate of consumption of the fuel if its heat of combustion is `4.0 × 10^4` J/g

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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What amount of heat must be supplied to `2.0 × 10^(–2)` kg of nitrogen (at room temperature) to raise its temperature by 45 °C at constant pressure ? (Molecular mass of `N_2` = 28; R = 8.3 J mo`l^(–1)`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain why Two bodies at different temperatures `T_1` and `T_2` if brought in thermal contact do not necessarily settle to the mean temperature (`T_1` + `T_2`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain why The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain why Air pressure in a car tyre increases during

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain why The climate of a harbour town is more temperate than that of a town in a desert at the same

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A cylinder with a movable piston contains 3 moles of hydrogen at standard temperature and pressure. The walls of the cylinder are made of a heat insulator, and the piston is insulated by having a pile of sand on it. By what factor does the pressure of the gas increase if the gas is compressed to half its original volume

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, an amount of work equal to 22.3 J is done on the system. If the gas is taken from state A to B via a process in which the net heat absorbed by the system is 9.35 cal, how much is the net work done by the system in the latter case ? (Take 1 cal = 4.19

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following : What is the final pressure

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following : What is the change in

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following : What is the change in

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following : Do the intermediate states of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A steam engine delivers `5.4×10^8`J of work per minute and services `3.6 × 10^9`J of heat per minute from its boiler. What is the efficiency of the engine? How much heat is wasted per

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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An electric heater supplies heat to a system at a rate of 100W. If system performs work at a rate of 75 joules per second. At what rate is the internal energy

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A thermodynamic system is taken from an original state to an intermediate state by the linear process shown in Fig. ) Its volume is then reduced to the original value from E to F by an isobaric process. Calculate the total work done by the gas from D to E to

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A refrigerator is to maintain eatables kept inside at 90C. If room temperature is 360C, calculate the coefficient of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Every point on the x axis is of the

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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The given graph shows Nisha’s trip to a mall by a car. Observe the graph carefully and find what was she doing between 5 pm and 7

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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In a __________ graph, all the points on the graph lie on the same straight

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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The coordinates of the origin are

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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