Physics question and answers for February 25, 2024
- Q The rms speed of the molecules of a gas is 200 m s at a temperature 300 K What is the mass of the individual molecules O 5 66 x...
- Q What is the average kinetic energy per molecule of an ideal gas at a temperature of 300 K Boltzmann s constant is k 1 38 x 10 23 J K...
- Q Five molecules of a gas have the following speeds 200 m s 300 m s 400 m s 500 m s and 600 m s The rms speed for these...
- Q The solar corona is a very hot atmosphere surrounding the visible surface of the sun. X-ray emissions from the corona show that its temperature is about 2 x 10^6 K....
- Q A steel rod is 3.00 cm in diameter at 25C. A brass ring has an interior diameter of 2.992 cm at 25. At what common temperature will the ring just...
- Q z pointsLarge helium-filled balloons are used to lift scientific equipment to high altitudes. What is the pressure in atm inside such a balloon if it starts out at sea level...
- Q An ideal gas is taken through a cyclic thermo dynamical process through four steps. The amounts of heat involved in steps are Q? = 5960J, Q2 = -5585J, Q3 =...
- Q 0.517 moles of an ideal gas are confined to a rigid container (V = 6.1 L). The pressure of gas at T = 596 K was 5.11 atm. What is...
- Q Ideal gases are often studied at standard ambient temperature and pressure (SATP). The International Union of Pure andApplied Chemistry (IUPAC) defines SATP to be T=25 C and P = 100...
- Q What is the pressure of 350 m of a given gas containing 3.7 x 10^25 molecules held ata temperature of 85C?(Use 1.38 x 10^-23 J/K for Boltzmann's Constant.) Round to...
- Q A rigid cylinder with a movable piston contains a sample of hydrogen gas. At330. K, this sample has a pressure of 150. kPa and a volume of 3.50. L. What...
- Q A flask contains carbon monoxide and carbon dioxide gases. The partial pressures of each are2235 psi and 1125 psi, respectively. What is the total pressure in the flask in psi?
- Q According to the kinetic molecular theory,Particles present in matter are in constant rest.Matter possesses definite Internal energy.All collisions between particles are inelastic in nature.Matter has no mass but occupy a...
- Q If the gas in a confined container (constant volume) were to have its temperature raised from 55 degrees C to 160 degrees C, what would the final gage pressure be...
- Q 3. Gas is contained in a 5.00-L vessel at a temperature of 23.0C and a pressureof 5.00 atm.a) Determine the number of moles of gas in the vessel.b) How many...
- Q Pr4. An ideal gas is contained in a 8-L closed container at 20 degrees C.If the number of molecules in the gas is 15 x 1023 (one mole of gas...
- Q One mole each of a diatomic gas and a monoatomic gas are brought to the same, very high temperature. What is the ratio of the diatomic gas' internal energy to...
- Q By using the expression for the pressure of the gas P = 1 3nmv, show that the average kinetic energy of a gas molecule is 3/2KT, where K is Boltzman's...
- Q A fixed quantity of an ideal gas has a pressure, volume, and temperature given by P?, V?. and T?. respectively. If the gas has its volume tripled and its temperature...
- Q Which of the following describes a situation that would violate the law of entropy?Oan iron bar placed in a room becomes cooler than its surroundingsOiced tea and hot coffee left...
- Q The threshold wavelength for ejection of electrons from a metal is 330 nm. The work function for the photoelectric emission from the metal is (h = 6.6 10?4 Js)A. 1.2...
- Q Suppose a gas-filled incandescent light bulb is manufactured so that the gas inside the bulb is at atmospheric pressure when the bulb has a temperature of 20C.a) Find the pressure...
- Q What is the average kinetic energy in joules of hydrogen atoms on the 5500 C surface of the Sun?(b) What is the average kinetic energy of helium atoms in a...
- Q 16 An electric immersion heater of 1 08 kW is immersed in water After the water has reached a temperature of 100 C how much time will be required to...
- Q Two tangent galvanometers having coils of the same radius are connected in series A current flowing in them produces deflections of 60 and 451 respectively The ratio of the number...
- Q 2po A Po O Di 13 VO V The above p v diagram represents the thermodynamic cycle of an engine operating with an ideal monoatomic gas The amount of heat...
- Q Equal amount of same gas in two similar cylinders A and B compressed to same final volume from same initial volume one adiabatically and another isothermally respectively then Afinal pressure...
- Q One mole of an ideal gas with heat capacity at constant pressure Cp undergoes the process T To av where To and a are constants and the volume increases from...
- Q For the P V diagram given for an ideal gas 1 P A P V Constant V out of the following which one correctly represents the T P diagram T...
- Q gas is used in carnot engine as a working If during adiabatic expansion part of the cycle the volume of gas increases from Vto 32 V the efficiency of engine...
- Q 2 The molar heat capacity in a process of a diatomic gas if it does a work of when a heat of Q is supplied to it is 3 Correct...
- Q Problem 6 10 points Bonus Air flows adiabatically through a frictional variable area duct divergent nozzle The conditions at the inlet are M 0 2 Tt1 460K and Pt 600kPa...
- Q A gas expands from state A to state B as shown in the graph If the change in internal energy of the gas is 2 02 x 106 J find...
- Q 2k V k 2 The relation between internal energy U pressure P and volume V of a gas in an adiabatic process is U a bPV where a and b...
- Q 8 The internal energy of an ideal gas drezorg during an isothermal process when the gas is a expanded by adding more molecules to it b expanded by adding more...
- Q d Zero 1 During an adiabatic process the pressure of a gas is found to be proportional to the cube of its temperature The ratio of Cp for the gas...
- Q Figure shows a cyclic process Heat absorbed in process A B is 100 J B A is adiabatic compression Work done on the gas in B A is 70 J...
- Q Calculate the amount of water that must be supplied to a heat exchanger that cools 100 kg h of tomato paste from 90 C to 20 C The tomato paste...
- Q A monoatomic ideal gas of two moles is taken through cyclic process as shown in the figure If volume V D C ratio 2 and T 27 C then AQ...
- Q Two ideal gases A and B having the same temperature T same pressur are mixed together If the temperature of mixture is kept constant and the volume occupiec the mixture...
- Q 58 An ideal monoatomic gas is taken through thermodynamic states A B CD via the paths shown in the figure If UA UB Uc and Up represent the internal energy...
- Q 33 In a thermodynamic process with 2 moles of gas 30 J of heat is released and 22J of work is done on the gas Given that initial internal energy...
- Q A Carnot reversible engine converts 1 6 of heat input into work When the temperature of the sink is reduced by 62 K the efficiency of Carnot s cycle becomes...
- Q The spectral energy distribution of star is maximum at twice temperature as that of sun Find the total energy radiated by sta One sixteenth of sun Sixteen times as that...
- Q When a given mass of a gas is subjected to temperature changes a volume V and pressure P diagram was obtained from state 1 to state 2 During this process...
- Q Suppose that two heat engines are connected in series such that the heat released by the first engine is used as the heat absorbed by the second engine as shown...
- Q 20 The P T diagram for a thermodynamic process is shown in the figure The molar heat capacity of diatomic gas during this process is PA 1 2 5R 3...
- Q An event has six possible outcomes with probabilities 1 2 1 4 1 8 1 16 1 32 1 32 Find the entropy of the system CO4
- Q One mole of a monatomic gas is involved in the cyclic process as shown in the PV graph Extension of the line segments 1 2 and 3 4 pass through...
- Q 35 1 KW heater of capacity 1 litre is used for heating water The time required to raise the temperature of water by 10 C is specific heat of water...
- Q 6 180 Consider the following PV diagram for a monoatomic gas The ratio of work done by the gas to the change in internal energy of the gas will be...
- Q SolveLancer Test We are given a monoatomic gas If Cp Cy 4000 J kg K 1 find Cp SolveLancer Test a 9696 96 J kg K 1 b 6060 60...
- Q Objective Type Questions A sample of gas occupies 10 L under a pressure of 1 atm What will be its volume if the pressure is increased to 2 atm Assuming...
- Q In a grand canonical ensemble a system X of fixed volume is in contact with a large reservoir Y then A X can exchange only energy with Y B X...
- Q 8 Which of the following statements are True i Heat cannot flow from cold body to a hot body by itself ii Any engine can be more efficient than a...
- Q Object A and object B have equal mass Object A is at the temperature of 10C and object B is at the temperature of 80C You bring the two objects...
- Q In a Carnot engine the temperature of reservoir is 92 and that of sink is 27 C If the work done by the engine when it transfers heat from reservoir...
- Q A closed system contains 2 kg of air at 3 bar 150 C It is stirred and expands till its pressure reduces to 1 bar During the process the temperature...
- Q A carnot engine having an efficiency of n 1 10 as heat engine is used as a refrigerator If the work done on the system is 10 J the amount...
- Q Problem 1 Calculate the gross and net calorific value of coal having the following compositions carbon 85 hydrogen 8 sulphur Nitrogen 2 ash 4 latent heat of steam 587 cal...
- Q Which of the following statement is true J K CET 2006 a Internal energy of a gas depends only on the state of the gas b In an isothermal process...
- Q 20 Variation of internal energy with density of one mole of monoatomic gas is depicted in the adjoining figure Corresponding variation of pressure with volume can be depicted as Assuming...
- Q 9 An ideal gas is initially at temperature T and volume V Its volume is increased by AV due to an increase in temperature AT pressure remaining constant The quantity...
- Q 3 03 A closed system contains air its mass is m 2 kg The initial state is p 0 25 MPa and T 30 C It undergoes a constant pressure...
- Q Pona using the data in the V 7 V 1 mix 7 The work 1W2 is a 0 0 kj V V VA 2 V xm b 22 kj 8...
- Q 23 What will be the rms value of the alternating voltage represented by the equation V cos cot 2 cos 2oot 3 cos 3ct a 3 24 b 5 19...
- Q When we drink cold liquids our bodies must expend energy to maintain a normal body temperature of 37 oC How many liters of ice wate at 0 oC would you...
- Q A system performs work AW when an amount of heat is AQ added to the system the corresponding change in the internal energy is AU A unique function of the...
- Q of volume 1m is divided into two equal compartments by a partition One of these compartments contains an ideal gas at 300 K The other compartment is vacuum The whole...
- Q A hot liquid contained in a container of negligible heat capacity loses temperature at rate 3 K min just before it begins to solidify The temperature remains constant for 30...
- Q eat capacity at constant pressure of a certain system is a function of temperature only and may be 41 87 C 2 093 t 100 J C expressed as where...
- Q Express the differential form of the First Law of Thermodynamic Sq du 6W using enthalpy without using internal energy also write the derivation process I would be appreciated and give...
- Q 1 gm of ice at 0 C is mixed with 2 gm of water at 90 C Find the final temperature specific heat capacity of water 1 cal gm C...
- Q A tyre pumped to a pressure of 2 atmosphere suddenly bursts If the temperature of air before expansion is 27 C then the final temperature of air is useCP 1...
- Q The work output and heat input involved by a system in process A are 20 kJ and 15 kJ respectively Another process B between the same end conditions involves a...
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