Imagine a photon gas at an initial temperature of T = 400 K. What is the temperature of the photon gas after it has undergone a reversible adiabatic expansion to 3 times its original volume?
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- Long Answer (15pt each) 14. Kinetic theory a. What is the average kinetic energy of a monatomic gas at a temperature of 354 K? b. If this is Ne gas (neon has 20 nucleons) what is the root-mean-squared speed? с. What temperature would be required to triple the speed of these particles?Kinetic energy of electron gas. Show that the kinetic energy of a three-dimensional gas of N free electrons at 0 K is U, = N€p .1. Average atomic and molecular speeds (vrms) are large, even at low temperatures. What is vrms (in m/s) for helium atoms at 6.00 K, just two degrees above helium's liquefaction temperature? 2. The escape velocity from the Moon is much smaller than from Earth and is only 2.38 km/s. At what temperature (in K) would hydrogen molecules (molar mass is equal to 2.016 g/mol) have an average velocity vrms equal to the Moon's escape velocity? 3.Hydrogen molecules (molar mass is equal to 2.016 g/mol) have an average velocity vrms equal to 239 m/s. What is the temperature (in K)?
- At sufficiently high temperatures, the thermal speeds ofgas molecules may be high enough that collisions may ionize amolecule (that is, remove an outer electron). An ionized gas inwhich each molecule has lost an electron is called a “plasma.”Determine approximately the temperature at which air becomesa plasma.Q20. A certain gas in a closed container at 0.001 atmospheres of pressure is irradiated with ionizing radiation, causing on average one electron to be stripped off each atom. The ionizing radiation also heats the gas from 20°C to 3000°C. The resulting ionized gas ("plasma") behaves like an ideal gas. What is the pressure in the plasma? a. 4.92'103 Pa b. 3.04'105 Pa O c. 1.23'103 Pa d. 2.26'103 Pa Clear my choiceConsider the following two-level system: ΔΕ=10-21 J E₁ Eo a. Calculate the ratio of molecules in the excited state to the number of molecules in the ground state at 300 K and 600 K. b. At which temperature do you expect a stronger absorption signal? Explain your answer (max 3 sentences!).
- a. Explain and solve the equation that explains the temperature deviation of a spherical gas cloud in mutual magnetism of its molecules and subject to the laws of thermodynamics.The Arhennius viscosity model describes how viscosity u depends on temperature 1: u = uo e E/RT 1 DVD DVD Here u is viscosity (Pa.s), I is the temperature (in "Kelvin), E is the activation energy (J mol¹), R is the universal gas constant (R = 8.3145 J mol¹¹ K¹) and U is a constant (Pa s). Ensure all your numerical answers are provided, accurate to 4 significant figures. Linearise this non-linear equation to allow the least squares fitting, i.e. write it in the form y = a + a₁x. Identify the independent (x) and dependent (y) variables and write the linearised equation in the answer boxes, clearly defining what ao and a₁ are equal to in terms of up, E and R. y: ao: a₁: X: IOHO OHO ManWhen a cooked chicken breast is first removed from an oven, it has a surface temperature of 180 C. By the time the chicken is served at the table it has cooled to 120 C. What is the ratio of energy flux density emitted from the surface of the chicken when it has cooled to that when it was hot? Group of answer choices A. depends on mass of the chicken B. 0.20 C. 0.57 D. 0.67 E. depends on surface area of the chicken
- Consider a gas of ? rigid diatomic molecules at temperature ?. a. What is the enthalpy, ?, in terms of the temperature ? and the Boltzmann constant? b. What is the average kinetic energy of the translational motion of one of the gas molecules in termsof ? and the Boltzmann constant?x Course Home MasteringPhysics: HW4 M Your Physics answer is ready. - sa X b Answered: A jet pilot takes his air X session.masteringphysics.com/myct/itemView?offset=next&assignmentProblemiD=135028808 Apps (1) NN P4... YouTube to MP3 Co.. phone cover for mo... AGARWAL-PHY-166 KHW4 Item 12 The space shuttle releases a satellite into a circular orbit 710 km above the Earth. Part A How fast must the shuttle be moving (relative to Earth) when the release occurs? Express your answer using three significant figures and include the appropriate units. Value Units Submit Request Answer Provide Feedback IIGLOBE ll 41 1:45 Laz 8 meet.google.com/dfx-tn. 28 Julie Ann Sapitula is presenting A spherical blackbody of 5 cm in radius is in equilibrium with its surroundings. It then absorbs 50 Kw of power radiated to it from surroundings. temperature of the sphere? the What is the approximate 5 mins. 1 Julie Ann Sapitula Lesley A Pecsoy Jemalyn F. Galera Ezekiel S. Pacleb Lorey Joy O. Callena Richard Andrew O. Prias 45 others Angeline V Bides You 54 dfx-tnxh-zah