Following a collision in outer space, a copper disk at 850°C is rotating about its axis with an angular speed of 25.0 rad/s. As the disk radiates infrared light, its temperature falls to 20.0°C. No external torque acts on the disk. (a) Does the angular speed change as the disk cools? Explain how it changes or why it does not. (b) What is its angular speed at the lower temperature?

Q: An aluminum cup of 76 cm³ capacity is completely filled with glycerin at 19°C. How much glycerin…

A: Let Vc is the original volume of the cup. αa​is the coefficient of linear expansion of aluminium and…

Q: The active element of a certain laser is made of a glass rod 33.0 cm long and 1.20 cm in diameter.…

A: Given L=33 cm  D=1.20 cm α=9*10-6C-1 △T=64oC   a) Increase in length is given by  △L=α…

Q: The band in the figure below is stainless steel (coefficient of linear expansion 17.3 x 10-6c-1,…

A:

Q: The active element of a certain laser in made of a glass rod 28 cm long and 2.3 cm in diameter.…

A: Length , L = 28 cm = 0.28 m Diameter , d = 2.3 cm = 0.023 m Average coefficient of linear expansion…

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A: Given data: Escape velocity from moon is, Vesc = 5500 miles per hour=2.45×10³m/s The temperature of…

Q: Consider an object with any one of the shapes displayed as shown. What is the percentage increase in…

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Q: Problem: A researcher measured temperature at various locations in a 1-m-long solid rod of constant…

A: Conductive heat transfer rate Q˙. Given, To=301.23 KT(x)=To+Ax2+BxA=20.34 K·m-2B=33.1 K·m-1x=0.5…

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Q: Questions and Discussion points. Question 1: You have a box with sides of length L = 10 m. This box…

A:

Q: Rod 1, with a thermal conductivity of 425 W/m-K, rod 2, with a thermal conductivity of 219 Wim-K,…

A: GivenRod 1 ,k1=425 W/mKRod 2 ,k2=219 W/mKRod 3 ,k3=112 W/mK

Q: Two metal bars are made of invar and a third bar is made of aluminum. At 0°C, each of the three bars…

A:

Q: An electrically insulated circular wire is horizontal and submerged in still water at 280K. Internal…

A:

Q: A space probe is far away from the Sun, or any other sources of energy. It is kept warm (so the…

A: Note: Since you have asked multiple questions, we will solve the first question for you. If you want…

Q: Consider an object with any one of the shapes displayed in Table 8.1. What is the percentage…

A: The percentage increase in moment of inertia can be given by The moment of inertia is proportional…

Q: A 670 kg meteorite made up of mostly aluminum, approaches the Earth. The initial temperature of the…

A: Given,  mass of the meteorite m=670 kg Initial temperature T1=-15 degree C initial velocity v=14…

Q: The two objects in the drawing are made from the same material (emissivity = 0.500) and have a…

A: Step 1: Step 2: Step 3: Step 4:

Q: The figure shows (in cross section) a wall consisting of four layers, with thermal conductivities k₁…

A:

Q: A pipe 30 m long with an outer diameter of 75 mm is used to convey steam at a rate of 1000 kg /…

A: given,length of pipe=30moutter diameter =75mmsteam rate=1000kg/hourvapour pressure =198.53kPathermal…

Q: The active element of a certain laser is made of a glass rod 28.0 cm long and 1.80 cm in diameter.…

A:

Q: At 0°C, a copper rod of length 20 cm is hinged at one end of a heating stick. The rod is free to…

A: The angular momentum of the system will be conserved. hence,  I1ω1=I2ω2 hence  ω1ω2=I2I1 The  moment…

Q: A 0.40 kg iron horseshoe that is initially at 500 °C is dropped into a bucket containing 20 kg of…

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Q: The band in the figure below is stainless steel (coefficient of linear expansion = 17.3 ✕ 10−6°C−1;…

A:

Q: The latent heat of vaporization is about 2.44 x 10⁶ J/kg and the density of the vapor is 0.598 kg/m³…

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Q: Suppose you have a 1kg piece of copper at 50°C , which you put into an isolated container with 2 kg…

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Q: The volume of the two boxes below is equal. The boxes contain argon molecules, and B has a higher…

A: According to ideal gas equation,P=pressureV=volumeT=temperatureR=gas constant

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Q: Liquid helium is stored at its boiling-point temperature of 4.2 K in a spherical container (r= 0.30…

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Q: Q.3. When a rod of length 20 m and linear expansion coefficient a = 12 x 106 /K is subjected to a…

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Q: (a) What is the average kinetic energy in joules of hydrogen atoms on the 5500°C surface of the Sun?…

A: Law of Equipartition of energy states that for any system which is in thermal equilibrium, total…

Q: **102. A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of…

A: The angular speed of wheel, ω∘ = 18 rad/s Initial temperature, Ti = -100 0C Final temperature, Tf =…

Q: A metal rod 50 cm long will expand by 0.075 cm if its temperature is from 0°C to 100°C. while metal…

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Q: The active element of a certain laser is made of a glass rod 27.0 cm long and 1.70 cm in diameter.…

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Q: You drop a 7 mole piece of zinc, which has been heated to 423 K into 0.101 kg of water at 300 K You…

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Q: When builders were constructing a sidewalk they forgot to include an expansion joint between two of…

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Q: ▼ Calculate the specific heat capacity at constant volume of water vapor, assuming the nonlinear…

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Q: Liquid helium is stored at its boiling-point temperature of 4.2 K in a spherical container (r= 0.30…

A: The temperature of Helium spherical container is The = 4.2 KThe radius of the container is r = 0.30…

Q: - Your answer is partially correct. The temperature near the surface of the earth is 297 K. A xenon…

A: 1 amu = 1.67 × 10-27 kg Molar mass xenon = 131.29 g                                   = 0.13129…

Q: The active element of a certain laser is made of a glass rod 34.0 cm long and 1.20 cm in diameter.…

A: The length of the glass rod is L = 34.0 cm. The diameter D = 1.20 cm. The average coefficient of…

Q: steel gas can is filled to the brim with gasoline at Taking into account the expansion of the gas…

A: Solution: The following relation calculates the increase in the volume of the steel can.…

Q: Liquid helium is stored at its boiling-point temperature of 4.2 K in a spherical container (r = 0.30…

A: Temperature of Helium spherical container is The = 4.2 K Radius of container is r = 0.30 m…

Q: COMPLETE SOLN: a.) An aluminum sheet of thickness 8.3 cm and area 13 m^2 is welded on top of a…

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Maxwell speed distribution

Maxwell-Boltzmann distribution or commonly known as Maxwell speed distribution, explains the division of the energy levels of the molecules of an ideal gas on the basis of the statistical theory. In 1859, Scottish physicist James Clerk Maxwell established the context for the distribution of molecular velocities for random molecules moving in a closed environment. This theory was generalized in 1871 by German physicist Ludwig Boltzmann. He improvised the theory to express the distribution of energy levels among different molecules.