3- The tungsten filament of a lamp works at a temperature of (2460 K) and its emissive value is (0.35). What is the area of tungsten if the lamp's power is (100 watt)? 12
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Q: 2.) The escape velocity of any object from Earth is 11.1 km/s. At what temperature would oxygen…
A: THE VALVES PROVIDED IN THE QUESTION ARE AS FOLLOWS- υrms = 11.1 kms=11.1 ×103ms MO2=…
Q: 6. DETAILS MY NOTES ASK YOUR TEACHER The boa constrictor is a cold-blooded snake, meaning it must…
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Q: . Some incandescent light bulbs are filled with argon gas. What is Vms for argon atoms near the…
A: Given, Gas is Argon. Temperature near the filament is T = 2500 K Molar mass of argon gas is M =…
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A: Solution: Given that t = 1.5 cm thermal contact conductance hc = 19000 W/m2 C k = 401 W/mC
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A: Kelvin temperature and Celsius temperature is related by,
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Q: A sample of water that is initially at 84.0ºC absorbs 500 kcal of heat. As a result, the liquid…
A: Given that:- Initial temperature of water=80°C
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Q: 5) A student is heating a block of chocolate in a pan on the stove. He uses a cooking thermometer to…
A: A graph is provided which shows the variation in temperature of chocolate because od heating as time…
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A: As per BARTLEBY GUIDELINES i have to do only 3 ssubparts of a question so I did a, b, c only. Repost…
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A: Since there are multiple questions posted, we will answer the first question. The heat energy needed…
Q: A spherical balloon has a diameter of 20 cm, and contains Oxygen gas at a pressure of 1.2 bar and a…
A: The given values are, d1=20 cm=0.20 mp1=1.2 bar=1.2×105 PaT1=27° Cd2=40 cm=0.40 m=2d1p=kd2…
Q: 9. How might physicists have come to know that at a constant temperature and constant mass, the…
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Q: 12. A thermometer showing multiple scales measured the temperature of an object. On which of the…
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Q: 1 mole of Helium (a monatomic ideal gas) is taken throug of three thermodynamic processes. The gas…
A: PA= 1 atm VA= 2 L TA= 24.4 K PC=2 atm The gas is then compressed isothermally ( constant…
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Q: Coppersheet covers a wall and has an area 20 m2 at 150°C. Calculate the change in area when the…
A: Given Data : The Initial area of the wall is given as Ai = 20m2. The initial temperature of the wall…
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Q: 2. Determine the heat capacity of pure solid aluminum as a function of the temperature, using the…
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Q: 17) What is the change in area (in cm²) of a 50.0 cm by 140 cm automobile windshield when the…
A: 17. The initial area is
Q: 6. If the speed of every atom in a monatomic ideal gas were doubled, by what factor would the Kelvin…
A: The average translational kinetic energy of a molecule in an ideal gas is 32kT. 32kT=12mv2rms=K.E¯
Q: If the temperature of the metal surface is 4.2 °F, then calculate its value in Kelvin a. -288.444
A: The formula is F - 32180=K - 273.15100
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Q: QUESTION 2 If a hypothetical planet without an atmosphere had an atmosphere instantaneously added,…
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A: There is a chance for both systematic error and random error.
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A: Two stars A and B have the same emissivity. (e=emissivity, are same) Star A, radius RA=0.5R,B,, are…
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Q: 4. Newton showed that the rate of change of temperature is proportional to the temperature…
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Q: 2. For nitrogen gas at a temperature of 50 0C calculate the following given that the molecular mass…
A: a. rms velocity of molecule is vrms=3RTM=38.314 J/mol.K50+273 K0.028 kg/mol=536.4 m/s
Q: What temperature will air at 20°C be cooled to if it expands adiabatically from a volume of V1 to V2…
A: From the adiabatic equation,…
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A: Linear thermal expansion is the variation of the linear dimensions of a material with the increase…
Q: 10) A hole with diameter of 2cm is drilled through a stainless steel pate at room temperature…
A: Diameter of the hole: d=2 cm = 0.02 m Radius of the hole, R= 0.01 m Room temperature, Ti=20° C Final…
Q: 1. A block of iron with a mass of 2.00 kg is initially at a temperature of 600∘C. It is dropped into…
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Q: - Calculate the room temperature if its alue measured by a Celsius thermometer is equal to one third…
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Q: 10) The temperature of a rigid (i.e., constant-volume), sealed container of gas with pressure 3 Pa…
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Q: 2.) This slope will give you the change in weight (Newtons) per second. Knowing the latent heat of…
A: Latent heat is defined as the quantity of heat required to convert a unit mass of a substance from…
Q: 14. A granite ball of radius 2.00 m and emissivity 0.45 is heated to 135°C. a. Convert the given…
A: a) To convert temperature from Celsius to Kelvin, TK=TC+273.15TK=135+273.15KTK=408K
Q: An ideal gas goes from an initial equilibrium state characterized by the state variables (P1, V₁,…
A: The initial state given by the state variables is (P1, V1, T1, n). And the final state is given by…
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