The power emitted by a blackbody is proportional to T^4. If the temperature of the blackbody goes from 3000K to 6000K, by how much (by what factor, 2, 3, 8, etc) does the power increase?

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Q: A star radiates 3.75 times less power than the Sun. What is the ratio of the temperature of the star…

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Q: If a person has a dangerously high fever, submerging her in ice water is a bad idea, but an ice pack…

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Q: If the temperature decreases by a factor of 2, how much will the energy decrease? We have two…

A: Solution:Given:n = by this factor temperature decreases = 2 Told = old termperature = n x Tnew  Tnew…

Q: What is the energy required to turn an ice cube of mass 45g  and temp -10C into steam at 100C.

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Q: A blackbody radiator emits radiation with a wavelength of 500 micrometers. What is the temperature…

A: Given value--- wavelength = 500 micro m. We have to find--- What is the temperature of the…

Q: The eye of a stove top has a total area of 0.0628 m2 and gives off energy at a rate of 8720 W. If we…

A: When we consider the top eye to be perfect blackbody, then we can use the relation U = sAT4 Where U…

Q: Two sheets of aluminium foil have a separation of 4 mm, a capacitance of 30 pF and are charged to 12…

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Q: A block of ice (m = 9 kg) at a temperature of T1 = 0 degrees C is placed out in the sun until it…

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Q: A log in the fire is glowing red (λ = 629 nm). What is the temperature of the log, in kelvin?

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Q: How much energy is required to convert 3.5kg of ice at OC to water at 29C ? The latent heat of…

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Q: At "low" temperatures, the heat capacity of some materials varies with temperature as 12π¹ NkB C (T)…

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Q: Nuclear fusion - the energy source of the Sun, hydrogen bombs, and fusion reactors - occurs much…

A: The average translational kinetic energy is given by

Q: If the temperature of an object goes from 500 K to 9500 K, By what factor is its energy emitted per…

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Q: Suppose a hot object radiates with the twice the intensity as the sun on earth, i.e. 2600W/m2. What…

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Q: (b) To what temperature must the body be heated until its peak thermal radiation is in the red…

A: A blackbody is an ideal concept which absorbs all the wavelengths and also emits all the wavelengths…

Q: Suppose a blackbody at 425 K radiates just enough heat in 15.0 min to boil water for a cup of tea.…

A: According to Stefan's law for black body radiation Q/t = b A T4 Q = heat flow  b = Stefan constant A…

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A: The kinetic energy of helium atom is kE=32RT

Q: The total power emitted by a spherical black body of radius R at a temperature T is P. et P, be the…

A: Given Data :  Black body one - temp T1 = T , Power = P1 , radius R1 = R Black body two -  Temp T2 =…

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Q: A square metal plate with a side 0.4m is heated to a temperature of 2000k by passing a current…

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Q: The sun can be modeled as a blackbody emitting at a temperature of 5800.0 Kelvin. Determine the…

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Q: What is the maximum wavelength emitted by a blackbody whose temperature is 2900 K

A: Using wein's displacement formula which give the relation between maximum wavelength emitted by a…

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.