explain why astronomers call such an object a blackbody?
Q: Calculate the radiance of a 4,456-K blackbody at a wavelength
A: Given data: Temperature, T=4456 K Wavelength, λ=632 nm=632×10-9m Known data: Planck's constant,…
Q: A cavity radiator has its maximum spectral radiance at a wavelength of 6,9×10-7 m. If the body is…
A:
Q: A black body radiator in the The shape of a sphere has a surface area of 1.1 m². If the temperature…
A: Given data: Surface area (A) = 1.1 m2 Temperature (T) = 1015 K Black body radiator
Q: A blackbody at 200 K is emitting to surroundings. (a)- Calculate the wavelength at which the…
A: Solution: (a). Use the Wien displacement formula to find the wavelength corresponding to maximum…
Q: (b) Following up on part (a), calculate the energy (in J) of a typical photon. Assume for this…
A: Given in question: Wavelength(λ) = 1.1×10-3 m Planck's constant(h)…
Q: A blackbody has a temperature of 2000°C. Determine the wavelength and frequency of its most intense…
A: Given: Temperature of blackbody T = 2000oC=2273K
Q: What wavelength (in nanometers) is the peak intensity of the light coming from a star whose surface…
A: Determine the wavelength of the light.
Q: B2. A spherical star is detected by an astronaut in a spacecraft at a distance z of 1.5×10¹2…
A:
Q: Which type of X-ray spectrum (continuous or discrete) would you expect to be the most dominant…
A: Which type of X-ray spectrum (continuous or discrete) would you expect to be the most dominant…
Q: The star Betelgeuse has surface temperature 3590 K and can be regarded as a blackbody. (a) Find the…
A: The temperature of the Betelguese is given as T=3590 K (a). According to Weins displacement law, the…
Q: Suppose the electron in a hydrogen atom moves fron n=2 to n=1. In which region of the…
A: Solution: Given: 1 eV = 1.60 x 10-19 J h = Planck's constant = 6.63 x 10-34 J.s ni = initial…
Q: The terminology of different parts of the electromagnetic spectrum is given in the text. Use the…
A: Energy of the photon
Q: A perfect black body has its surface temperature 27 cº Determine : Maximum radiation wavelength?…
A:
Q: The temperature of a blackbody is 5505 o (a). What is the wavelength of the peak of the blackbody…
A:
Q: Use the formula λ m T = 0.29 cm K to obtain the characteristic temperature ranges for different…
A:
Q: Human body temperature is about 310 K (3.10 x 102 K). At what wavelength (in nm) do humans radiate…
A: Using Wein's displacement law Where T = Temperature of an object = Wavelength of…
Q: Can a grey body transmit energy? If all grey bodies are opaque, does the transmissivity = 0?. I…
A: Gray body When the emissivity of the non-black surface is constant at all temperatures and…
Q: (a) Find a symbolic expression for the wavelength 2 of a photon in terms of its energy E, Planck's…
A: A photon of light of frequency f has a momentum P = hfc But f = c/λ,…
Q: Two infinite black plates of 800deg C and 329 deg C exchange heat through radiation. Calculate the…
A: Write the given values with the suitable avriables. T1=800 °C=1073 KT2=329 °C=602 K Here, T1 and T2…
Q: Assume the ionosphere consists of a single, uniform layer with a density of 10° electrons per cubic…
A: the formula for plasma frequency is given by wp = ne2∈0me Hzwhere n= density of electrons = 105…
Q: from a 7.5 m high rock with a speed of 3.om/s. How far from the base of the rock will she land ? 2 3…
A:
Q: If it takes 10.2 eV of energy excite hydrogen from the ground state into the first excited (n = 2)…
A:
Q: How fast should an electron move such that its kinetic energy is equal to the energy of a red photon…
A: We know that Energy of photon is given byE=hcλ 1Hereh=plank…
Q: How does the number n of ejected electrons per second resulting from each light beam compare?…
A: Energy of red light is E=1.8 ev=1.8×1.6×10-19 JE=2.88×10-19 J Energy of Green light is E=2.3…
Q: Hydrogen H2 is a diatomic molecule composed of two hydrogen atoms. (Figure 1) is an energy diagram…
A: Given that: The velocity is v=19 km/s= 19×103 m/s The distance is x=0.05 nm The energy is…
Q: On a certain day, light is shining perpendicularly on the surface of the earth with an intensity of…
A: Energy of a photon is given by the following expression E=hcλ Here, E is the energy of photon in…
Q: collisions transfer energy
A: The year with the most auroras would be 2014, and the year with the least auroras would be 2020.
Q: What is the frequency (Hz), wavenumber (cm21), and energy (kJ/mol) of light with a wavelength of (a)…
A: Part-a Given: The wavelength of the light λ = 100 nm.
Q: Calculate the wavelength of a photon that has energy 2.83 × 10−19 Joules. Give your answer in units…
A: Given, Energy of photon E = hf= hc/λ = 2.83 × 10−19 J f is frequency and c is velocity of light…
Q: Our sun's blackbody temperature is about 6000 K and its peak radiation occurs at a wavelength of…
A: We can apply Wien's law.
Q: A blackbody radiator (none of the choices) does not absorb thermal radiation. emits radiation only…
A: First option is correct.
Q: How fast should an electron move such that its kinetic energy is equal to the energy of a red photon…
A: Given Wavelength of red photon λ=722 nm=722×10-9 m Energy of the photon E=hcλ h=Planck constant…
Q: If the temperature of a blackbody increases, the peak wavelength will increase as well. True or…
A: If the temperature of a blackbody increases, the peak wavelength will increase as well
Q: What are (a) the frequency, and (b) the energy (in eV) of a photon of light having a wavelength of…
A: Given : Wavelength=2.9*10-7m Planck's Constant=4.13*10-15eV-s
Q: A neutral hydrogen atom has a single proton and a single electron. When separated by a distance of…
A:
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…
Q: A mercury vapour lamp emits in the green portion of electromagnetic spectrum at a wavelength of…
A: Given that Wavelength (λ)=546.1 nm bandwidth△ν =6×108 Hz Coherence length is given by L=c△tL=c△νWe…
Q: A tungesten filament is heated to 3000.0 ∘∘C. Calculate the wavelength for which the emission…
A: According to Weins Displacement Law Wavelength*Absolute Temperature=Constant where constant…
Q: Calculate the wavelength of a photon having an energy of 5.89 x 10^11 J of energy. E = hc/λ
A: SOlution: given that E =5.89 x 10^11 J to calculate the wavelenght of the photon
Q: Assume that your body (with temperature of 310 K) can be approximated as a blackbody. What is the…
A:
Q: You measure with a super-magic thermometer that reads 1808 K. Your skin is measured at 33 °C. Assume…
A: a hypothetical perfect absorber and radiator of energy, with no reflecting power.
Q: a) The blackbody radiation emitted from a furnace peaks at a wavelength of 4.5 10-6 m (0.0000045 m).…
A:
An idealized radiating object does not reflect or scatter any radiation but instead absorbs all of
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
