collisions transfer energy
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: Satellites are typically powered by solar panels. Using the results of a Chp 2 homework problem,…
A: We are strictly following the data given in the question: Solar power per unit area = 1381.465…
Q: How many watts will be radiated from a spherical black body 25 cm in diameter at a temperature of…
A: Diameter, d = 25 cm Radius, r = d/2 = 12.5 cm = 0.125 m Temperature, T = 900° C Power, P = ?
Q: A black body measures 20cm by 15cm. If the temperature of the object is 2500K how much energy does…
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Q: A perfect black body has its surface temperature 27 cº Determine : Maximum radiation wavelength?…
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Q: As the absolute temperature of a black body doubles what happens to the total energy emitted by the…
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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: Using the given charge-to-mass ratios for electrons and protons, and knowing the magnitudes of their…
A: The charge of electrons and protons are same, q The charge to mass ratio for electron is…
Q: An astronomer discovers a star that has a peak wavelength of 617 nm.
A: For frequency Speed = frequency × wavelength c = f× λ 3× 108 =f x 617 × 10-9 4.8× 1014 Hz = f
Q: 1. Temperature of the Cosmic Microwave Background radiation (CMB) is T= 2.725 K. a) Assuming it has…
A: (a) as we know max. Wavelength of radiation given by wein displacement law Lembda = b/ T where b is…
Q: = At what wavelength does a room-temperature (T maximum thermal radiation? 20° C) object emit the
A: To study objects that emit thermal radiation we model them as a blackbody. A black body is a…
Q: A blackbody radiator in the shape of a sphere has a surface area of 18 m2. If it has a temperature…
A: Given data: A blackbody radiator Emissivity (ε) = 1 Surface Area (A) = 18 m2 Temperature (T) = 2200…
Q: What is the vrms of hydrogen on the surface of the sun if its temperature is 5.36E3 degC? What is…
A: given that,M=1 gmol=10-3 kgmolT=5360 °C =5633 KR=8.314 Jmol K
Q: The infrared radiation coming from the center of our galaxy has a wavelength of 2 µm. Using this…
A: The energy released by the core of a star is absorbed by its outer layers which then remits them.…
Q: A star has a surface temperature of 6400 K. The intensity of a sunspot is found to be 1/3 the…
A: The expression for the intensity can be written as I=σT4…
Q: In the Sun's core, thermonuclear reactions produce the energy which eventually produces the Sun's…
A: Given: Tcore≈1.6×107Kρ=1.5×105 kg m-3σ=2.75×10-48 m2 Formula used: The approximate reaction = Total…
Q: An astronomer discovers a star that has a peak wavelength of 611 nm. Determine the peak frequency…
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Q: (A) Every square meter area facing the Sun, at the distance 1 AU from the Sun, receives radiant…
A: A) Given that:Prec=1.368 kW=1.368×103 WA=1 m2
Q: What will be the critical frequency
A: Critical frequency is a frequency above which a wave will not get reflected by ionosphere and will…
Q: The planet Venus is different from the earth in several respects. First, it is only 70% as far from…
A: To determine: Surface temperature.
Q: Scientists plan to place detection devices outside Earth's atmosphere to detect radiations from a…
A: Special cameras, because high energy UV rays are emitted by objects having very high mass
Q: The sun has a luminosity of 3.9 × 1026 W and an angular diameter of θ = 32 arc mins. Assume that the…
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Q: How big would a square solar sail need to be in order for sunlight to exert a 12 N force on it (use…
A: Given data: The force exerted by the sunlight is F = 12 N The intensity of the sunlight is I= 1100…
Q: Suppose YOUR body temperature averages 98.6 F. 1. How much radiant energy in Wm^-2 is emitted from…
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Q: What is the Vrms of hydrogen on the surface of the sun if its temperature is 5.44E3 degC? Number…
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Q: A neutral hydrogen atom has a single proton and a single electron. When separated by a distance of…
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Q: 80 Sun energy flux: 63 x 10 Wim at the Sun surface 1370 Wim solar constant reaching Earth 342 Wi…
A: Given:
Q: Using the given charge-to-mass ratios for electrons and protons, and knowing the magnitudes of their…
A: The charge of electrons and protons are same, q The charge to mass ratio for electron is…
Q: If the temperature of a black body is increased from 500k to 1000k , by what factor, the rate of…
A: The rate of emission of energy from a Blackbody denoted by j is given by Stefan-Boltzmann Law…
Q: In a not so far away solar system, the sun's intensity is 30 W/m2 for a planet located a distance R…
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Q: What is the energy (in Joules, J) and color associated with 532-nm light? Energy and Type of EM…
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Q: If a star gives off light at a peak wavelength of 6.80x10-7 m. What would be the temperature of this…
A: Given peak wavelength = 6.8×10-7m
Q: 3) How bright will Pluto appear in reflected or scattered sun-light (total Flux received in W/m² )…
A: The radius of pluto is .The radius of sun is .The albedo of Pluto is 0.60The surface temperature of…
Q: When stars like the Sun die, they lose their outer layers and expose their very hot cores. These…
A: Wien's displacement law states that the BLACK BODY RADIATION curve for different temperatures will…
- Auroras are caused by collisions between particles such as electrons released by the Sun, and atoms in a planet’s atmosphere. These collisions transfer energy to the atmospheric atoms causing them to emit specific colors (wavelengths) of light. On Earth, auroras occur in a layer of the atmosphere known as the ionosphere, 80 km to 400 km above the surface. If solar activity increases, the number of sunspots increases, and more particles are released by the Sun. If, on average, there were 150 sunspots in 2014, 5 in 2020, and 160 in 2023, which year(s) will have the most auroras, and which year(s) the least? Can you explain why?
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- You are an astronomer and are searching for planets in other stellar systems for which conditions on the surface of the planets are similar to the Earth. You have identified a candidate star, Tycho1601 that you know has same size to the Sun but 1.4 times the surface temperature of the Sun (our Sun). Around that star there are four planetsrotating around it. You are about to invest valuable telescope time in studying the individual planets which one you start with?A) Planet TychoA located at a distance that is half the distance between our Earth and our Sun.B) Planet TychoB located at a distance that is equal to the distance between our Earth and our Sun.C) Planet TychoC located at a distance that is double the distance between our Earthand our Sun.D) Planet TychoD located at a distance that is ten times the distance between our Earth and our Sun.2. The wavelength of maximum intensity of the sun's radiation is observed to be near 500 nm. Assume the sun to be a black-body and calculate,imsed of (a) the sun's surface temperature (b) the power per unit area (intensity) emitted from he sun's surface. (c) At what rate is the sun losing mass in units of kg/s? (Hint: What are the units from rignslavaw wert odrai Jari W (d) your answer in part (b)?) (d) At that rate, how much time would it take to exhaust the sun's fuel supply? Does your answer seem reasonable? (The sun's mass is ~2.0x1030 kg)1. The maximum radiance of a blackbody is at wavelength λ = 1.2 µm. a) At what temperature does this occur? b) Estimate the brightness temperature for a grey body at this wavelength if the emissivity coefficient is 0.9. (Use the full formula.) ( hc
- If you double the temperature of a blackbody, by what factor will the total energy radiated per second per square meter increase?A blackbody radiator in the shape of a sphere has a surface area of 152 m. It has a temperature of 1200 K how much energy does it emit per second?The planet Venus is different from the earth in several respects. First, it is only 70% as far from the sun. Second, its thick clouds reflect 77% of all incident sunlight. Finally, its atmosphere is much more opaque to infrared light. Calculate the solar constant at the location of Venus, and estimate what the average surface temperature of Venus would be if it had no atmosphere and did not reflect any sunlight.