The hottest ordinary star in our galaxy has a surface temperature of 53,000 K.
What is the peak wavelength of its thermal radiation?
The hottest ordinary star in our galaxy has a surface temperature of 53,000 K. What is...
Q1. Which is the peak wavelength of a blackbody curve for the hottest star? A. 386 nm B. 644 nm C. 483 nm D. you cannot tell, wavelength and temperature are not related Q2. Which temperature star has the longest peak wavelength? A. 6000 K B. 7500 K C. 4500 K D. you cannot tell, wavelength and temperature are not related
Our sun's 5800 K surface temperature gives a peak wavelength in the middle of the visible spectrum. 1. What is the minimum surface temperature for a star whose emission peaks at some wavelength less than 400 nm− that is, in the ultraviolet?
A star has a surface temperature of 4,211 K. What is peak wavelength in nm of the light it emits? Give the answer to two significant figures. Use scientific notation, with one digit to the left and one digit to the right of the decimal point.
= A1. A distant star is determined to have a surface temperature of Tstar - 6000K and a radius of 5.0 x 108 m. A planet named Hydra is detected orbiting this star at a distance of 1.0 x 1011 m and has an albedo of 0.60. [1] (a) At what wavelength is the peak irradiance from this star? [1] (b) What is the total Luminosity of the star? (c) What is the effective temperature of Hydra? (d) The actual...
If one star has a temperature of 5100 K and another star has a temperature of 7709 K, how much more energy per second will the hotter star radiate from each square meter of its surface?
A certain bright star has a temperature of 10,600 K, and is believed to have a radius of order 70 times the radius of the Sun. At what orbital radius would a planet have a flux of radiation comparable to that on our Earth – ie – habitable like the Earth? At this stellar temperature, what colour does the star have?
The universe is filled with thermal radiation, which has a blackbody spectrum at an effective temperature of 2.7 K. What is the peak wavelength of this radiation? What is the energy (in eV) of quanta at the peak wavelength?
The surface of the sun has a temperature of approximately 5800 K. To good approximation we can treat it as a blackbody. (a) What is the peak-intensity wavelength λm? (b) What is the total radiated power per unit area? (c) Find the power per unit area radiated from the surface of the sun in the wavelength range 600.0 to 605.0 nm.
A star has the maximum emission at a wavelength lmax=300 nm. Calculate the surface temperature of the star, assuming that the star behaves like an ideal black body.
The brightest star in the northern celestial hemisphere has a surface temperature of about 4300 K and it is 170 times more luminous than the Sun. Calculate the radius of the star in units of the radius of the solar radius (round the result to the nearest integer) In the calculation, you may assume that the Sun has a radius of 7E8 meters and a luminosity of 3.8E26 watts.