Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 6, Problem 3P
To determine
The temperature of the star's surface.
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Students have asked these similar questions
At what wavelength would a star radiate the greatest amount of energy if the star has a surface temperature of 60,000 K?
a.
50 nm
b.
500 nm
c.
300 nm
d.
1.8 × 1011 nm
e.
180 nm
If a star gives off light at a peak wavelength of 6.80x10-7 m. What would be the temperature of this star in Kelvin?
What is the rate of thermal radiation Emitted from a star with a radius of 2.310 x 10⁹m and a surface temperature of 8,420k? Assume that the spherical surface behaves as blackbody radiator .
Chapter 6 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 6 - Prob. 1RQCh. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 4RQCh. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - Prob. 8RQCh. 6 - Prob. 9RQCh. 6 - Prob. 10RQ
Ch. 6 - Prob. 11RQCh. 6 - How Do We Know? How is the world you see around...Ch. 6 - Prob. 1DQCh. 6 - Prob. 2DQCh. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - If one star has a temperature of 6000 K and...Ch. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 1LTLCh. 6 - Prob. 2LTLCh. 6 - Prob. 3LTLCh. 6 - Prob. 4LTL
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- What is the temperature of a star whose maximum light is emitted at a wavelength of 290 nm?arrow_forwardA distant star has a peak wavelength of 0.00000077. What is the temperature of that star?arrow_forwardA group of four stars, all the same size, have the four different surface temperatures given below. Which of these stars emits the most red light?A. 3000 K B. 4000 K C. 5000 K D. 6000 Karrow_forward
- Infrared observations of a star show that the star is most intense at a wavelength of 280 nm. What is the temperature of the star's surface in kalvins?arrow_forwardThe radius of a star is 6.95 x 10^8 m, and it's rate of radiation has been measured to be 5.32 x 10^26 W. Assuming that it is a perfect emitter, what is the temperature of the surface of this star? (sigma = 5.67 x 10^-8 W/m^2 . K^4)arrow_forwardThe spectral emittance curve for the star Rigel A is a good approximation of the curve for a blackbody. The maximum of this curve is at 239 nm. Find (a) the surface temperature of Rigel A and (b) the power that Rigel A radiates per unit surface area.arrow_forward
- What is the rate of thermal radiation emitted from a star with a radius of 2.310 x 109 m anda surface temperature of 8,420 K? Assume that the spherical surface behaves as a blackbody radiator.[Surface Area of a sphere = 4rr?: Area of a circle = Mr? or (Tt/4)d21arrow_forwardThe sun can be treated as a blackbody at an effective surface temperature of 10,400 R. Determine the rate at which infrared radiation energy (l = 0.762100 mm) is emitted by the sun, in Btu/h·ft2.arrow_forwardOur sun is a standard sequence yellow dwarf star with a temperature of about 6000 K and a radius of about 7 x 10^8 m, emitting about 3.8 x 10^26 W. There are yellow giant stars with the same blackbody color (temperature) but with a radius 10 times larger than our sun (7 x 10^9 m). Estimate the power (emitted radiation) from one of these yellow giant stars. (Hint: how much larger is the surface area of the yellow giant star, and pay careful attention to the power of 10 below.)arrow_forward
- A star is moving toward Earth with a radial velocity (speed directly toward or away from Earth) of 40,000 km/s. If we take a spectrum of this star’s light, will we find it to be red shifted or blue shifted? By what fraction are the wavelengths in this star’s spectrum shifted? [Answer: λ0/λ = 0.88]arrow_forwardA blackbody radiator in the shape of a sphere has a surface area of 18 m2. If it has a temperature of 2200 K how much energy does it emit per second?arrow_forwardThe sun has a luminosity of 3.9 × 1026 W and an angular diameter of θ = 32 arc mins. Assume that the sun is a blackbody. What is its physical radius and its effective temperature?arrow_forward
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