Question

The Sun has a temperature of 5780 K. What is the wavelength and frequency where its...

The Sun has a temperature of 5780 K. What is the wavelength and frequency where its spectrum peaks? Which color does this correspond to? How does the energy flux of the Sun compare that of a red dwarf whose temperature is a mere 2,000 K, and is of the same size?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A star has a surface temperature of 4500 K. a. Calculate the peak wavelength of its...
A star has a surface temperature of 4500 K. a. Calculate the peak wavelength of its brightness vs. wavelength curve. [1.5 points] b. What color does this wavelength correspond to? (Note: See p. 5-7 of the textbook for a list of colors corresponding to different wavelength ranges. If the wavelength is in the infrared or ultraviolet range, state “IR” or “UV” as the color.) [0.5 points] c. Now imagine that the star is moving away from us at 0.15c, where...
Problem 1: The core of the Sun has a temperature of 1.5 × 107 K, while...
Problem 1: The core of the Sun has a temperature of 1.5 × 107 K, while the surface of the Sun has a temperature of 4910 K (which varies over the surface, with the sunspots being cooler). Treat the core of the Sun and the surface of the Sun as two large reservoirs connected by the solar interior. Nuclear fusion processes in the core produce 3.8 × 1026 J every second. Assume that 100% of this energy is transferred from...
Giant planets form beyond the frost line, where the equilibrium temperature is 150 K. The most...
Giant planets form beyond the frost line, where the equilibrium temperature is 150 K. The most common type of star that produces energy by nuclear fusion is a red dwarf star. A typical red dwarf star has a radius that is 0.5 times the solar radius, and a surface temperature that is 3600 K. What is the distance to the frost line for a red dwarf star, in AU? Assume the albedo is 0 for the planetesimals.
Violet light has a wavelength of about 410 nm. a. What is its frequency? b. Calculate...
Violet light has a wavelength of about 410 nm. a. What is its frequency? b. Calculate the energy of one photon of violet light c. What is the energy of 1.0 mol of violet photons (hint: 1 mol=6.02*10^23) d. Compare the energy of photons of violet light with those of red light (700nm). Which has the greater energy?
Recall from your homework last week that the lowest-mass stars are called "M-dwarfs", which have masses...
Recall from your homework last week that the lowest-mass stars are called "M-dwarfs", which have masses and diameters that are typically 1/5th that of the Sun.  These stars are also much cooler than the Sun.  The temperature of a typical M-dwarf star is approximately 3,000 K.   (i) Calculate the wavelength of maximum intensity for the emission from an M-dwarf and compare it to that of the Sun (TSun = 5,800 K).   (ii) Sketch the thermal spectrum of each star together on the...
Stars emit radiation whose spectrum is very similar to that of a blackbody. Imagine two stars...
Stars emit radiation whose spectrum is very similar to that of a blackbody. Imagine two stars identical in size, each of which is at the same distance from us. One of the stars appears reddish in color, while the other one looks distinctly bluish. Based on this information, what can you say about the relative temperatures of the two stars? Which is the hotter? The relative temperature of a star that is red in color is higher than that of...
In music, middle C has a frequency of about 256 Hz - the precise frequency depends...
In music, middle C has a frequency of about 256 Hz - the precise frequency depends on the tuning scheme. a)How does the wavelength of a middle C note propagating through air compare to the size of a typical human body? b)How does the wavelength of the same note propagating through water compare to the human body? c)What frequency of sound in air has a wavelength nearly the size of a human head?
The Sun has an effective temperature of 5773 K. Assuming it is a perfect thermal emitter...
The Sun has an effective temperature of 5773 K. Assuming it is a perfect thermal emitter a) determine its B-V color. Assume that the B filter covers 400 nm - 500 nm, and the V filter covers 500 nm - 600 nm. b) The Sun's actual B-V color is 0.656. Give a few reasons that this might this be different from your result.
Q: (i) Neutron wavelength: Calculate the wavelength of thermal neutrons at (a) room temperature and (b)...
Q: (i) Neutron wavelength: Calculate the wavelength of thermal neutrons at (a) room temperature and (b) cooled to 4 K (liquid He temperature). How do these compare with 400 keV electrons and to typical Brehmmstrahlung radiation from an x-ray tube (ii) Thermal velocities, de Broglie wavelength: A thermal neutron has a kinetic energy of 3/2 kT, where T is room temperature, 300 K. i.e. these neutrons are in thermal equilibrium with their surroundings. (a) Calculate the thermal velocity of such...
The wavelength of peak emission from any star is related to the temperature of its photosphere...
The wavelength of peak emission from any star is related to the temperature of its photosphere (i.e., the emitting surface) by Wien’s Law, given by λ = 2,900/T, where λ is the wavelength in micrometers (1 µm = 10-6 m), and T is the temperature of the star in Kelvin (see textbook’s figure 3.27 for help). Answer the following questions using the above equation. 2.1. The most massive star ever observed is a Wolf-Rayet type-star, named R136a1. It is so...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT