![subject](/tpl/images/cats/fizika.png)
Find the radius rrigel of the star rigel, the bright blue star in the constellation orion that radiates energy at a rate of 2.7×1031w and has a surface temperature of 11,000 k. assume that the star is spherical. use σ=5.67×10−8w/m2⋅k4 for the stefan-boltzmann constant and express your answer numerically in meters to two significant figures.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 04:50
Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 05:20
Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1
Answers: 1
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 12:10
Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f
Answers: 2
You know the right answer?
Find the radius rrigel of the star rigel, the bright blue star in the constellation orion that radia...
Questions
![question](/tpl/images/cats/biologiya.png)
Biology, 02.08.2019 19:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
English, 02.08.2019 19:00
![question](/tpl/images/cats/en.png)
English, 02.08.2019 19:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 02.08.2019 19:00
![question](/tpl/images/cats/mat.png)
Mathematics, 02.08.2019 19:00
![question](/tpl/images/cats/biologiya.png)
Biology, 02.08.2019 19:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 02.08.2019 19:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/fizika.png)
Physics, 02.08.2019 19:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 02.08.2019 19:00
![question](/tpl/images/cats/istoriya.png)