The horizontal branch (HB) is a stage of stellar evolution that immediately follows the red-giant branch in stars whose masses are similar to the Sun's. Horizontal-branch stars are powered by helium fusion in the core (via the triple-alpha process) and by hydrogen fusion (via the CNO cycle) in a shell surrounding the core. The onset of core helium fusion at the tip of the red-giant branch causes substantial changes in stellar structure, resulting in an overall reduction in luminosity, some contraction of the stellar envelope, and the surface reaching higher temperatures.
From the forces equation I can only understand from it that the forces' equations are:##N=Mg## and ##T\sin \theta=m\ell \ddot{\theta}##.
But I don't know how to find the Torques' equations.
Any help is appreciated.
N=Mg ##Tcosθ+N=mg
Hi everyone,
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hey i don't understand why my answers are incorrect, here is my solution i would like if someone can help me understand what I am doing worng and how i should solve this problem
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r = 2.5
l=10 cm
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g=9.81
m2g=m1a,
a=(m2/m1)g=0.8g
F=0.8g x (M+m1+m2)= 0.8g x (21+5+4)= 0.8g x 30= 235.44 N.
The answer key however indicate that the answer is 392N. This made me think that the tilt of m2 has something to do with it, but I can't see how much it will make F larger than the above answer.
For ##x=-1## to be an *horizontal* inflection point, the first derivative ##y'## in ##-1## must be zero; and this gives the first condition: ##a=\frac{2}{3}b##.
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Hello,
I need advice which lens should I use for correction of horizontal astigmatism in anamorphics lens which contains two prisms.
Focal length which I need to be focused is about 3 meters.
I am using this prisms pair with projector. When I display grid horizontal lines are not focused...
re: https://www.physicsforums.com/threads/is-it-possible-to-solve-for-t.996132/post-6421205
https://www.physicsforums.com/threads/is-it-possible-to-solve-for-t.996132/post-6421230
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Ok this is what I posted on MeWe in MathQuiz
I'm pretty sure this can be solved just by a quick look at the powers
But probably I could of explained it better
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