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Doss [256]
3 years ago
8

StarsA. begin as protostars, which fire up when they collapse and become denser and hotter.B. create elements by splitting the n

uclei of small atoms into the nuclei of larger atoms.C. have unlimited amounts of fuel and therefore exist indefinitely.D. all explode cataclysmically when they die and contribute their matter to future star generations
Physics
1 answer:
Colt1911 [192]3 years ago
4 0

Answer:

A

Explanation:

Begin as protostars, which fire up when they collapse and become denser and hotter.

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Light of wavelength 559 nm is used to illuminate normally two glass plates 22.1 cm in length that touch at one end and are separ
umka21 [38]

Answer:

M = 222 fringes

Explanation:

given

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using relation

2t=(m+\dfrac{1}{2})\lambda\ \ (m=0,1,2,3...)\\where\ 0\leq t\leq 2r\\m = \dfrac{2t}{\lambda}-\dfrac{1}{2}

m_{max} = \dfrac{2\times 2r}{\lambda}-\dfrac{1}{2}\\m_{max} = \dfrac{2\times 2\times 0.026\times 10^{-3}}{559\times 10^{-9}}-\dfrac{1}{2}

 = 221.79  

 = 221 (approx.)

hence no of bright fringe

M = m + 1

   = 221 +1

M = 222 fringes

6 0
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Which of the following is most likely not a case of uniform circular motion
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Answer:

Motion of a racing car on a circular track

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