This diagram shows the process that powers stars. This process is called?
2 answers:
<u>Answer: </u>The correct answer is Option C.
<u>Explanation:</u>
A star is defined as a fixed point in the night sky which illuminates and is very large. the primary element present in stars is Hydrogen and it continuously changes to helium by a process known as Nuclear fusion reaction. This process releases a huge amount of energy.
Nuclear fusion reaction is defined as the combination of lighter nuclei to form a heavy nuclei. In Stars, hydrogen atoms combine to form a helium atom.
The reactions which takes place in stars follows a series of equations:
Overall reaction for the above series of reactions is given by:
Hence, the correct answer is Option C.
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Answer:
W = 290.7 dynes*cm
Explanation:
d = 1/5 cm = 0.2 cm
The force is in function of the depth x:
F(x) = 1000 * (1 + 2*x)^2
We can expand that as:
F(x) = 1000 * (1 + 4*x + 4x^2)
F(x) = 1000 + 4000*x + 4000*x^2
Work is defined as
W = F * d
Since we have non constant force we integrate
W = [1000*x + 2000*x^2 + 1333*X^3] evaluated between 0 and 0.2
W = 1000*0.2 + 2000*0.2^2 + 1333*0.2^3 - 1000*0 - 2000*0^2 - 1333*0^3
W = 200 + 80 + 10.7 = 290.7 dynes*cm