Answer:
His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.
Explanation:
The number of nuclei that have decayed after three half-lives is 12.5% of the original mass.
<h3>
What is half live of radioactive isotope?</h3>
The half life of a radioactive isotope is the time taken for the element to decay to half of its original mass.
<h3>Number of nuclei decayed after 3 half lives</h3>
N = N₀/(2³)
N = N₀/8
N = 0.125N₀
N = 12.5% of N₀
where;
- N is n number of nuclei that have decayed after 3 half lives
- N₀ is the original mass
Thus, the number of nuclei that have decayed after three half-lives is 12.5% of the original mass.
Learn more about half life here: brainly.com/question/10525285
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Answer:
The force needed will be 5000[N]
Explanation:
Using the Newton's second law we have:
![F = m*a\\where\\F = force [N]\\m = mass [kg]\\a= acceleration [m/s^2]\\Replacing we have\\F = 0.025[kg]*200000[m/s^2]\\F = 5000 [N]](https://tex.z-dn.net/?f=F%20%3D%20m%2Aa%5C%5Cwhere%5C%5CF%20%3D%20force%20%5BN%5D%5C%5Cm%20%3D%20mass%20%5Bkg%5D%5C%5Ca%3D%20acceleration%20%5Bm%2Fs%5E2%5D%5C%5CReplacing%20we%20have%5C%5CF%20%3D%200.025%5Bkg%5D%2A200000%5Bm%2Fs%5E2%5D%5C%5CF%20%3D%205000%20%5BN%5D)
The answer would be:
A, a space station orbiting Earth.
Acceleration is the change in velocity over time
