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Amiraneli [1.4K]
3 years ago
14

Definition of artficial and natural radioactivity​

Physics
2 answers:
Genrish500 [490]3 years ago
8 0
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Featured snippet from the web
The spontaneous emission of radiations from an unstable nuclei is known as natural radioactivity. on the other hand, The process of emission of radiations from naturally occurring isotopes when they are bombarded with sub-atomic particles or high levels of X-rays or gamma rays called artificial radioactivity.
leva [86]3 years ago
3 0

Answer:

The key difference between natural and artificial radioactivity is that natural radioactivity takes place on its own in nature whereas when it is induced by man in laboratories, it is called artificial radioactivity.

Explanation:

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A friend tells you that a lunar eclipse will take place the following week, and invites you to join him to observe the eclipse t
WARRIOR [948]

Answer:

y = 80.2 mille

Explanation:

The minimum size of an object that can be seen is determined by the diffraction phenomenon, if we use the Rayleigh criterion that establishes that two objects can be distinguished without the maximum diffraction of a body coincides with the minimum of the other body, therefore so much for the pupil of the eye that it is a circular opening

          θ = 1.22 λ/ d

in a normal eye the diameter of the pupils of d = 2 mm = 0.002 m, suppose the wavelength of maximum sensitivity of the eye λ = 550 nm = 550 10⁻⁹ m

         θ = 1.22 550 10⁻⁹ / 0.002

         θ = 3.355 10⁻⁴ rad

Let's use trigonometry to find the distance supported by this angle, the distance from the moon to the Earth is L = 238900 mille = 2.38900 10⁵ mi

       tan θ = y / L

       y = L tan θ

       y = 2,389 10⁵ tan 3,355 10⁻⁴

       y = 8.02 10¹ mi

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This is the smallest size of an object seen directly by the eye

5 0
3 years ago
Help please I don't understand this
BARSIC [14]
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4 0
3 years ago
Which statement best explains why atoms form chemical bonds with other atoms?
Alex73 [517]
Because atoms is something that pops or has bubbles in it
7 0
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A machine whose efficiency is 75% is used to lift a load of 100m.calculate the effort put into the machine if it has a velocity
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Explanation:

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A. Which of the four thermal processes describes the pressure-volume relationship at a constant temperature?
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3 years ago
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