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3 years ago

What creates the van allen belts

Chemistry

2 answers:

Pavlova-9 [17]3 years ago

4 0

Answer:

b. deflection of charged particles

Explanation:

The Van Allen Belt is a region where various atmospheric phenomena occur due to deflection of charged particles in the Earth's magnetic field, discovered in 1958 by James Van Allen, who designed a cosmic ray experiment embarked on the American explorer spacecraft Explorer 1, launched in January 2000. 1958. Van Allen's radiations do not occur, except for rare exceptions, at the poles, but in the equatorial region. These form two ring-shaped belts, centered on the equator. The innermost reaches between altitudes of one thousand and five thousand kilometers, its maximum intensity occurring on average at three thousand kilometers. It consists of highly energetic protons, which originate from the decay of neutrons produced when cosmic rays from outer space collide with atoms and molecules of the earth's atmosphere. Some of the neutrons are ejected out of the atmosphere and disintegrate into protons and electrons as they cross this region of the belt. These particles move in spiral trajectories along force lines of the earth's magnetic field.

Anna71 [15]3 years ago

3 0

Hello there.

<span>What creates the van allen belts
</span>
<span>b. deflection of charged particles
</span>

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If a substance has a half life of 58 years and starts with 500 g radioactive, how much remains radioactive after 30 years?

Vilka [71]

Answer:

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Explanation:

Hello there!

In this case, since the radioactive decay kinetic model is based on the first-order kinetics whose integrated rate law is:

$A=Ao*exp(-kt)$

We can firstly calculate the rate constant given the half-life as shown below:

$k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{58year}=0.012year^{-1}$

Therefore, we can next plug in the rate constant, elapsed time and initial mass of the radioactive to obtain:

$A=500g*exp(-0.012year^{-1} *30year)\\\\A=349g$

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