Answer:
Getting an after-school job and convincing friends to get a job too.
Explanation:
The time it takes for 1g of strontium-90 to decay to 250 mg is; 57.6 years
<h3>What is the half life of an element?</h3>
The formula for half life is;
A(t) = A₀ * (¹/₂)^(t/t_1/2)
Where;
A(t) is amount left after t years
A₀ the initial quantity of the substance that will undergo decay;
t_1/2 is the half-life of the decaying quantity.
We are given;
t_1/2 = 28.8 years
A₀ = 1 g
A(t) = 250 mg = 0.25 g
Thus;
0.25 = 1 * (¹/₂)^(t/28.8)
log 0.25 = (t/28.8) log (1/2)
-0.60206 = (t/28.8) * -0.3010
t = 2 * 28.8
t = 57.6 years
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Answer:
No humidity, constant cool temperature, serenity and calmness, and no crowds or lcrowd noises Camping in a cave is in many ways a lot more challenging than even the most dangerous places for sleeping outdoors.
Answer:
C. The Workers
Explanation:
Communism is a political and economic system that seeks to create a classless society in which the major means of production, such as mines and factories, are owned and controlled by the public.
The impact of migration from 2010 to 2017 created a large increase in immigrants in the continents of Africa and Europe.
During 2010-17 due to the expansion of population there was growth of slums and asylums.
- Most of the sub-Saharan moved to the European Union nations such as Norway and Sweden. Thus an over a seven-year period these refugees Most of the migrants came from Nigeria, Ghana, and Kenya.
- The possible impacts that the migrants made were seen in terms of financial support and gains.
Hence option B is correct, as more emigrants sent money home, this money helped in the growth of their country of origin.
Learn more about the From 2010 through 2017 there was a large increase in the number of migrants from Africa to Europe.
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