Well at the fourth half-life it would be 6.25% so if you continue calculating the answer would be B.
Explanation:
distance covered in the first part of journey : 120×14 = 1680km
distance covered in second part of journey :
90×10 = 900 km
total distance traveled : 1680+900 = 2580km.
total time taken to complete the journey : 14+10= 24 hrs.
therefore, the average speed of the journey = 2580km/24hr = 107.5 km/h.
hope this helps you.
For the author, science is a field that does not just require the collection and ordering of data about the outside world.
According to the text, science must also be the development of theories about the invisible and non-apparent laws of nature.
<h3 /><h3>What factors drive scientific progress?</h3>
For the author, progress is related to the development of technology, the cultural ideas of society, which change over time, and the logical theories that are developed by scientists.
Therefore, the author proposes a reflection on the challenges of the development of science in today's society, according to the two pillars of physics, which are relativity and quantum theory.
Find out more about scientific studies here:
brainly.com/question/17216882
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Answer:
The amount of workdone by in emptying the tank by pumping the water over the top edge is 
Explanation:
Given that the tank is 6 feet across the top and 5 feet high.
Using the similar triangles.
5r = 3y
Thus; each disc is a circle with area
A = 
The weight of each disc is ;
= 62.4 ×
= 
The distance pumped is 5-y
Thus; the workdone in pumping the tank by pumping the water over the top edge is :
![W = \dfrac{561.6 \pi}{25}[52.083]](https://tex.z-dn.net/?f=W%20%3D%20%5Cdfrac%7B561.6%20%5Cpi%7D%7B25%7D%5B52.083%5D)
The amount of workdone by in emptying the tank by pumping the water over the top edge is
