Answer:
The time required by the impulse to travel from foot to brain equals 0.019 seconds
Explanation:
For uniform motion the distance, speed, time are related by the equation
In our case since the person is 1.90 meters tall so the nerve impulse will have to cover a distance of 1.90 meters at a speed of 100 m/s.
Hence the time required for the impulse to travel from foot to the brain can be calculated as
1000 miles = 1 609 340 m
2 weeks = 1209 600 s
v = 1609340/1209600 = 1.33 m/s
It has been proposed that the total number of civilizations that have arisen in our galaxy would be closest to 100,000.
<h3>What is a galaxy?</h3>
A galaxy is a group of stars (solar systems), gas, and dust in a specific position in the Universe.
The Milky Way is the galaxy where we live and it has been proposed that this galaxy is full of dead civilizations.
In conclusion, the total number of civilizations that have arisen in our galaxy would be closest to 100,000.
Learn more about galaxies here:
brainly.com/question/13956361
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Atomic mass is equal to the number of protons and neutrons. Electrons have so little mass that they are practically negligible.
Atomic mass= 4+4= 8 AMU
here we can use energy conservation
like initial kinetic + potential energy is always conserved and it will be same at all points
so we can say
now we can plug in all the given values in it
now divide whole equation by mass "m"
so final speed will be 65.96 m/s