Answer:
50 N/m
Explanation:
When a spring is stretched by a force, the relationship between the force applied and the stretching of hte spring is
where
F is the force applied
k is the spring constant
x is the stretching of the spring
In this problem, we have:
F = 5.0 N is the force applied to the spring
x = 10 cm = 0.10 m is the stretching caused by the force
Solving for k, we find:
Answer:
Increase 9 times
Explanation:
We have Newton formula for attraction force between 2 objects with mass and a distance between them:
where is the gravitational constant.
is the masses of the 2 objects. and R is the distance between them.
Since the force is inversely proportional to the distance squared, if it is reduced by 3 times, the gravitational force between them would increase by times
Answer:
We have a not significant increase of the population until 1700s or 1800s and then a significant increase growth from these years to the present.
Explanation:
From the figure attached we see the evolution of the human population since early times (1050).
We see that from 1050 until 1750-1850 we have an increase slowly with a low value for the increase per year.
But after these years (1750-1850) we see a considerable increase of the population, like an exponential model.
So then we can conclude in general terms this:
We have a not significant increase of the population until 1700s or 1800s and then a significant increase growth from these years to the present.
