Answer:
a = 64 ft / s²
Explanation:
The force in a spring is given by Hooke's law
F = -k x
Let's use the initial data to calculate the spring constant
k = F / x
Reduscate to the English system
x = 3 in (1foot/12 in) =0.25 foot
k = 0.3 / 0.25
k = 1.2 lb / foot
Now we can use Newton's second law
F = ma
a = F / m
a = -k x / m
m = w / g
m = 0.3 / 32 = 0.009375
x= 6 in (1foot /12 in)= 0.5 foot
a = - 1.2 0.5 / 0.009375
a = 64 ft / s²
Here are the Brief summary of the evolution :
- After earth formed, Volcanoes emtted gas and meteroite brought ice
- Earth cooled and the atmosphere thicken, meanwhile the ocean is also formed
- Cyanobacteria increased the amount of O2
- O2 released into atmosphere and Eukaryotes evolved
hope this helps
"Non-Living" things are known as "Abiotic factor" in the ecosystem.
In short, Your Answer would be: Option A) The Water
Hope this helps!
Answer: 0.6
Explanation:
If we draw a free body diagram of the box we will have the following:
Net force in the x-axis:
(1)
Net force in the y-axis:
(2)
Where:
is the normal force
is the weight of the box
is the force exerted on the box
is the angle below the horizontal
is the friction force, being 
the coefficient of kinetic friction
Isolating from (1):
(3)
Substituting (3) in (2):
(4)
Finding :
(5)
(6)
Finally:
(5)
