Your answer is:
<em>The origin, structure, and future of the universe</em>
You can just search up the definition of Cosmology and receive your answer. Hopefully this helps at least a little :3
Depending on the surface area and weight, either can fall slower.
<u>Explanation:
</u>
If you were to drop a feather and a brick off a building at the same height, the brick would reach the ground first. This is due to air resistance and how it slows the feather down compared to the brick. The surface area of the feather creates more resistance compared to its weight, therefore it hits the ground slower. It really all depends on the surface area, weight and the air resistance it creates.
If all air resistance were to be removed, then what would happen is that the two objects would fall and reach the ground at the same time. This is because the objects are in free fall, and because they are in free fall, the two objects would be falling at an acceleration of 9.81 m/s². This is true for all objects in free fall.
<span>For the answer to the question above.
The pressure (the symbol "P") is the force per unit area applied in a direction perpendicular to the surface of an object.
This is from least to greatest: 0.3Pa, 16 N/m2, 311 N.m2, 4kPa</span>
Explanation:
Given:
v₀ = 10 m/s
v = 20 m/s
t = 60 s
Find: v_avg and Δx
v_avg = ½ (v + v₀)
v_avg = ½ (20 m/s + 10 m/s)
v_avg = 15 m/s
Δx = v_avg t
Δx = (15 m/s) (60 s)
Δx = 900 m
Velocity of wave through the oil medium, C = Sqrt (M_b/Sigma)
Where, M_b = Bulk modulus of oil; Sigma = Density of oil
Therefore,
C Sqrt [(1.3*10^9)/(890)] = 1208.58 m/s
Now,
C = d/t, where d = distance = length of pipe; t = time taken.
Therefore,
t = d/C = 20/1208.58 = 0.017 seconds = 0.017*1000 = 17 milliseconds.
