The height of the building using second equation of motion is 35.721 m
What is the second equation of motion?
In kinematics, equations of motion are referred to as the fundamental principles of an object's motion, including velocity, location, and acceleration that occur at variable time intervals. These three motion equations control motion in all three dimensions of an item.
Second equation of motion: s = ut + a(t^2)/2
where,
s = displacement
u = initial velocity
v = final velocity
a = acceleration
t = time of motion
Given, a = 9.8 m/s/s
t = 2.7 s
Using this equation we find the height of the building,
s = ut + a(t^2)/2
= 0 + 9.8 x 2.7 x 2.7/2
= 71.442/2
= 35.721 m
Hence, the height of the building is 35.721 m
To learn more about equations of motions from the given link
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Answer:
Petroleum ( over 30% energy )
Natural gas ( over 30% energy )
Explanation:
Answer:
(a) σ = 3.41*10⁻7C/m^2
(b) E = 38,530.1 N/C
Explanation:
(a) In order to calculate the resulting surface charge density, you use the following formula:
(1)
σ: surface charge density
Q: charge of the satellite = 3.1 µC = 3.1*10^-6C
S: surface area of the satellite
The satellite has a spherical form, then, the area of the surface is given by:
(2)
r: radius of the satellite = d/2 = 1.7m/2 = 0.85m
You replace the equation (2) into the equation (1) and solve for the surface charge density:

The surface charge density acquired by the satellite on one orbit is 3.41*10⁻7C/m^2
(b) The electric field just outside the surface is calculate d by using the following formula:
(3)
k: Coulomb's constant = 8.98*10^9 Nm^2/C^2
R: radius of the satellite = 0.85m

The magnitude of the electric field just outside the sphere is 38,530.1 N/C
Air resistance, also called drag, acts upon a falling body by slowing the body down to thr point where it stops accelerating, and it falls at a constant speed, known as the terminal volocity of a falling object. Air resistance depends on the cross sectional area of the object, which is why the effect of air resistance on a large flat surfaced object is much greater than on a small, streamlined object.
Answer
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Explanation:v