Respuesta :
The speed of the plane at the end of the runway is 59.065 m/s.
Evaluation :
The equations of position and velocity in function of time of an object moving in a straight line together constant acceleration are the following:
x = x₀ + v₀ · t + 1/2 · a · t²
v = v₀ + a · t
Where:
x = position of the plane at time t.
x₀ = initial position.
v₀ = initial velocity.
t = time.
a = acceleration.
v = velocity of the plane at time t.
If we place the origin of the frame of reference at the starting point, then x₀ = 0. Since the plane originate from rest, v₀ = 0. Then, the equation gets reduced to this:
x = 1/2 · a · t²
Let's find how much time it takes a plane to travel 500 m:
500 m = 1/2 · 6.99 m/s² · t²
2 · 500 m / 6.99 m/s² = t²
t = 8.45 s
Now, let's use the equation of velocity to solve the speed of the plane at t = 8.45 s (the time at which the plane is at the end of the runway):
v = v₀ + a · t (v₀ = 0)
v = a · t
v = 6.99 m/s² · 8.45 s
v = 59.065 m/s
The speed of the plane at the end of the runway is 59.065 m/s.
What happens when electric flux is zero?
This leads us to the Gauss's Law, which says that the electrical flux going through a closed surface, is that the sum of all charges Q inside that closed surface, divided by permittivity of free space E0. If that flux is zero, meaning there is no net charge inside the shape.
What is a electric flux in closed surface?
The net flux through a closed surface is a quantitative measure of the net charge inside a closed surface. 2. the web electric flux through any closed surface surrounding a net charge 'q' is independent of the shape of the surface.
For which surface electric flux will be zero?
The flux of an electrical field through a closed surface will be always zero if and only if there is no net charge in the volume enclosed by the surface. the quantity of electric flux is always proportional to the charges inside the surface
Learn more about electric flux :
brainly.com/question/2664005
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