<h2>
Answer: 26,8 s</h2>
Explanation:
If we are talking about an acceleration at a constant rate , we are dealing with constant acceleration, hence we can use the following equations:
(1)
(2)
Where:
is the final velocity of the plane (the takeoff velocity in this case)
is the initial velocity of the plane (we know it is zero because it starts from rest)
is the constant acceleration of the plane to reach the takeoff velocity
is the distance of the runway
is the time
Knowing this, let's begin with (1):
(3)
(4)
(5)
Substituting (5) in (2):
(6)
Finding :
This is the time needed to take off
Answer:
Las presión ejercida por los tacos sobre el suelo es 900 libras por pulgada cuadrada.
Explanation:
Según la Física, comprendemos que la presión es igual a la fuerza dividida por área. En este caso, el peso de la persona dividida por área total de los tacos de los zapatos de golf suponiendo una distribución uniforme de la fuerza. Es decir:
(Eq. 1)
Donde:
- Presión, medida en libras por pulgada cuadrada.
- Peso de la persona, medida en libras.
- Cantidad de tacos en los zapatos, adimensional.
- Área del taco, medida en pulgadas cuadradas.
Si conocemos que 
, 
y 
, la presión es:
Las presión ejercida por los tacos sobre el suelo es 900 libras por pulgada cuadrada.
All metals are good conductors.
Hope that helped you.
Since it is a smooth marble and basing from the graph, it has a constant slope, you could just get any two points along the line and get its slope since speed is Δd/Δt. Let the points be (4,6) and (6,9). Thus,
Δd/Δt = (9-6)/(6-4) = 1.5
Thus, the average speed is 1.5 m/s.
C. The work done by the 5500.0 N force on the elevator is 275,000 J.
<h3>
Work done by the applied force</h3>
The work done by the 5500.0 N force on the elevator is calculated as follows;
W = Fd
where;
- F is the applied force
- d is the displacement
W = 5500 x 50
W = 275,000 J
Thus, the work done by the 5500.0 N force on the elevator is 275,000 J.
Learn more about work done here: brainly.com/question/8119756
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