Este problema indica el volumen deseado de una solución (250 cm³) cuya concentration es de 5 g/L y pregunta la cantidad de sal que se debe disolver.
De este modo, dado que el volumen y la concentración están en distintas unidades, debemos convertir una de ellas a la de la otra, en este caso los cm³ a L como se muestra a continuación:
[tex]250cm^3*\frac{1L}{1000cm^3}= 0.250L[/tex]
Seguidamente, multiplicamos el volumen previamente obtenido por la concentración con el fin the encontrar los gramos de sal:
[tex]0.250L*5\frac{g}{L} \\\\=1.25 g[/tex]
Así, esto indica que se deben disolver 1.25 gramos de sal para este requerimiento.
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-has no dependence on temperature
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-requires a medium to propagate
-does not require a medium to propagate
requires a medium to propagate
Explanation:
due to radiation z a dispersion of light ray into different multiple
The photo shows a Newton's cradle. The ball on the left can be pulled away
from the others. After the ball is released, it strikes the next ball in line and
the ball on the far right side of the toy moves up and away,
What most likely explains the motion of the ball on the far right?
A. The mechanical energy of the ball on the left is transferred in the
form of waves to the ball on the right
B. The potential energy of the ball on the left is transferred directly to
the ball on the right
C. The potential energy of the ball on the left is transferred in the
form of waves to the ball on the root
D. The mechanical energy of the ball on the left is transferred through
the other balls to the ball on the right
The characteristics of the conservation of energy and momentum allow to find the result for the movement of the balls, the correct answer is:
D. The mechanical energy of the ball on the left is transferred through
the other balls to the ball on the right.
Mechanical energy is the sum of the kinetic energy and the potential energies. In the case that there is no friction, the mechanical energy is conserved.
The momentum is defined by the product of the mass and the velocity of the body, in an isolated system the momentum is conserved and the shocks can be of two types:
Inelastic. Where part of the energy is transformed into internal energy and the kinetic energy is not conserved. Elastic. Where kinetic energy is conserved.
In the case indicated, when removing the ball, it gains a height, therefore if the initial mechanical energy is
Em₀ = mgh
When it reaches the lowest point, just before it hits the ball its energy is:
[tex]Em_f[/tex] = 1 / 2m v²
Em₀ = Em_f
v = [tex]\sqrt{2gh}[/tex]
collides with the other ball and transfers its momentum in an elastic collision, the balls do not stick, as all the energy of the ball is kinetic, this energy is transferred to each ball until it reaches the last one, where the kinetic energy is transformed into potential energy a increases its height.
Let's analyze the answers:
A. False. This is a collision of particles there are no waves.
B. False. At the lowest point the ball on the left has kinetic energy.
C. False. It is a collision of particles, there are no waves.
D. True. The energy from the elastic collisions is transferred through each ball until it reaches the last ball.
In conclusion, using the characteristics of the conservation of energy and momentum, we can find the result for the movement of the balls, the correct answer is:
D. The mechanical energy of the ball on the left is transferred through the other balls to the ball on the right
Learn more here: brainly.com/question/3920210
