Diffusion occurs faster in gases than in liquids because _____.
2 answers:
Answer:
the particles are moving faster
Explanation:
As we know that diffusion means the rate of escape of gas from small opening.
So here the diffusion rate is basically related to the speed of gas molecules to escape out of the closed container.
So here rate of diffusion is given as
so it depends on pressure of gas and density of gas.
Also we know that gas molecules are loosely bounded to each other as we compare the bonding between molecules of liquid.
So here we will say that correct answer is
the particles are moving faster
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Answer:
a) T² = () r³
b) veloicity the dependency is the inverse of the root of the distance
kinetic energy depends on the inverse of the distance
potential energy dependency is the inverse of distance
angular momentum depends directly on the root of the distance
Explanation:
1) for this exercise we will use Newton's second law
F = ma
in this case the acceleration is centripetal
a = v² / r
the linear and angular variable are related
v = w r
we substitute
a = w² r
force is the universal force of attraction
F =
we substitute
w² =
angular velocity is related to frequency and period
w = 2π f = 2π / T
we substitute
the final equation is
T² = () r³
b) the speed of the orbit can be found
v = w r
v =
v =
in this case the dependency is the inverse of the root of the distance
Kinetic energy
K = ½ M v²
K = ½ M GM / r
K = ½ GM² 1 / r
the kinetic energy depends on the inverse of the distance
Potential energy
U =
U = -G mM / r
dependency is the inverse of distance
Angular momentum
L = r x p
for a circular orbit
L = r p = r Mv
L =
L =
The angular momentum depends directly on the root of the distance