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gizmo_the_mogwai [7]
3 years ago
7

Which of the following statements are true? A solid can diffuse into a liquid, but a solid cannot diffuse into another solid. A

solid can diffuse into both a liquid and another solid. A liquid can diffuse into another liquid. A gas can diffuse into another gas.
Physics
2 answers:
Papessa [141]3 years ago
5 0

A solid can diffuse into a liquid, but a solid cannot diffuse into another solid.

A solid can diffuse into both a liquid and another solid.

skad [1K]3 years ago
3 0

Explanation:

The statements which are true are as follows.

  • A solid can diffuse into both a liquid and another solid.
  • A liquid can diffuse into another liquid.
  • A gas can diffuse into another gas.

When we heat a solid it starts to melt as a result it diffuses into liquid. Whereas when we write with a chalk on a blackboard then the solid particles of chalk disperse on the solid surface of blackboard.

Therefore, a solid can diffuse into solid as well but the rate of diffusion is slow.

When we mix two liquids they tend to mix with each other. As a result, they diffuse into each other.

Similarly, a gas can diffuse into another gas as there is weak force of attraction between gas molecules and high kinetic energy. As a result, rate of diffusion is fast in gases.

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DochEvi [55]

Answer:

just divide 22 N by 20 kg to get the acceleration in m/s2

Explanation:

I hope this is right-

6 0
3 years ago
A tugboat tows a ship with a constant force of magnitude F1. The increase in the ship's speed during a 10 s interval is 5.0 km/h
Ratling [72]

Answer

given,

time  = 10 s

ship's speed = 5 Km/h

F = m a

a is the acceleration and m is mass.

In the first case

F₁=m x a₁

where a₁ =  difference in velocity / time

F₁ is constant acceleration is also a constant.

Δv₁ = 5 x 0.278

Δv₁ = 1.39 m/s

a_1=\dfrac{1.39}{10}

a₁ = 0.139 m/s²

F₂ =m x a₂

F₃ = F₂ + F₁

Δv₃ = 19 x 0.278

Δv₃ = 5.282 m/s

a₃=Δv₂ / t

a_3=\dfrac{5.282}{10}

a₃ = 0.5282 m²/s

m a₃=m a₁ + m a₂

a₃ = a₂ + a₁

0.5282 = a₂ + 0.139

a₂=0.3892 m²/s

F₂ = m x 0.3892...........(1)

F₁ = m x 0.139...............(2)

F₂/F₁

ratio = \dfrac{0.3892}{0.139}

ratio = 2.8

6 0
3 years ago
What change will always result in an increase in gravitational force between two objects
tekilochka [14]

The gravitational force between two object depends on their masses and on their distance.


Since the formula is


F = G\frac{m_1m_2}{d^2}


If the masses grow, the force also grows. But I'm assuming the two objects are fixed, so you can't enlarge their mass.


So, the only option remaining is to lower their distance: since it sits at the denominator, a smaller value of d results in a bigger value for F.


So, if you reduce the distance between two objects, the gravitational force between them will always result in an increase

6 0
3 years ago
Star A and Star B have measured stellar parallax of 1.0 arc second and 0.75 arc second, respectively. Which star is closer? How
zhuklara [117]

Answer:

Star A is closer than Star B

Explanation:

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Here we can say

angle = \frac{1 Parsec}{distance}

so we have

distance = \frac{1 Parsec}{angle}

so here we have

angle subtended by Star A = 1 arc sec

angle subtended by star B = 0.75 arc sec

now we have

distance for star A is given as

d_a = \frac{1 Parsec}{1} = 1 Parsec

distance of star B is given as

d_b = \frac{1 Parsec}{0.75} = 1.33 Parsec

So star A is closer than star B

7 0
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This type of light production is an example of _______ energy being transformed into light energy.
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Electric energy??? there isn't much information from the question but I can infer it's electricity.

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