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Zinaida [17]
3 years ago
12

Which transition represents a time when water molecules are moving closer together?

Physics
2 answers:
oee [108]3 years ago
4 0
The best transition between the four options presented to represent a time when water molecules are moving closer together would be A. Frost forms on a window pane.

The closest distance that the water molecules can do is when the water is in the state of being solid. It is known that the solid state of matter has the closest distance from molecule to molecule that when a molecule tries to move, the others move as well creating a vibration and thus producing heat in the process. When they are in a liquid state, they are quite far from each other. In a gas state, they really are far from each. This explains the difference in their characteristics.
Marta_Voda [28]3 years ago
4 0

A. Frost forms on a window pane.



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A horizontal force is applied to a box with a mass equal to 5.5 kg, The graph shows the net force acting on a box as a function
tangare [24]

From the graph, net work done on the box and  the speed of the box when it reaches position x = 8.0 m are 28 Nm and 3.2 m/s respectively

From the question, these are the given parameters;

  • Mass M = 5.5 Kg
  • Position X = 0 to X = 8m

Part A

The net work done will be the area under the graph.

From position X = 2m to X = 8m gives us the shape of a trapezium.

A = 1/2( a + b )h

A = 1/2( 2 + 6 ) x 8

A = 8 x 4

A = 32 Nm

From X = 0 to X = 2 gives us the shape of a triangle.

A = 1/2bh

A = 1/2 x 2 x (-4)

A = -4 x 1

A = -4 Nm

Net Work done = 32 - 4

Net work done = 28 Nm

Part B

Applying the concepts of work and energy to solve for the speed of the box when it reaches position x = 8.0 m

Net Work done = 1/2mV^{2}

Substitute all the necessary parameters

28 = 1/2 x 5.5 x V^{2}

5.5V^{2} = 56

V^{2} = 56/5.5

V^{2} = 10.18

V = \sqrt{10.1818}

V = 3.19 m/s

Therefore, net work done on the box and  the speed of the box when it reaches position x = 8.0 m are 28 Nm and 3.2 m/s respectively

Learn more about work done here: brainly.com/question/8119756

4 0
3 years ago
 In an electrically neutral atom of any element, there are equal numbers of
Alinara [238K]

Answer:

B) Electrons and protons  

Explanation:

Each proton has a positive charge, and each electron has a negative charge. If the atom is electrically neutral, there must be the same number of electrons and protons.

A) and C) are wrong. Neutrons have no charge, so they can't counteract that of the protons or the electrons.

D) is wrong. The atomic number is the number of protons, and the mass number is the number of protons plus neutrons. The neutrons can't  counteract the charge of the protons,

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3 years ago
Which of these describes an endothermic process? (2 points) When lithium is placed in water, the temperature of the container in
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3 0
3 years ago
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Two or more atoms joined into a single particular form a(n)
Yakvenalex [24]
<span>Two or more atoms joined into a single particular form </span><span>a molecule</span>
5 0
3 years ago
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A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction between the lad
pantera1 [17]

Answer: 45.3°

Explanation:

Given,

Length of ladder = l

Weight of ladder = w

Coefficient of friction = μs = 0.495

Smallest angle the ladder makes = θ

If we assume the forces in the vertical direction to be N1, and the forces in the horizontal direction to be N2, then,

N1 = mg and

N2 = μmg

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μsinθ = cosθ/2

sin θ / cos θ = 1 / 2μ

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Tan θ = 1.01

θ = tan^-1(1.01)

θ = 45.3°

3 0
3 years ago
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