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sdas [7]
2 years ago
7

The photograph shows matter changing states. Which statement best describes what happens to the particles of matter during this

change? Tightly-packed particles gain energy, allowing them to move more freely. Particles move more slowly and bump into one another less frequently. Particles pack closely together, giving the matter a definite shape and volume. A loss of energy strengthens the attraction between particles.

Physics
2 answers:
AfilCa [17]2 years ago
6 0
Its a tightly-packed particles gain energy, allowing them to move more freely.
defon2 years ago
4 0

Answer: The correct answer is "Tightly-packed particles gain energy, allowing them to move more freely".

Explanation:

The three states of the matter are: Solid, liquid and gas.

Solid: In the solid state, the particles are tightly packed. The particles of the solid are not free to move. Solids are rigid. They have definite shape and volume.

Liquid: In the liquid state, the particles are loosely packed in comparison to solid. The particles of the liquid are free to move. They do not have definite shape.

Gas: In the gaseous state, the particles are more loosely packed in comparison to liquid. The particles of the gas are more free to move. They do not have definite shape.

In the given photograph, matter is changing its state. Here, ice is solid and it is changing its state. It starts melting after gaining energy from the surrounding. Then, the particles can move more freely.

Therefore, the correct option is "Tightly-packed particles gain energy, allowing them to move more freely".

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What is calculated by speed of light/wavelength?
zhenek [66]
Frequency of oscillation = speed of light/wave length
6 0
3 years ago
A charge enters a uniform magnetic field oriented perpendicular to its path. The field deflects the particle into a circular arc
frozen [14]

Answer:

The new radius is three times the initial radius

Explanation:

The magnetic force is given by the equation

      F = q v x B

Where the blacks indicate vectors, q is the electric charge, v the velocity of the particle and B the magnetic field. The scalar magnitude of this force is

     F = q v B sin θ

Where θ is the angle between the velocity and the magnetic field.

As the force is perpendicular to the velocity, the particle describes a circular motion, using Newton's second law we can find the acceleration that is centripetal.

    F = ma

    a = v² / r

   

   q v B = mv² / r

  R = mv / qB

Let's calculate for the new speed (v₂ = 3v)

  R₂ = (m / qB) 3v

 R₂ = 3 R

 R₂ / R = 3

The new radius is three times the initial radius

7 0
3 years ago
Question 20 of 20
Sphinxa [80]

Answer:

a

Explanation:

hI I

6 0
2 years ago
(b) Can the speed of a rocket exceed the exhaust speed of the fuel? Explain.
muminat

<u>Yes. The speed of a rocket can exceed the exhaust speed of the fuel.</u>

How this is explained?

  • The thrust of the rocket does not depend on the relative speed of the gases or the relative speed of the rocket.
  • It depends on conservation of momentum.

What is conservation of momentum?

  • Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant.
  • Momentum is equal to the mass of an object multiplied by its velocity and is equivalent to the force required to bring the object to a stop in a unit length of time.
  • For any array of several objects, the total momentum is the sum of the individual momenta.
  • There is a peculiarity, however, in that momentum is a vector, involving both the direction and the magnitude of motion, so that the momenta of objects going in opposite directions can cancel to yield an overall sum of zero.

To know more about conservation of momentum, refer:

brainly.com/question/7538238

#SPJ4

4 0
1 year ago
The speed of a nerve impulse in the human body is about 100 m/s. If you accidentally stub you toe in the dark, estimate the time
vodomira [7]

Answer:

0.02 s

Explanation:

Take the (+x) direction to be up.  

The average velocity v during a time interval Δt is the displacement Δx divided by Δt.  

v=Δx/Δt

 =x_f-x_i/t_f-t_i                 (1)

We assume that your height is 1.6m  

Solving [1]

Δt=Δx/v

  = 0.02 s

4 0
3 years ago
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