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3 years ago

During conduction, thermal energy is transferred

Physics

1 answer:

Serga [27]3 years ago

7 0

Answer:

from fast-moving to slow-moving particles during particle collisions.

Explanation:

The molecules in every substance are constantly in random motion, which is called thermal motion. This means that they continuously move in random directions with random velocities. In particular, their speed depends on the temperature of the substance: the higher the temperature, the higher the average kinetic energy of the particles, the higher their speed.

However, not all particles move with same speed: some of them move faster, some of them move slower.

Since there are many particles, quite often these particles collide with each other: in the collision, energy is transferred from one particle to another.

In conduction, which is one of the 3 methods of heat transfer (the other 2 being conduction and radiation), the heat is transferred via collision between the molecules.

In particular, according to the laws of thermodynamics, energy is always transferred from particles moving faster (which have therefore more energy) to particles moving slower (which have therefore less energy).

So the correct answer is

from fast-moving to slow-moving particles during particle collisions.

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3 years ago

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jolli1 [7]

Answer:

a) vprom = - 0.6 [m/s] b) ver explicacion c) vf = 10.8 [m/s]

Explanation:

Para poder solucionar este problema debemos completar el enunciado del problema así como la pregunta, realizando una búsqueda en Internet encontramos el enunciado completo, así como la pregunta.

"Una pelota que se desliza hacia arriba por una pendiente se halla inicialmente a 6 m de la parte más baja de dicha pendiente y tiene una velocidad de 4 m/s. Cinco segundos después se encuentra a 3 m de la parte más baja. Si suponemos una aceleración constante, "

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Para facilitar esta solución debemos realizar un esquema del movimiento de la pelota en el plano inclinado. En la imagen adjunta se puede ver un esquema del movimiento de la pelota sobre el plano inclinado en los diferentes tiempos mencionados.

¿cual fue la velocidad media?

La velocidad media se debe calcular utilizando la expresión de velocidad = espacio / tiempo.

$v_{prom}=x/t\\v_{prom}=(3-6)/5\\v_{prom}=-0.6 [m/s]$

¿Cuál es el significado de una velocidad media negativa?

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¿Cuáles son la aceleración media y la velocidad final?

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3 years ago

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jenyasd209 [6]

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4 years ago

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madam [21]

Answer:

The correct answer is

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krek1111 [17]

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