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creativ13 [48]
3 years ago
6

Define Velocity with an example​

Physics
2 answers:
kolbaska11 [484]3 years ago
8 0

Velocity stands for Displacement w.r.t time

\\ \bull\tt\longmapsto Velocity=\dfrac{Displacement}{Time}

Or

\\ \bull\tt\longmapsto v=\dfrac{ds}{dt}

  • It has units m/s.
asambeis [7]3 years ago
3 0

\pmb{\large{Velocity} }

  • The meaning of velocity of an object can be defined as the rate of change of the object’s position with respect to a frame of reference and time.

  • It might sound complicated but velocity is basically speeding in a specific direction.

  • It is a vector quantity, which means we need both magnitude (speed) and direction to define velocity.

  • The SI unit of it is meter per second (ms-1). 
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Which process is represented by the PV diagram?
Reika [66]

Hi!


The answer would be A. Isobaric Process


<h3>Explanation:</h3>

Isobaric process is a process where the pressure inside a system remains unchanged. In the Pressure Volume graph given, you can see that the pressure (y axis) remains constant with an increasing volume ( x axis). An example of this would be heating a container with a movable piston. Now, the degree of pressure is dependent on the frequency of collisions of particles inside a system on the walls. If this frequency changes, the pressure changes (proportionally). In our example, heating a container with a movable piston results in the particles inside the container to gain kinetic energy and move faster, meaning an increased frequency of collisions (higher pressure), but at the system time the increase in pressure results in the piston being pushed outwards, causing the volume of the container to increase. This results in decreased frequency of collision of the particles with the walls of the container (lesser pressure). This results in the a zero net effect on the pressure.


Hope this helps!

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3 years ago
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ASHA 777 [7]
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8 0
3 years ago
Diferencia entre transferencia y transformación de energía. Da ejemplos de cada caso.
Firdavs [7]

Answer:

La transformación de energía es un proceso en el que la energía se intercambia entre un sistema y el medio ambiente en al menos dos formas de energía diferentes entre sí. Por ejemplo, un panel solar convierte la energía lumínica en energía eléctrica.

En cambio, en la transferencia de energía, esta no cambia su forma sino que es transmitida de un cuerpo a otro. El ejemplo más claro es el de la fogata, que transmite calor al medio ambiente a través de radiación.

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bagirrra123 [75]

Answer:

C. My soup will cool down because of radiation.

Explanation:

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The heat then only flows through radiation.

Therefore, the soup will not cool down because of convection or conduction by because of radiation.

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Thepotemich [5.8K]
This would be a physical change because it can change back to its original form. This is like ripping paper. You can piece it back together and it still is paper.

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