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Olin [163]
3 years ago
15

¿Por qué el concepto de trabajo no es lo mismo para un mecánico y un físico? ¿Cuál es la medida de trabajo que se utiliza en el

campo de la mecánica?
Physics
1 answer:
fgiga [73]3 years ago
8 0

Answer:

Por lo tanto la expresión anterior se menciona que el trabajo mecánico es igual a los cambios de energía cinética del sistema mecánico. Trabajo mecánico y energía potencial. ... "Se realiza un trabajo sobre un cuerpo cuando este se desplaza o deforma por la acción de una fuerza" (definición de trabajo).

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A flat metal washer is heated. As the washer's temperature increases, what happens to the hole in the center? A flat metal washe
STALIN [3.7K]

To solve this exercise it is necessary to take into account the concepts related to thermal expansion.

The thermal expansion is given by the function,

\Delta L = L_0 \alpha \Delta T

Where,

\Delta L= Change in Length

\Delta T =Change in Temperature

\alpha =Coeficiente de dilatación lineal

L_0 = Initial Length

By quickly deducing the formula, we can realize that the greater the change in temperature, the greater the change in the length of the radius.

The change in length is proportional to the change in temperature. Considering that the other two terms are constant we have that the correct one would be: <em>The hole in the center of the washer will expand.</em>

4 0
3 years ago
State Archimedes' principle
OlgaM077 [116]

Explanation:

Archimedes' principle states that the upward buoyant force which is exerted on body when immersed  whether fully submerged or partially in the fluid is equal to weight of fluid which body displaces and this force acts in upward direction at center of mass of displaced fluid.

Thus,

<u>Weight of the displaced fluid = Weight of the object - Weight of object in fluid.</u>

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3 years ago
Are moons 1-4 waxing are waning ?
solong [7]

Answer:

I want to help you but i cant.

Explanation:

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2 years ago
A sonar emits a sound signal of frequency 40000Hz, towards the bottom of the sea.
kap26 [50]

Answer:

0.000025s

Explanation:

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8 0
2 years ago
What happens in terms of energy when a moving car hits a parked car, causing the parked car to move?
meriva
This is an example Newton's Third Law. All the kinectic energy from the moving car transferred the potential energy of the parked car. This potential is not much since the brakes are on (hopefully) and it's not in a non-moving position.
5 0
3 years ago
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