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lisov135 [29]
3 years ago
10

A can bavelling at 90kma/hr

Physics
1 answer:
Readme [11.4K]3 years ago
5 0

Answer:

20 mins

Explanation:

To go 90 km it takes =60 mins(1 hr)

" " 1 km it takes =60/90 mins

" " 30 km it takes =60/90 multiplied by 30

= 20 mins

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Alexeev081 [22]

Answer:

is a reflection.

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Explanation:

6 0
3 years ago
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Si tenemos tres cubos del mismo tamaño (hierro, madera e icopor). ¿Qué diferencias puede encontrar entre ellos?
cricket20 [7]

Answer: La diferencia es el peso (o la masa), siendo que el cubo de hierro es el mas pesado, después viene el de madera y después el de icopor.

Explanation:

Ok, los 3 cubos tienen el mismo tamaño, lo que implica que tienen el mismo volumen.

Ahora es útil recordar la relación:

Densidad = masa/volumen.

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Nosotros sabemos que la densidad del hierro es mas grande que la de la madera, y la densidad de la madera es mas grande que la del icopor.

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masa*gravedad = peso

podemos saber que el cubo mas pesado es el de hierro, después el de madera y después el de icopor.

Además de esta diferencia, también hay otras que no dependen tanto del tamaño del objeto, como pueden ser las capacidades caloríficas, el como reaccionan a campos eléctricos y cosas así que son triviales, pues son diferentes para casi todos los materiales.

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3 years ago
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I need more to answer this
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Answer:

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