If the temperature of an iron sphere is increased
1 answer:
<h2>Answer: its density will decrease</h2>
By increasing the temperature of the iron sphere, its volume will increase (due to the material of which it is composed), this is a phenomenon known as<em> thermal dilation</em>. However, the mass of the sphere will remain the same.
On the other hand, density is a characteristic property of substances and materials and is defined as the relationship between the mass
and volume
of a specific substance or material, as shown below:
This means <u>density is inversely proportional to volume</u>. Therefore, increasing the temperature of the iron sphere, its volume will be increased and <em><u>its density will be decreased</u></em>.
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Answer:
El valor de la fuerza que debe ejercer la persona C debe ser de -2 para que la caja esté en equilibrio físico.
Explanation:
Si la caja debe hallarse en equilibrio físico, entonces se debe satisfacer la siguiente ecuación:
(1)
Si sabemos que y
, entonces el valor de la fuerza que debe ejercer la persona C debe ser:
El valor de la fuerza que debe ejercer la persona C debe ser de -2 para que la caja esté en equilibrio físico.