What's a device that minimizes heat transfer?

Physics

1 answer:

Alisiya [41]2 years ago

5 0

A device that minimizes heat transfer is thermos. Technical name is vacuum flask.

<u>Explanation:</u>

Thermos is a bottle in which vacuum separates it from the surrounding. When the bottle is surrounded by the vacuum, there is a significant minimization in conduction.

The only part that having point of contact with the bottle inside is the thing which holds it in respective place. But there will be a small piece of contact, which will make the inner bottle to conduct heat to a small extent.

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3 years ago

(a) When we rub a plastic rod witha piece of fur, --------------transfer from ----------------to the ------------. In the result

jolli1 [7]

Answer:

Explanation:

When the two dissimilar bodies rubbed together, they the both of the bodies becomes charged. One of the body gets positive charge and the other body gets negative charge.

the positively charged body loses some electrons and the negatively charged body gains some electrons.

According to the properties of charge when the plastic rod is rubbed with the fur, the plastic rod has a tendency to get the negative charge and the fur has a tendency to get positive charge.

So,

When we rub a plastic rod with a piece of fur, electrons--------------transfer from fur----------------to the -------plastic-----. In the result charging fur with -positive-----------charge and plastic rod with-----negative--------charge.