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3 years ago

What is the role of the air spaces in insulating materials? Select all that apply.

Physics

2 answers:

vladimir2022 [97]3 years ago

6 0

They put gaps between the particles to slow down conduction

They make the material thicker so energy has to travel a further distance.

ella [17]3 years ago

3 0

Answer:The correct answers are:

1. They trap heat in the spaces.

2. They puts gaps between the particles to slow down conduction.

3.The make the material thicker so energy has to travel a further distance.

Explanation:

Insulating materials are those substance which opposes the flow of current through them and makes up bad conductor. There are air spaces present between these substances which :

Traps the heat in the spaces so that movement of energy can be prevented.
These spaces put gap between the particles of substance so that conduction of heat can be prevented.
Makes the material thick so that energy has to travel longer distance so that energy get lost or distributed in an insulator.

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3 years ago

A vertical straight wire 35.0 cmcm in length carries a current. You do not know either the magnitude of the current or whether t

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Question #6

Novay_Z [31]

The two points on a periodic wave in a medium are said to be in phase if they have the same amplitude and are moving in the same direction.

Option 4.

Explanation:

A periodic wave is termed for waves which flow in a repetition pattern in a given time scale. Periodic wave can also be termed as a transverse wave. So a transverse wave have various crests and troughs. The two successive crests and two successive troughs are said to be in phase with each other.

Thus, for a periodic wave in a medium, the in phase can be obtained in two points which have the same amplitude and are moving in the same direction.

As amplitude is a scalar quantity and so direction should be taken into consideration for making the points related to successive crests only in phase with themselves. Also this also relates the points related to successive troughs to be in phase with each other. But a crest and a trough will not be in phase with each other.

Thus, option 4, that is the two points on a periodic wave in a medium are said to be in phase if they have the same amplitude and are moving in the same direction.

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3 years ago