All categories

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.

You might be interested in

The purpose of the air filter is to

marishachu [46]

The purpose of an air filter is to purify the air around you removing particles such as dust from the air.

8 0

3 years ago

Read 2 more answers

A viscous liquid of constant density 500 kg/m3 and viscosity 10 Pa s falls down with constant velocity due to gravity in a long

Alekssandra [29.7K]

Answer:

$\tau=$ 2452.5 N/m^2

Explanation:

given:

density $\rho$ =500kg/m^3

viscosity $\mu$ = 10 Pa-s

diameter of tube= 2 m

and L be length

since gravity is the only force shear force will balance it

so we can write

mg= $\tau\times A$

A= $\rho\times\frac{\pi}{4} d^2\times L$

m= $\rho\times\frac{\pi}{4} d^2\times L$

therefore

$\rho\times\frac{\pi}{4} d^2\times Lg= \tau\times{\pi} d\times L$

putting values we get

$\ 500\times\frac{\pi}{4} 2^2\times g= \tau\times{\pi}\times 2$

calculating we get $\tau=$ 2452.5 N/m^2

6 0

3 years ago

To get an idea of the order of magnitude of inductance, calculate the self-inductance in henries for a solenoid with 1500 loops

valkas [14]

Answer:

The self-inductance in henries for the solenoid is 0.0274 H.

Explanation:

Given;

number of turns, N = 1500 turns

length of the solenoid, L = 13 cm = 0.13 m

radius of the wire, r = 2 cm = 0.02 m

The self-inductance in henries for a solenoid is given by;

$L = \frac{\mu_oN^2A}{l}$

where;

$\mu_o$ is permeability of free space = $4\pi*10^{-7} \ H/m$

A is the area of the solenoid = πr² = π(0.02)² = 0.00126 m²

$L = \frac{4\pi *10^{-7}(1500)^2*(0.00126)}{0.13} \\\\L = 0.0274 \ H$

Therefore, the self-inductance in henries for the solenoid is 0.0274 H.

8 0

3 years ago

Overtime how did matter and energy in a system naturally change in physics

Phantasy [73]

The movement of energy and matter in a system differs from one system to another. ... On the other hand, in open system both the matter and energy move into and out of the system. Therefore, matter and energy in a system naturally change over time will decrease in entropy. Hope this helped

7 0

3 years ago

An object initially at rest breaks into two pieces as the result of an explosion. One piece has twice the energy of the other pi

Butoxors [25]

M₁V₁ = m₂V₂
KE = ½mV² 
½m₁V₁² = 2*½m₂V₂² 

m₁V₁ = m₂V₂ 
½m₁V₁² = m₂V₂² 

m₁/m₂ = V₂/V₁ 

m₁/m₂ = 2V₂²/V₁² 
V₂/V₁ = √(½m₁/m₂) 

m₁/m₂ = √(½m₁/m₂) 
squaring
(m₁/m₂)² = ½m₁/m₂ 

2m₂m₁² = m₁m₂² 
divide by m₁m₂ 
2m₁ = m₂ 
m₂/m₁ = 2
hope this helps

4 0

3 years ago