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 zAquisgran [11] 

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101

Wednesday, September 9th 2020, 3:56pm

Quoted from "Atrocitus"

Our Milky Way Galaxy is a spiral galaxy.


correct

 Wolfriders  Baltazar_Blake [15] 

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102

Wednesday, September 9th 2020, 4:14pm

What does the first law of thermodynamics state?

 --Arya-- [13] 

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103

Wednesday, September 9th 2020, 4:17pm

Quoted from "Baltazar_Blake"

What does the first law of thermodynamics state?
Heat energy cant destroyed or created.It can be transfer.

 Wolfriders  Baltazar_Blake [15] 

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104

Wednesday, September 9th 2020, 4:19pm

Quoted from "--Arya--"

Quoted from "Baltazar_Blake"

What does the first law of thermodynamics state?
Heat energy cant destroyed or created.It can be transfer.
Is correct.

 Atrocitus [5] 

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105

Wednesday, September 9th 2020, 4:44pm

Example for 4 mechanical waves?

 zAquisgran [11] 

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106

Wednesday, September 9th 2020, 4:58pm

Quoted from "Atrocitus"

Example for 4 mechanical waves?



4 different mechanical waves are


Slinky waves
water waves
stadium waves
jump rope waves

So best practise example is surfing on a waves ocean :sneakers:

 Atrocitus [5] 

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107

Wednesday, September 9th 2020, 5:01pm

Correct

 zAquisgran [11] 

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108

Wednesday, September 9th 2020, 5:20pm

Question:

Woolen clothes keep the body warm because... ?

 Wolfriders  Baltazar_Blake [15] 

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109

Wednesday, September 9th 2020, 5:24pm

Quoted from "zAquisgran"

Woolen clothes keep the body warm because... ?


for its properties. These are: THERMAL INSULATOR, HYGROSCOPICITY, ELASTICITY, FELT and HYDROPHOBIC

 zAquisgran [11] 

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110

Wednesday, September 9th 2020, 5:26pm

Quoted from "Baltazar_Blake"

Quoted from "zAquisgran"

Woolen clothes keep the body warm because... ?


for its properties. These are: THERMAL INSULATOR, HYGROSCOPICITY, ELASTICITY, FELT and HYDROPHOBIC


as i found definition of "Thermal insulation is the reduction of heat transfer " the answer is correct

or more easy: "Wool is a bad conductor"

 Atrocitus [5] 

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111

Wednesday, September 9th 2020, 5:30pm

Wool is able to react to fluctuations in your body temperature due to tiny pockets of air within the fibres that circulate heat. This means that wool will keep you warm when your body is cold, and cool when it’s hot.

And keratin, a natural protein in hair or wool, provides increase or decrease temperature.

 Atrocitus [5] 

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112

Wednesday, September 9th 2020, 5:31pm

Oh :(
Guess im late xd

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