Legend: Legacy of the Dragons Forum

Professional

Location: Möhnesee

101

Wednesday, September 9th 2020, 3:56pm

Quoted from "Atrocitus"

Our Milky Way Galaxy is a spiral galaxy.

correct

Go to the top of the page

Baltazar_Blake [14]

Intermediate

Posts: 199

102

Wednesday, September 9th 2020, 4:14pm

What does the first law of thermodynamics state?

Go to the top of the page

--Arya-- [13]

Forum Noob

Posts: 26

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.

Go to the top of the page

Baltazar_Blake [14]

Intermediate

Posts: 199

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.

Go to the top of the page

Intermediate

105

Wednesday, September 9th 2020, 4:44pm

Example for 4 mechanical waves?

Go to the top of the page

Professional

Location: Möhnesee

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:

Go to the top of the page

Intermediate

107

Wednesday, September 9th 2020, 5:01pm

Correct

Go to the top of the page

Professional

Location: Möhnesee

108

Wednesday, September 9th 2020, 5:20pm

Question:

Woolen clothes keep the body warm because... ?

Go to the top of the page

Baltazar_Blake [14]

Intermediate

Posts: 199

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

Go to the top of the page

Professional

Location: Möhnesee

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"

Go to the top of the page

Intermediate

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.

Go to the top of the page

Intermediate