Answer:
it's not a website but on insta there's an account that freezes people's phone when you click on their story.
Explanation:
Given that,
Mass of water, m = 5 kg
The temperature increases from 20℃ to 40℃.
Specific heat capacity of water is 4200 J kg⁻¹ k⁻¹
To find,
Heat energy required to raise the temperature.
Solution,
The formula for the heat energy required to raise the temperature is given by :

So, the heat energy required is 420 kJ.
Answer:
Your body is to cold ,blood vessels in the skin contract , and blood flow to the extremities (arms and legs)slows . muscles contract and relax rapidly which generates heat to keep you warm..
Explanation:
Hope this helps :)
It's false because that teacher used someone's content without getting the consent of the owner which can also be referred as a unethical work.