Hi , here are some examples:
An astronomical unit
A parsec
A meter
Answer:
is sugar and water becouse sugar can solote the water
Answer : The final temperature is, 
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.


where,
= specific heat of ice = 
= specific heat of water = 
= mass of ice = 50 g
= mass of water = 200 g
= final temperature = ?
= initial temperature of ice = 
= initial temperature of water = 
Now put all the given values in the above formula, we get:


Therefore, the final temperature is, 
perimeter of a rectangle = 2(L+B)
90=2(L+B)
90/2=L+B
45=L+B