Answer:
The answer s below
Step-by-step explanation:
a) The element is going to stay as a liquid if its temperature (t) is within the range: melting point ≤ t < boiling point.
Therefore the inequality for each element is given as:
For Gold:
1064 ≤ t < 2856
For Copper:
1085 ≤ t < 2562
For Iron:
1538 ≤ t < 2861
For lead:
327 ≤ t < 1749
and for Aluminium:
660 ≤ t < 2519
b) To get the element that would be liquid for the longest time, we need to calculate the difference between the melting and boiling points (i.e boiling point - melting point).
For Gold:
Difference = 2856 - 1064 = 1792°
For Copper:
Difference = 2562 - 1064 = 1498°
For Iron:
Difference = 2861 - 1538 = 1323°
For lead:
Difference = 1749 - 327 = 1422°
and for Aluminium:
Difference = 2519 - 660 = 1859°
Since Aluminium has the largest difference between the melting and boiling points, hence it will remain liquid for the longest amount of time.
c) The element with the smallest difference between the melting and boiling points would reach the boiling point first. Therefore iron with a difference of 1323° would reach its boiling point first.
The change in grandpa Ernie's height each year is equal to 0.6cm.
As given in the question,
Number of years for which grandpa's height is shrinking = 4 years
The total decrease in height after four years is equal to 2.4cm.
Let x represents the decrease in height each year
The required equation to calculate decrease in height each year is given by:
4x = 2.4
⇒ x= 2.4 /4
⇒x = 0.6cm
Therefore, the change in grandpa Ernie's height each year is equal to 0.6cm.
The complete question is :
Grandpa Ernie is shrinking over the past four years his height decreased by a total of 2.4 cm it decrease by the same amount each year what was the change in grandpa Ernie’s height each year.
Learn more about height here
brainly.com/question/10726356
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Answer 17.5
You take a and b multiple each by its self to find c^2 then find its square root then that’s the answer
Answer:
To my understanding the tax should be $2.70
I hope this helped! :)