Answer: To solve such problems we need to know about Trigonometry.
Trigonometric functions
where perpendicular is the side of the triangle which is opposite to the angle, and the hypotenuse is the longest side of the triangle which is opposite to the 90° angle.
The value of x is 5√3.
Explanation: Given to us,
the base for the triangle, AB = 5 units,
Hypotenuse for the triangle, BC = 10 units,
∠B = 60°,
Solution
The question can be solved in two ways,
1. Using the Pythagoras theorem,
According to Pythagoras theorem,
substituting the values,
2. using the trigonometric function for ∠B,
for ∠B in ΔABC,
substituting the values,
we know that value of tan(60°) is √3,
Hence, the value of x is 5√3.
The <em>effective nuclear charge</em> is the difference between the atomic number an element and the shielding constant. Hence, the atom which experiences the greatest nuclear charge is Sulphur, S.
<u>Calculating the greatest effective nuclear charge</u>, :
- Z = Atomic number ; S = shielding constant
<u>For Magnesium, Mg</u>:
Z = 12
S = 10
<u>For Aluminium, Al</u>:
Z = 13
S = 10
For Sulphur, , S:
Z = 16
S = 10
Therefore, the atom whuch experience the greatest 
is Sulphur.
Learn more :brainly.com/question/24978746
Answer:
No, order doesn't count as they can chosen in any, 14 ,378
Explanation:
The element that would melt at a higher temperature than the standard temperature is iron (Fe).
<h3>Melting point</h3>
The term melting point refers to the point where a solid is converted to a liquid. A pure substance has a sharp melting point while an impure substance melts over a temperature range.
Metals have a very high melting point hence the element that would melt at a higher temperature than the standard temperature is iron (Fe).
Missing parts:
At standard pressure, which element has a melting point higher than standard temperature?
(1) F2 (3) Fe
(2) Br2 (4) Hg
Learn more about melting point: brainly.com/question/491382
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