Answer:
3Q / 4 pi (R^3 - r^3)
Explanation:
Charge density = charge / volume
volume of a spherical shell = 
Answer:
1.05045 kg/m³
Explanation:
= Density of air = 1.26 kg/m³
= Density of hot air
= Mass of balloon = 539 kg
g = Acceleration due to gravity = 9.81 m/s²
v = Volume of air in balloon = 
The net force on the balloon will be
Also
The density of hot air inside the envelope is 1.05045 kg/m³
Answer:
Atoms form chemical bonds to satisfy the Octet rule and become Stable element.
Explanation:
- Every atom desires to achieve total eight valence electron in their outermost shell to become stable. This rule is known as octet rule.
- During the chemical reaction process, every element goes through the process of receiving or donating the element to complete the octet rule to become stable.
- The electronic configuration of element having eight electrons in its valence shell is the noble gases.
Using the Pythagorean theorem
a^2 = b^2 + c^2
when a is the hypotenuse, and b and c are opposites and adjacent in a right triangle
3^2 + 4^2 = 5^2
Therefore, the hypotenuse has a magnitude of 5
