The refractive index of a medium is independent of (not related to) the angles of incidence or refraction. It's just a property of the medium. <em>(D)</em>
Answer:
Ionic compounds dissolve in water if the energy given off when the ions interact with water molecules compensates for the energy needed to break the ionic bonds in the solid and the energy required to separate the water molecules so that the ions can be inserted into solution.
By using the coefficient of linear expansion, the increase in the length of the metal plate is by 0.015m and in the area is by 0.3074
.
The rate of change in length of a metal per degree change in temperature is known as the coefficient of linear expansion.
Given:
Coefficient of linear expansion, α = 29 x
/k
Length, L1 = 10m
T1 = 25℃
T2 = 78℃
ΔT = 78 – 25 = 53℃
To find:
Change in length (ΔL) and area (ΔA) of metal plate = ?
Formula:
ΔL = α L1 ΔT
ΔA = A1 2 α ΔT
Calculations:
ΔL = 29 x
x 10 x 53
ΔL = 0.01537m
ΔA = 100 x 2 x 29 x
x 53
ΔA = 0.3074![m^2](https://tex.z-dn.net/?f=m%5E2)
A2 = 100.3074![m^2](https://tex.z-dn.net/?f=m%5E2)
Result:
The increase in the length and area is by 0.015m and 0.3074
respectively.
Learn more about Coefficient of linear expansion of metals here:
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B, do earthworms prefer bright light or darkness!
Answer:
It can travel in various wavelengths. brainliest?
Explanation: