Answer:
The intensity is
Explanation:
From the question we are told that
The intensity of the unpolarized light is
The angle between the ideal polarizing sheet is
Generally the intensity of light emerging from the first polarizer is mathematically represented as
substituting values
Then the intensity of incident light emerging from the second polarizer is mathematically represented by Malus law as
substituting values
<span>122 g * 4,186 (j/g*°c) * 23°c = 11745.916 j </span>
Answer:
3947.7 kg/m³
Explanation:
The relativistic density can be calculated using below expression;
ρ = ρ' /[√( 1 - v²/c²)]
where,
ρ = Change in Density as a result of motion
ρ'= Actual density of cube
ρ' is given as = 1800 kg/m³
v = Velocity that the cube moves = 0.89c
c = Speed of light
c= 3×10^8 m/s
ρ = ρ' /[√( 1 - v²/c²)]
if we substitute the given values we have
ρ= 1800/ √ 〈1- 0.89c²/ c²〉
ρ=3947.7 kg/m³
Hence, the cube's density is 3947.7 kg/m³
Long wavelengths and low frequencies.