Wassily Kandinsky invented abstract geometry :) have a good week
The answer is 73.13°.
According to snell's law,
n1sinθi = n2sinθr
n1/n2 = sinθr/sinθi
The critical angle is the angle of incidence at the denser medium when the angle of incidence at the less dense medium is 90°
This means i=C and r = 90°
The Snell's law formula will become
n1/n2 = sinC/sin90°
n2/n1 = 1/sinC
Where n1 is the refractive index of the less dense medium = 1.473
n2 is the refractive index of the denser medium = 1.540
Substituting the values in the formula,
1.540/1.473 = 1/sinC
1.045 = 1/sinC
SinC = 1/1.045
SinC = 0.957
C = sin^-1(0.957)
C = 73.13°
The refractive index of glass is 1.5. It way that the velocity of mild in glass is 1.5 times slower than the rate of mild in a vacuum, the speed of light in glass isn't always unbiased of the shade of mild.
Refractive index is likewise the same as the velocity of light c of a given wavelength in an empty area divided with the aid of its speed v in a substance or n = c/v.
The index of refraction of fabric is a ratio that compares the velocity of light in a vacuum ( c=3.00x108ms ) to the velocity of mild in that precise medium. Because the index of refraction increases, the amount that the material bends the mild increases.
Learn more about the index of refraction here brainly.com/question/12469161
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Answer:
H = 5.35 cm
Explanation:
As per energy conservation we know that energy stored in the spring is converted into gravitational potential energy when it is reached at the top
now we have

here we know that
m = 1 kg
k = 105 N/m
x = 0.1 m
now plug in all data in it

now solving for height H we have


Answer: When electricity flows through it.
Explanation:
The electromagnet exhibits magnetic properties only as soon as current flows through the nucleus. Namely, the electric current in the space around the electrical conductor through which it passes creates a magnetic field. Unlike a permanent magnet, which has a permanent property of magnetism, the electromagnet is a temporary magnet because the magnetic field also disappears when the current ceases.
<span>Velocity of Electron V1 = 1.50 Ă—10^6 m/s
Velocity of Electron V2 = 9.00 Ă— 10^6 m/s
We know the mass of electron m = 9.11 x 10^-31
Charge of the electron q = 1.60 x 10^-19
Calculating the potential energy at the two stages,
K1 = 0.5 x m V1^2 = 0.5 x 9.11 x 10^-31 x (1.50 Ă—10^6)^2 = 10.24 x 10^-19
K2 = 0.5 x m V2^2 = 0.5 x 9.11 x 10^-31 x (9.00 Ă—10^6)^2 = 368.95 x 10^-19
Change in Potential energy delta K= K2 - K1 = 358.71 x 10^-19
As we know for total energy conservation total change in energy is 0
so q x delta V + delta K = 0
delta V = - delta K / q = 358.71 x 10^-19 / 1.60 x 10^-19 = 224.19V
Potential difference for the electron to pass = 224.19V</span>