Solar panels generate electricity using photovoltaic cells that receive sunlight. to protect these cells from moisture while all
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1) The distance travelled by the rocket can be found by using the basic relationship between speed (v), time (t) and distance (S):
Rearranging the equation, we can write
In this problem, v=14000 m/s and t=150 s, so the distance travelled by the rocket is
2) We can solve the second part of the problem by using the same formula we used previously. This time, t=300 s, so we have:
The transmitted intensity will be the quarter of the incident intensity of light, (I = 0.25 I₀), when two linear polarizing filters are placed one behind the other forming the angle of 45°.
<u>Explanation:</u>
Polarizers are used for constraining the direction of propagation of light waves. So depending upon the angle of polarizer, the transmitted rays will follow that angle only and the remaining lights waves at different angles will be reflected back. So basically it works like a filter or optical filters.
So, the transmitted intensity will be less compared to the original intensity of light as the beam will get confined in a particular angle.
The relation between transmitted intensity and incident intensity is given by Malus's law.
Here, I is the transmitted intensity, I₀ is the incident intensity and α is the angle of the polarizer.
In the present case, two polarizers are used with same angle, so the first one termed as polarizer, while the second one will be termed as analyzer. The angle which is used to polarize the intensity of the incident beam is the angle of 45°.
Then, according to Malus's law,
I = I₀ cos² 45 = (I₀/2)×(1/√2)² = I₀/4 =
So, the transmitted intensity will be the quarter of the incident intensity of light, (I = 0.25 I₀), when two linear polarizing filters are placed one behind the other forming the angle of 45°.