Your friend is opening a new restaurant. While waiting for the permanent sign to be delivered, he tests the system by placing a heavy load (300N) at the end of the horizontal beam that will support the sign. The beam itself is uniform and weighs 210 N. In addition to the beam, a cable connects the load go wall. 1. Find the tension in the cable.
2. Find the horizontal component of the force exerted on the beam at the wall.
3. Find the vertical component of the force exerted on the beam at the wall.

tube or goog with be a great resource to with that question

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

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speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.