Ed has three engineering degrees. he has hired an interior decorator to update his home. he is tremendously frustrated when he asks what he thinks are simple questions about weight-bearing walls and insulation requirements, and the designer is unable to understand. yet ed has the same problems when the designer starts talking about mauve, cerise, and magenta. why is the communication process not working in this instance?

be subject to a force andchange its motion

no. dot product   =0 when vecs at right angles

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.