The instruments in an airplane indicate that with respect to the air, the plane is moving north at a speed of 500 km/h. at the same time ground-based radar indicates that the plane is moving at a speed of 530 km/h in a direction 5degree cast of north. determine the magnitude and direction of the velocity of the air (give the direction in degrees with respect to north and clearly show this direction in your diagram). show a labeled vector triangle with the corresponding vector equation. use the proper single and double subscripted notation use "p" for the airplane and "a" for the air. express your answer to 3 significant figures attach this page showing all your formulae and work to the test.

an electric circuit

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.