Aplane travels 25 km at an angle of 35 degrees to the ground, then changes direction and travels 515 km at an angle of 22 degrees to the ground. what is the magnitude and direction of the plane’s total displacement?

Magnitude is 539.39 Km

Direction is

Explanation:

Using the cosine rule

X component is obtained by

x=25 cos 35 + 515 cos 22=497.9784862

Using the sine rule

Y component is obtained by

y=25 sin 35 + 515 sin 22=207.2618065

Therefore, magnitude equals 539.39 Km

Direction

c. rb

explanation:

the atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons.

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.