Examples of Cross Product of Two VectorsExample 1: Two vectors have their scalar magnitude as ∣a∣=2√3 and ∣b∣ = 4, while the angle between the two vectors is 60∘.
Example 2: If →a = (2, -4, 4) and →b = (4, 0,3), find the angle between them.
A bomb is dropped from an aeroplane flying horizontally at 360 km/h when it is just above a target. Where will it hit the ground if the plane is 196 m above the ground?
The earth is surrounded by an atmosphere which is denser near the surface of the earth. When the rays of light from the sun enter the earth’s atmosphere from outer space, they travel from a rarer medium to a denser medium. Hence, they bend towards the normal on refraction. (2) Hence, even when the sun is below the horizon while rising or setting, its rays reach us due to refraction and it appears to be on the horizon. Therefore, the sun is seen on the horizon a little before sunrise as well as for some time even after sunset.