Question

Answer it with full explanation and nobody will answer if he dont know ohk​

Answer 1

a.b = |a| |b|.cosθ

where a.b is the dot product of two vectors. |a| and |b| is the magnitude of vectors a and b, and θ is the angle between them.

To find the angle between two vectors, we will start with the formula of the dot product that gives the cosine of angle θ.

According to the formula of the scalar product,

a.b = |a| |b|.cosθ

This states that the dot product of two vectors a and b is equal to the magnitude of two vectors a and b multiplied by the cosine of the angle. To find the angle between two vectors, a and b, we will solve the angle θ,

cosθ = a.b / |a|. |b|

θ = arccos ( a.b / |a| . |b| )

Answer 2

Explanation:

Chemical kinetics, also known as reaction kinetics, is the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. It is to be contrasted with thermodynamics, which deals with the direction in which a process occurs but in itself tells nothing about its rate