Two known forces F1 = 3.55 N at 74.0° below the positive x-axis and F2 = 2.80 N at 32.0° below the negative x-axis are acting on an object. What is the magnitude of the third force F3 so that the acceleration of the object is zero?

5.09N

Explanation:

The force required is the equilibrant force. This is defined as that force in a given force system that brings about balance in the system. It is equal in magnitude to the resultant force but opposite in direction to it.

Hence if we find the magnitude of the resultant force, we have already obtained the magnitude of the equilibrant force.

When the forces of a system are balanced, the resultant acceleration is zero.

Given;

The angle between the forces is deduced to be ( see the diagram below).

Applying the parallelogram law of vectors, the resultant force F is thus given as follows;

therefore;

See the diagram below;

The green line represents the equilibrant force needed to bring about a balance to make the body have a zero acceleration.  It is equal in magnitude but opposite in direction to the resultant F.

Explanation:

Revelation is what is mainly behind how Judaism, Christianity, and Islam was organised.

JUDAISM :

Through revelation they were seen as the people that were chosen, the ten commandment formed the basis on which Judaism was based on. The Hebrew bible gave the Jewish an identity, laid the foundation for Islam, Christianity and Judaism.

The stories from the Bible has also been sources of inspiration.

CHRISTIANITY :

The revelations of Jesus Christ helped the development of the religion, the messages of Jesus were widely accepted.

ISLAM :

Developed based on the revelations of Abraham, Moses and Jesus, and Muhammad is seen as the final prophet and the originator of Islam.