# Compound 90° Bends in Physics

## Are two bends normally used to form compound 90° bends in physics?

a. true

b. false

## Answer:

The statement that normally two bends are used for compound 90° bends in physics is false.

In physics, when dealing with compound 90° bends, it is false to say that two bends are normally used. Complex bends often require more than two bends to achieve the desired shape and angles. Specifically in vector analysis, a compound 90° bend involves bending in more than one plane, making it necessary to use multiple bends to form the desired shape.

When considering vectors and their components, a single vector can be resolved into two perpendicular components forming the shape of a right angle triangle. This allows for the use of the Pythagorean theorem to calculate the length of the resultant vector obtained from the addition of two vectors at right angles.

Furthermore, understanding the relationship between tension and angles in physical scenarios is crucial. For example, when pulling a car with a chain, as the angle decreases, the tension in the chain significantly increases. This mathematical relationship helps in predicting and analyzing the forces on connectors, which is essential in engineering and physics applications.