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Mastering the Principles of Physics

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Questions and Answers

Which book is recommended for the course PHYS 111-451?

Biology: A Guide to the Natural World
Principles of Physics 10th Edition (correct)
Introduction to Chemistry
Physics for Dummies

What is the purpose of dimensional analysis?

To study matter and energy
To measure the length of a string
To compare unknown quantities with standard units (correct)
To convert units

What is the SI system also known as?

The customary system
The scientific system
The imperial system
The metric system (correct)

What is the definition of physics?

The study of matter, energy, and their interactions (A) Signup and view all the answers

How are measurements made in physics?

By comparing an unknown quantity with a standard unit (B) Signup and view all the answers

What is the difference between a vector quantity and a scalar quantity?

A vector quantity has both magnitude and direction, while a scalar quantity only has magnitude. Signup and view all the answers

Give an example of a vector quantity.

Force, momentum, Electric field, velocity are examples of vector quantities. Signup and view all the answers

What are the two important properties of vector addition?

The two important properties of vector addition are adding vectors using the head-to-tail rule and subtracting vectors. Signup and view all the answers

How can a vector be represented mathematically?

A vector can be represented mathematically as a physical quantity that has magnitude and direction. Signup and view all the answers

What is the symbol used to represent a vector?

A vector is represented by a letter with a small arrow on it. Signup and view all the answers