Physics Fundamentals

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Questions and Answers

What is the primary focus of physics as a natural science?

The study of living organisms and their processes.
The study of the Earth's physical structure and substance.
The study of chemical reactions and compounds.
The study of matter, energy, and their interactions. (correct)

Which branch of physics deals with the motion of macroscopic objects under the influence of forces?

Electromagnetism
Classical Mechanics (correct)
Optics
Thermodynamics

What does thermodynamics primarily study?

The structure of atoms.
The behavior of light.
Heat, work, and energy, and the relationships between them. (correct)
The motion of objects at high speeds.

Which of the following phenomena is NOT a part of the study of optics?

Radioactivity (A) Signup and view all the answers

Which field of physics studies matter at the atomic and subatomic levels?

Quantum mechanics (A) Signup and view all the answers

What does kinematics describe?

Motion without considering its causes. (A) Signup and view all the answers

According to Newton's first law of motion, what happens to an object when no force acts upon it?

It remains at rest or in uniform motion. (A) Signup and view all the answers

What is the formula for calculating work when a force is applied to an object?

$W = Fd\cos\theta$ (A) Signup and view all the answers

Which of the following describes kinetic energy?

Energy of motion (C) Signup and view all the answers

What is power defined as?

The rate at which work is done. (B) Signup and view all the answers

What does temperature measure in thermodynamics?

The average kinetic energy of the particles in a substance. (C) Signup and view all the answers

What is heat?

The transfer of thermal energy between objects at different temperatures. (C) Signup and view all the answers

What does the first law of thermodynamics state?

Energy is conserved. (B) Signup and view all the answers

What is electric charge measured in?

Coulombs (C) Signup and view all the answers

What is electric current?

The rate of flow of electric charge. (C) Signup and view all the answers

What is the relationship described by Ohm's Law?

Voltage equals current times resistance. (D) Signup and view all the answers

What happens to light when it reflects off a surface?

It bounces off. (C) Signup and view all the answers

What is refraction?

The bending of light as it passes from one medium to another. (D) Signup and view all the answers

What is wave-particle duality?

The concept that particles exhibit wave-like properties and waves can exhibit particle-like properties. (C) Signup and view all the answers

What does the theory of special relativity primarily deal with?

The relationship between space and time for objects moving at constant velocities. (D) Signup and view all the answers

Flashcards

What is Physics?

Study of matter, energy, space, and time.

What is Classical Mechanics?

Motion of macroscopic objects under forces.