Physics Fundamentals

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Questions and Answers

Which of the following best describes the primary focus of thermodynamics?

  • The study of heat, work, and energy. (correct)
  • The study of electricity and magnetism.
  • The study of light and its properties.
  • The study of motion and forces.

According to Newton's first law of motion, an object in motion will eventually come to rest, even in the absence of external forces.

False (B)

What is the relationship between voltage, current, and resistance as described by Ohm's Law?

V = IR

The bending of light as it passes from one medium to another is known as ______.

<p>refraction</p> Signup and view all the answers

Match the following concepts with their descriptions:

<p>Kinematics = Describes motion without considering forces. Dynamics = Studies the forces that cause motion. Optics = Deals with light and its properties. Quantum mechanics = Deals with behavior of matter at the atomic level.</p> Signup and view all the answers

Which of the following statements best describes the second law of thermodynamics?

<p>The entropy of an isolated system tends to increase. (D)</p> Signup and view all the answers

According to the mass-energy equivalence principle, mass and energy are separate and distinct entities and cannot be converted into each other.

<p>False (B)</p> Signup and view all the answers

In the context of wave behavior, what phenomenon occurs when waves bend around obstacles or through openings?

<p>Diffraction</p> Signup and view all the answers

The principle stating that it is impossible to know both the position and momentum of a particle with perfect accuracy is known as ______'s uncertainty principle.

<p>Heisenberg</p> Signup and view all the answers

Which sub-branch of physics deals with space, time, gravity, and the universe at a large scale?

<p>Relativity (D)</p> Signup and view all the answers

Flashcards

What is Mechanics?

The study of motion and forces.

What is Kinematics?

Describes motion without considering forces; includes displacement, velocity, and acceleration.

What is Dynamics?

Studies forces causing motion, based on Newton's laws.

What is Work (physics)?

Energy transferred by a force causing displacement.

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What is Energy?

Capacity to do work; includes kinetic (motion) and potential (stored) types.

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What is Power (physics)?

Rate at which work is done or energy is transferred.

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What is Momentum?

Product of mass and velocity, conserved in a closed system.

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What is Temperature?

Measures the average kinetic energy of particles.

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What is Heat (physics)?

The transfer of energy because of temperature difference.

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What is Ohm's Law?

Voltage equals current times resistance (V = IR).

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Study Notes

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