Physics Core Concepts

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Questions and Answers

Which of the following core concepts in physics deals with the interactions between electric currents, magnetic fields, and electric charges?

  • Thermodynamics
  • Electromagnetism (correct)
  • Quantum Mechanics
  • Optics

Classical Mechanics accurately describes the motion of objects at any speed, including speeds approaching the speed of light.

False (B)

What principle states that the total energy of an isolated system remains constant and can transform from one form to another but cannot be created or destroyed?

Conservation of Energy

The branch of physics that studies the constituents and interactions of atomic nuclei is known as ______ physics.

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

Match the following concepts with their descriptions:

<p>Kinematics = Describes motion without considering causes. Dynamics = Deals with forces that cause motion. Optics = Studies the behavior and properties of light. Thermodynamics = Concerns heat, work, energy, and entropy.</p> Signup and view all the answers

Which law describes the gravitational force between two bodies as proportional to the product of their masses and inversely proportional to the square of the distance between them?

<p>Law of Universal Gravitation (B)</p> Signup and view all the answers

Entropy, as described in Thermodynamics, is a measure of the orderliness of a system.

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

What is the name of the phenomenon in which a particle can pass through a potential energy barrier that it classically cannot overcome, as described in Quantum Mechanics?

<p>Quantum Tunneling</p> Signup and view all the answers

The principle stating that there is a fundamental limit to the precision with which certain pairs of physical properties of a particle can be known simultaneously is known as the ______ Uncertainty Principle.

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

Which of the following concepts describes the bending of light as it passes from one medium to another?

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

Special relativity deals with gravity as a curvature of spacetime caused by mass and energy.

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

What are the three mechanisms by which heat can be transferred?

<p>Conduction, Convection, Radiation</p> Signup and view all the answers

The property of matter that causes it to experience a force when placed in an electromagnetic field is called electric ______.

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

Which of the following is a correct statement of Newton's First Law of Motion?

<p>A body in motion stays in motion unless acted upon by an external force. (B)</p> Signup and view all the answers

Momentum is calculated as the product of an object's mass and acceleration.

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

In the context of rotational motion, what is the term for the resistance of an object to changes in its rotational motion?

<p>Moment of Inertia</p> Signup and view all the answers

The amount of work needed to move a unit positive charge from a reference point to a specific point inside an electric field is known as electric ______.

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

Which of the following is a phenomenon in which the quantum states of two or more objects become linked together, even when the objects are separated by a large distance?

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

The zeroth law of thermodynamics states that the entropy of an isolated system tends to increase.

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

Match the following terms with their definitions:

<p>Wavelength = The distance between successive crests of a wave. Frequency = The number of wave cycles that pass a point per unit time. Amplitude = The maximum displacement of a point on a wave from its equilibrium position. Period = The time required for one complete cycle of a wave.</p> Signup and view all the answers

Flashcards

What is Physics?

The natural science studying matter, energy, space, and time.

What is Mechanics?

Deals with the motion of bodies and forces.

What is Thermodynamics?

Concerns heat, work, energy, and entropy.

What is Electromagnetism?

Deals with electric currents, magnetic fields, and electric charges.

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What is Optics?

Studies the behavior and properties of light.

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What is Quantum Mechanics?

Describes nature at the atomic and subatomic levels.

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What is Relativity?

Deals with space and time, especially at high speeds or strong gravity.

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What is Statistical Mechanics?

Studies effects of temperature, pressure, and volume on physical systems.

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What is Optics?

Studies light's behavior: reflection, refraction, diffraction.

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What is Acoustics?

Studies mechanical waves in solids, liquids, and gases.

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What is Nuclear Physics?

Studies atomic nuclei's constituents and interactions.

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What is Particle Physics?

Studies matter's fundamental constituents and their interactions.

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What is Condensed Matter Physics?

Studies matter in condensed phases (solids, liquids).

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What is Astrophysics?

Applies physics to astronomical objects and phenomena.

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What is Temperature?

A measure of the average kinetic energy of particles.

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What is Heat?

The transfer of energy due to temperature difference.

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What is Refraction?

Bending of light as it passes between mediums.

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What is Quantum Tunneling?

Phenomenon where particles pass through energy barriers.

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What is Quantum Entanglement?

Phenomenon linking quantum states of separate objects.

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What is General Relativity?

Gravity as the curvature of space-time.

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Study Notes

No new information, therefore no update needed.

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