Notes, summaries, assignments, exams, and exercises for Physics for Baccalaureate

It's called electrical machine, which is any device capable of generating, processing, or using electricity.
Generators: They are machines capable of generating electrical power from mechanical energy they receive, classified as:
"The current generating dynamo."
"The alternator generates alternating current." Transformers: These are electrical machines that convert electrical current into different features, both voltage and intensity. Motors: These are electrical machines that harness the power they receive and transform it into mechanical energy. Depending on the type of power they receive, we differentiate between DC motors and AC motors. Electric Field: A magnet or electrical current disrupts the spacing around them, giving rise to a...

Rutherford Alpha Scattering Experiment

Rutherford — A beam of alpha particles (positively charged helium nuclei) was directed at a very thin gold foil to analyze the scattering behavior and deduce atomic structure.

1. Most particles passed through the foil with little or no deflection.
2. Some alpha particles were slightly deflected and passed through with difficulty.
3. A few particles bounced back from the gold foil.

Conclusion: The atom is mostly empty space with a small, dense, positively charged nucleus at its center and electrons distributed around it. Electrons were initially considered to move in orbits around the nucleus.

Limitations: If electrons moved in circular orbits they would undergo centripetal acceleration and, according to classical electrodynamics,...

Syntactic Functions

In an analytic language like English, the syntactic function of a sentence constituent is determined by its position.

On the other hand, Polish is a synthetic language, which means that syntactic functions of constituents are marked by case.

Phonological Features

In many languages, including Polish, there is anticipatory assimilation of unvoiced obstruents immediately before voiced obstruents. For example,

Polish prośba 'request' is pronounced [[ˈprɔʑba]] (instead of *[[ˈprɔɕba]]).

In both languages, the voicing of phonologically voiced obstruents varies depending on the context. In Polish, there is a rule of word-final devoicing, but its activity is counterweighted by voicing retention in connected speech, whose degree...

Fundamentals of Waves: Chapters 14 & 16

Mechanical vs. Electromagnetic Waves

Waves are broadly classified based on their requirement for a medium to travel:

Mechanical Waves

Mechanical waves require a medium (such as air, water, or solids) to travel.

• Examples: Sound waves, ocean waves, and waves traveling through springs.

Electromagnetic Waves (EM Waves)

Electromagnetic waves do not require a medium to travel; they can propagate through a vacuum.

• Examples: Radio waves, microwaves, infrared radiation, visible light, X-rays, and gamma rays.

Transverse Waves vs. Longitudinal Waves

Longitudinal

Electromagnetics Fundamentals

Electromagnetics is the study of electric and magnetic phenomena and their engineering applications.

Fundamental Forces

The four fundamental forces of nature are the nuclear, weak-interaction, electromagnetic, and gravitational force.

Electric Charge Concepts

One coulomb: amount of charge accumulated in one second by a current of one ampere.

1 coulomb represents the charge on ~ 6.241 x 10¹⁸ electrons.

Coulomb's Law

The force exerted by one point charge on another acts along the line joining the charges. It varies inversely as the square of the distance separating the charges and is proportional to the product of the charges. The force is repulsive if the charges have the same sign and attractive if the charges have opposite...

2.1 Thermodynamics: Concepts

Thermodynamics is a science that studies energy and its transformations.
A thermodynamic property is a system’s characteristic that does not depend on history. There are two types of thermodynamic properties: intensive and extensive properties. The intensive property is independent of the mass or size of the system (e.g., temperature, pressure, and density), whereas an extensive property is dependent (e.g., mass, weight, volume, and total energy).

A system is in thermal equilibrium when the temperature is uniform.
2.2 Zeroth Law of Thermodynamics

If two bodies are in thermal equilibrium with a third one, then all three are in thermal equilibrium with each other.

Remember that thermal equilibrium occurs when the temperature...

Kinematics and Dynamics

Kinematics studies movement irrespective of its causes, while dynamics analyzes the causes of motion.

Types of Motion

Translational Motion

Occurs when all points of a body change position.

Rotational Motion

Occurs when a body rotates around a fixed axis; it moves but doesn't travel linearly.

Inertial Reference System

A system where the reference point (0) is at rest or moving at a constant velocity. Earth can be approximated as an inertial reference point, despite its rotation, as this motion is imperceptible to us.

Motion Concepts

Path

The trajectory of successive positions a moving point occupies in space.

Position Vector

A vector originating from the coordinate system's origin, ending at the mobile's current position.

Displacement

Main Mechanisms of Space Remote Sensing

Orbital Satellites for Earth Observation

Orbital satellites are fundamental to remote sensing and are primarily of two types:

• Geostationary Orbit: Their movement is synchronized with the Earth's rotation, allowing them to always observe the same area. Due to their high altitude, they cover large regions, making them useful for studying global phenomena.
• Polar Orbit: These satellites follow a circular orbit perpendicular to the Equator. They observe different areas with each pass, and being at a lower altitude, they cover a smaller area but with significantly more detail.

Multispectral Scanning Sensors

These are among the most common remote sensing instruments. They function as a scanner, meticulously tracking...

Magnetic Properties

A magnetic field is the region around a magnet where its magnetic action is exerted. Within this region, ferrous materials are attracted to the magnet. Outside this region, no attraction is observed.

The magnetic field is represented by lines of force, conventionally going from the north to the south pole. Like poles repel each other, while opposite poles attract.

Magnetic flux is the number of lines of force passing through a surface within a magnetic field.

Materials that allow magnetic flux to pass through them easily are called permeable. They exhibit low resistance to this flux, a property known as reluctance. When a permeable material is placed in a uniform magnetic field, the lines of force concentrate within it, a phenomenon...

Electrostatics and Electric Fields

• The Coulomb: The quantity of electric charge flowing for one second through a cross-section of a conductor with a current of one Ampere.
• Coulomb's Law: The force with which two-point electric charges attract or repel each other is directly proportional to the product of these charges and inversely proportional to the square of the distance between them.
• Electric Field: This is the region of space where, at each point of origin, there is an electrostatic force caused by the presence of one or more electrical charges.
• Field Strength: At a specific point, this is the ratio of the force acting on a positive charge located at that point to the value of that charge.
• Electric Potential: At a point within an electric field,