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What is Physics?
What is Physics?
Fundamental of the sciences that explores matter and energy and their interaction.
Which of the following is not a field of Physics?
Which of the following is not a field of Physics?
Who established the three laws of motion?
Who established the three laws of motion?
Physics does not overlap with other fields.
Physics does not overlap with other fields.
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What are base units?
What are base units?
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What is the metric base unit of mass?
What is the metric base unit of mass?
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1 meter is defined as the distance light travels in __________ seconds.
1 meter is defined as the distance light travels in __________ seconds.
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Which system of units is mainly used in this module?
Which system of units is mainly used in this module?
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What is the SI unit of temperature?
What is the SI unit of temperature?
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Significant figures decrease the accuracy of measurements.
Significant figures decrease the accuracy of measurements.
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What is the purpose of unit conversions?
What is the purpose of unit conversions?
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Study Notes
Introduction to Physics
- Physics is the fundamental science that explores matter and energy and their interaction.
- Theoretical Physics develops theories and mathematics for the laws of physics.
- Applied Physics applies principles of physics to practical problems.
- Experimental Physics applies physics theories to build and work with scientific equipment, a mix of physics and engineering.
Fields of Physics
- Classical Mechanics: studies motion of bodies.
- Electricity and Magnetism: studies electric and magnetic phenomena.
- Quantum Mechanics: studies motion of small bodies.
- Optics: studies light.
- Acoustics: studies sound.
- Thermodynamics: studies heat.
- Solid-State Physics: studies solids.
- Plasma Physics: studies plasma (superheated matter).
- Atomic, Nuclear, and Particle Physics: studies atoms.
Contributions to Physics
- Galileo Galilei: investigated falling objects.
- Isaac Newton: established the three laws of motion.
- Michael Faraday: introduced electromagnetic induction.
- James Clerk Maxwell: published about the electromagnetic field.
Units of Measurement
- Measurements connect physical phenomena to mathematical analysis.
- Units compare a physical quantity against an agreed-upon standard.
- Clear definitions of physical units are necessary for scientific studies, trade, and commerce.
Systems of Units
- Two main systems of units: Imperial System of units and Metric System of units.
- Imperial System: developed by England, mainly used in the USA, UK, and Canada.
- Metric System: used in most parts of the world.
International System of Units (SI)
- SI units are based on the MKS system with additional units.
- 7 base units: Meter (m), Kilogram (kg), Second (s), Kelvin (K), Ampere (A), and others.
- Derived units are formed by combining base units.
International System of Units (SI) - Continued
- Prefixes can be added or removed from the beginning of units.
- Example: kg is the only SI base unit with a prefix.
Imperial System of Units
- Alike to United States Customary Units and British/English Engineering Units.
- SI prefixes like kilo, mega, and nano cannot be used with this system.
Unit Conversions
- Convert units by writing unit conversion factors as ratios and filling in numbers.
- Example: convert 7 feet to inches (recall, 1 ft = 12 in).
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Description
Introduction to physics and units of measurement. This quiz covers the basics of physics, including what physics is, units of measurement, international system of units, and unit conversions.
