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Questions and Answers
Which of the following represents a fundamental unit of measurement?
Which of the following represents a fundamental unit of measurement?
What defines a derived unit?
What defines a derived unit?
Which of the following is NOT one of the seven fundamental units?
Which of the following is NOT one of the seven fundamental units?
How many fundamental units are established within the metric system?
How many fundamental units are established within the metric system?
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Which physical quantity is associated with the unit 'candela'?
Which physical quantity is associated with the unit 'candela'?
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Study Notes
Mechanics: Units and Measurement
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Fundamental Units: A unit of measurement used as a basis for other units. These include:
- Length (metre)
- Mass (kilogram)
- Time (second)
- Electric current (ampere)
- Thermodynamic temperature (kelvin)
- Amount of substance (mole)
- Luminous intensity (candela)
Derived Units
- Definition: Units created from combinations of fundamental units.
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Examples:
- Area (square meter)
- Volume (cubic meter)
- Density (kilogram per cubic meter)
- Speed (meters per second)
- Acceleration (meters per second squared)
- Pressure (pascal)
- Force (newton)
- Energy (joule)
- Frequency (hertz)
- Power (watt)
- Voltage (volt)
- Charge (coulomb)
Dimensional Formulas
- Used to express physical quantities in terms of fundamental units (mass, length, and time).
- Examples include formulas for speed, acceleration, force and work
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Description
Test your knowledge on fundamental and derived units in mechanics. This quiz covers concepts including basic measurements, dimensional formulas, and various applications in physics. Understand the significance of units such as length, mass, and energy through a series of questions.
