Linear density measures quantity per unit length. Common examples include mass density (titer) and charge density. Can describe one-dimensional or three-dimensional quantities
Density is mass per unit volume, discovered by Archimedes. Calculated as mass divided by volume (ρ = m/v). Common units are kilograms per cubic meter (kg/m³) and grams per cubic centimeter (g/cm³)
Materials and methods section follows literature review in research papers. Section should describe research procedures and experimental details. Structure varies by discipline, best learned from published papers
RMS calculates AC waveform voltage/current using square root of mean square. Only applies to sinusoidal waveforms, not constant DC applications. Pure sine wave RMS calculation: Vrms = 0.7071 x Vpeak. RMS values can be used in power calculations, non-RMS values are inaccurate
Create a 120-150cm wide paper chart with centimetre markings. Place children's names and heights on the chart. Use the chart to measure and track student growth. Have students guess their height before finding it
Density is the ratio of mass to volume, measured in kg/m³ or g/cm³. True density differs from apparent density, which is weight in air. Temperature affects density significantly, with 0.1°C difference causing 0.0001 g/cm³ error