Internal Structure and Density - AP Physics 1
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What is the density of iron?
What is the density of iron?
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7,870 kg/m³. Typical density of iron at room temperature.
7,870 kg/m³. Typical density of iron at room temperature.
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What is the effect of temperature on the density of a gas?
What is the effect of temperature on the density of a gas?
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Density decreases as temperature increases. Thermal expansion reduces mass per unit volume at higher temperatures.
Density decreases as temperature increases. Thermal expansion reduces mass per unit volume at higher temperatures.
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What is the density of a gas with mass 2 g and volume 1,000 cm³?
What is the density of a gas with mass 2 g and volume 1,000 cm³?
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Density = 0.002 g/cm³. Apply $\rho = \frac{2}{1000} = 0.002$ g/cm³.
Density = 0.002 g/cm³. Apply $\rho = \frac{2}{1000} = 0.002$ g/cm³.
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What is the density of aluminum?
What is the density of aluminum?
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2,700 kg/m³. Typical density of aluminum at room temperature.
2,700 kg/m³. Typical density of aluminum at room temperature.
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Find the mass of water with volume 3 L and density 1 kg/L.
Find the mass of water with volume 3 L and density 1 kg/L.
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Mass = 3 kg. Apply $m = \rho V = 1 \times 3 = 3$ kg.
Mass = 3 kg. Apply $m = \rho V = 1 \times 3 = 3$ kg.
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How does increasing the temperature affect the density of a solid?
How does increasing the temperature affect the density of a solid?
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Generally decreases density. Thermal expansion reduces density with increased temperature.
Generally decreases density. Thermal expansion reduces density with increased temperature.
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Identify the density of copper.
Identify the density of copper.
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8,960 kg/m³. Typical density of copper at room temperature.
8,960 kg/m³. Typical density of copper at room temperature.
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Identify the unit of density in the SI system.
Identify the unit of density in the SI system.
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Kilograms per cubic meter (kg/m³). Standard International System unit for density measurements.
Kilograms per cubic meter (kg/m³). Standard International System unit for density measurements.
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What is the formula for volume given mass and density?
What is the formula for volume given mass and density?
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Volume = $\frac{\text{mass}}{\text{density}}$. Rearranged density formula to isolate volume.
Volume = $\frac{\text{mass}}{\text{density}}$. Rearranged density formula to isolate volume.
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Calculate the density of a liquid with mass 200 g and volume 250 mL.
Calculate the density of a liquid with mass 200 g and volume 250 mL.
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Density = 0.8 g/mL. Apply $\rho = \frac{200}{250} = 0.8$ g/mL.
Density = 0.8 g/mL. Apply $\rho = \frac{200}{250} = 0.8$ g/mL.
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What is the density of ethanol?
What is the density of ethanol?
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789 kg/m³. Typical density of ethyl alcohol at room temperature.
789 kg/m³. Typical density of ethyl alcohol at room temperature.
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What is the formula for mass given density and volume?
What is the formula for mass given density and volume?
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Mass = Density × Volume. Rearranged density formula to solve for mass.
Mass = Density × Volume. Rearranged density formula to solve for mass.
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Find the volume of an object with mass 2 kg and density 4 kg/m³.
Find the volume of an object with mass 2 kg and density 4 kg/m³.
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Volume = 0.5 m³. Apply $V = \frac{m}{\rho} = \frac{2}{4} = 0.5$ m³.
Volume = 0.5 m³. Apply $V = \frac{m}{\rho} = \frac{2}{4} = 0.5$ m³.
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What is the density of a substance with 0.3 kg mass and 0.1 m³ volume?
What is the density of a substance with 0.3 kg mass and 0.1 m³ volume?
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Density = 3 kg/m³. Apply $\rho = \frac{0.3}{0.1} = 3$ kg/m³.
Density = 3 kg/m³. Apply $\rho = \frac{0.3}{0.1} = 3$ kg/m³.
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Find the mass of an object with density 500 kg/m³ and volume 0.2 m³.
Find the mass of an object with density 500 kg/m³ and volume 0.2 m³.
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Mass = 100 kg. Apply $m = \rho V = 500 \times 0.2 = 100$ kg.
Mass = 100 kg. Apply $m = \rho V = 500 \times 0.2 = 100$ kg.
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Identify the density of air at sea level.
Identify the density of air at sea level.
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Approximately 1.225 kg/m³. Standard density of dry air at sea level pressure.
Approximately 1.225 kg/m³. Standard density of dry air at sea level pressure.
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Find the density of a substance with 50 g mass and 25 cm³ volume.
Find the density of a substance with 50 g mass and 25 cm³ volume.
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Density = 2 g/cm³. Apply $\rho = \frac{50}{25} = 2$ g/cm³.
Density = 2 g/cm³. Apply $\rho = \frac{50}{25} = 2$ g/cm³.
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How does increasing pressure affect the density of a gas?
How does increasing pressure affect the density of a gas?
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Increases density. Compression reduces volume while maintaining mass.
Increases density. Compression reduces volume while maintaining mass.
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Identify the density of water at 4°C.
Identify the density of water at 4°C.
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1,000 kg/m³. Maximum density of water occurs at 4°C.
1,000 kg/m³. Maximum density of water occurs at 4°C.
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State the formula for pressure in terms of density, gravity, and height.
State the formula for pressure in terms of density, gravity, and height.
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Pressure = Density × Gravity × Height. Hydrostatic pressure formula relating fluid properties to depth.
Pressure = Density × Gravity × Height. Hydrostatic pressure formula relating fluid properties to depth.
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State the relationship between density and buoyancy.
State the relationship between density and buoyancy.
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Higher density objects sink; lower density objects float. Buoyant force depends on relative densities of object and fluid.
Higher density objects sink; lower density objects float. Buoyant force depends on relative densities of object and fluid.
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Find the density of an object with mass 10 kg and volume 2 m³.
Find the density of an object with mass 10 kg and volume 2 m³.
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Density = 5 kg/m³. Apply $\rho = \frac{m}{V} = \frac{10}{2} = 5$ kg/m³.
Density = 5 kg/m³. Apply $\rho = \frac{m}{V} = \frac{10}{2} = 5$ kg/m³.
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Find the mass of an object with density 500 kg/m³ and volume 0.2 m³.
Find the mass of an object with density 500 kg/m³ and volume 0.2 m³.
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Mass = 100 kg. Apply $m = \rho V = 500 \times 0.2 = 100$ kg.
Mass = 100 kg. Apply $m = \rho V = 500 \times 0.2 = 100$ kg.
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Find the density of an object with mass 10 kg and volume 2 m³.
Find the density of an object with mass 10 kg and volume 2 m³.
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Density = 5 kg/m³. Apply $\rho = \frac{m}{V} = \frac{10}{2} = 5$ kg/m³.
Density = 5 kg/m³. Apply $\rho = \frac{m}{V} = \frac{10}{2} = 5$ kg/m³.
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Identify the density of air at sea level.
Identify the density of air at sea level.
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Approximately 1.225 kg/m³. Standard density of dry air at sea level pressure.
Approximately 1.225 kg/m³. Standard density of dry air at sea level pressure.
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Identify the unit of density in the SI system.
Identify the unit of density in the SI system.
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Kilograms per cubic meter (kg/m³). Standard International System unit for density measurements.
Kilograms per cubic meter (kg/m³). Standard International System unit for density measurements.
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What is the density of a liquid with 0.5 kg mass and 500 mL volume?
What is the density of a liquid with 0.5 kg mass and 500 mL volume?
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Density = 1 kg/L. Convert: 500 mL = 0.5 L, so $\rho = \frac{0.5}{0.5} = 1$ kg/L.
Density = 1 kg/L. Convert: 500 mL = 0.5 L, so $\rho = \frac{0.5}{0.5} = 1$ kg/L.
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Which has a higher density: gold or silver?
Which has a higher density: gold or silver?
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Gold. Gold has density ~19,300 kg/m³ vs silver's ~10,500 kg/m³.
Gold. Gold has density ~19,300 kg/m³ vs silver's ~10,500 kg/m³.
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What is the density of aluminum?
What is the density of aluminum?
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2,700 kg/m³. Typical density of aluminum at room temperature.
2,700 kg/m³. Typical density of aluminum at room temperature.
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How does increasing the temperature affect the density of a solid?
How does increasing the temperature affect the density of a solid?
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Generally decreases density. Thermal expansion reduces density with increased temperature.
Generally decreases density. Thermal expansion reduces density with increased temperature.
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