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Questions and Answers
What is the density of a 200 g object that occupies 50 cm³?
What is the density of a 200 g object that occupies 50 cm³?
4 g/cm³
A block has a volume of 150 cm³ and a density of 2.5 g/cm³. What is its mass?
A block has a volume of 150 cm³ and a density of 2.5 g/cm³. What is its mass?
375 g
What is the volume of a liquid with a mass of 500 g and a density of 0.8 g/mL?
What is the volume of a liquid with a mass of 500 g and a density of 0.8 g/mL?
625 mL
If 200 g of salt is dissolved in 2 L of water, what is the concentration in g/L?
If 200 g of salt is dissolved in 2 L of water, what is the concentration in g/L?
A car travels 240 km in 3 hours. What is its speed?
A car travels 240 km in 3 hours. What is its speed?
A runner moves 400 m in 50 s. What is their average speed?
A runner moves 400 m in 50 s. What is their average speed?
A plane accelerates from 100 m/s to 200 m/s in 5 seconds. What is its acceleration?
A plane accelerates from 100 m/s to 200 m/s in 5 seconds. What is its acceleration?
An object falls freely for 4 seconds. What is its velocity just before it hits the ground? (g = 9.8 m/s²)
An object falls freely for 4 seconds. What is its velocity just before it hits the ground? (g = 9.8 m/s²)
How long does it take for an object to fall 78.4 m? (g = 9.8 m/s²)
How long does it take for an object to fall 78.4 m? (g = 9.8 m/s²)
A cyclist accelerates at 2 m/s² for 5 seconds. If the initial velocity was 10 m/s, what is the final velocity?
A cyclist accelerates at 2 m/s² for 5 seconds. If the initial velocity was 10 m/s, what is the final velocity?
A force of 30 N is applied to a 5 kg object. What is its acceleration?
A force of 30 N is applied to a 5 kg object. What is its acceleration?
A 10 kg object moves at 5 m/s. What is its momentum?
A 10 kg object moves at 5 m/s. What is its momentum?
A force of 50 N is applied to a 2 kg mass for 3 seconds. What is its impulse?
A force of 50 N is applied to a 2 kg mass for 3 seconds. What is its impulse?
An object moves with a velocity of 20 m/s and has a momentum of 100 kgâ‹…m/s. What is its mass?
An object moves with a velocity of 20 m/s and has a momentum of 100 kgâ‹…m/s. What is its mass?
A hydraulic lift uses a small piston with an area of 0.01 m² to lift a car with a large piston of 1.5 m². If a force of 100 N is applied to the small piston, what is the force on the large piston?
A hydraulic lift uses a small piston with an area of 0.01 m² to lift a car with a large piston of 1.5 m². If a force of 100 N is applied to the small piston, what is the force on the large piston?
What is the pressure exerted by a 500 N force applied to a 2 m² area?
What is the pressure exerted by a 500 N force applied to a 2 m² area?
A tank has a pressure of 2,000 Pa and an area of 5 m². What is the force acting on it?
A tank has a pressure of 2,000 Pa and an area of 5 m². What is the force acting on it?
Flashcards
What is Density?
What is Density?
Mass per unit volume. (Density = \frac{Mass}{Volume})
Density of a 200g object occupying 50 cm³?
Density of a 200g object occupying 50 cm³?
Density is 4 g/cm³
Mass of a block with a volume of 150 cm³ and a density of 2.5 g/cm³?
Mass of a block with a volume of 150 cm³ and a density of 2.5 g/cm³?
Mass is 375 g.
Volume of a liquid with a mass of 500 g and a density of 0.8 g/mL?
Volume of a liquid with a mass of 500 g and a density of 0.8 g/mL?
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Concentration if 200 g of salt is dissolved in 2 L of water?
Concentration if 200 g of salt is dissolved in 2 L of water?
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Speed of a car that travels 240 km in 3 hours?
Speed of a car that travels 240 km in 3 hours?
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Average speed of a runner who moves 400 m in 50 s?
Average speed of a runner who moves 400 m in 50 s?
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Acceleration of a plane accelerating from 100 m/s to 200 m/s in 5 seconds?
Acceleration of a plane accelerating from 100 m/s to 200 m/s in 5 seconds?
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Velocity of an object falling freely for 4 seconds? (g = 9.8 m/s²)
Velocity of an object falling freely for 4 seconds? (g = 9.8 m/s²)
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Time it takes for an object to fall 78.4 m? (g = 9.8 m/s²)
Time it takes for an object to fall 78.4 m? (g = 9.8 m/s²)
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Final velocity of a cyclist accelerating at 2 m/s² for 5 seconds with an initial velocity of 10 m/s?
Final velocity of a cyclist accelerating at 2 m/s² for 5 seconds with an initial velocity of 10 m/s?
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Define Acceleration
Define Acceleration
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Mass
Mass
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Momentum
Momentum
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Inertia
Inertia
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Acceleration of a 5 kg object with a force of 30 N applied?
Acceleration of a 5 kg object with a force of 30 N applied?
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Momentum of a 10 kg object moving at 5 m/s?
Momentum of a 10 kg object moving at 5 m/s?
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Impulse
Impulse
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Impulse applied to a 2 kg mass with a force of 50 N for 3 seconds?
Impulse applied to a 2 kg mass with a force of 50 N for 3 seconds?
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Mass of an object with a velocity of 20 m/s and momentum of 100 kg·m/s?
Mass of an object with a velocity of 20 m/s and momentum of 100 kg·m/s?
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What is Pressure?
What is Pressure?
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Force on the large piston of a hydraulic lift when a force of 100 N is applied to the small piston?
Force on the large piston of a hydraulic lift when a force of 100 N is applied to the small piston?
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Pressure exerted by a 500 N force applied to a 2 m² area?
Pressure exerted by a 500 N force applied to a 2 m² area?
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Force acting on a tank with a pressure of 2,000 Pa and an area of 5 m²?
Force acting on a tank with a pressure of 2,000 Pa and an area of 5 m²?
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What is Temperature?
What is Temperature?
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What is Heat?
What is Heat?
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What is Specific Heat Capacity?
What is Specific Heat Capacity?
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Conservation of Energy
Conservation of Energy
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Work
Work
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Power
Power
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Study Notes
- Calculations and examples of density, mass, volume, concentration, speed, acceleration, velocity, momentum, impulse, force, pressure, and temperature.
Density
- Defined as mass divided by volume.
- Expressed as: Density = Mass / Volume.
- An object with a mass of 200 g occupying 50 cm³ has a density of 4 g/cm³ (200 g / 50 cm³).
- A block with a 150 cm³ volume and a 2.5 g/cm³ density has a mass of 375 g (2.5 g/cm³ * 150 cm³).
- The volume of a liquid with a 500 g mass and a 0.8 g/mL density is 625 mL (500 g / 0.8 g/mL).
Concentration
- Represented as mass divided by volume.
- Expressed as: Concentration = Mass / Volume.
- 200 g of salt dissolved in 2 L of water results in a concentration of 100 g/L (200 g / 2 L).
Speed
- Defined as distance divided by time.
- Expressed as: Speed = Distance / Time.
- A car traveling 240 km in 3 hours has a speed of 80 km/h (240 km / 3 h).
- A runner moving 400 m in 50 s has an average speed of 8 m/s (400 m / 50 s).
Acceleration
- Acceleration is the change in velocity over time.
- Expressed as: Acceleration = (Final Velocity - Initial Velocity) / Time.
- A plane accelerating from 100 m/s to 200 m/s in 5 seconds has an acceleration of 20 m/s² ((200 - 100) / 5).
Velocity
- For an object falling freely, velocity is the product of gravity and time.
- Expressed as: Velocity = g * Time, where g = 9.8 m/s².
- An object falling freely for 4 seconds reaches a velocity of 39.2 m/s (9.8 m/s² * 4 s).
Time
- The time it takes for an object to fall is calculated using: Time = √(2 * Distance / g).
- For an object falling 78.4 m, the time to fall is 4 s (√(2 * 78.4 / 9.8)).
Final Velocity
- Calculated using the formula: Final Velocity = Initial Velocity + (Acceleration * Time).
- A cyclist accelerating at 2 m/s² for 5 seconds, starting with an initial velocity of 10 m/s, reaches a final velocity of 20 m/s (10 + (2 * 5)).
Force
- Force equals mass times acceleration
- From that, acceleration equals Force / Mass.
- A 30 N force applied to a 5 kg object results in an acceleration of 6 m/s² (30 N / 5 kg).
Momentum
- Defined as the product of mass and velocity
- Expressed as: Momentum = Mass * Velocity.
- A 10 kg object moving at 5 m/s has a momentum of 50 kgâ‹…m/s (10 kg * 5 m/s).
Impulse
- Defined as the product of force and time.
- Expressed as: Impulse = Force * Time.
- A 50 N force applied to a 2 kg mass for 3 seconds results in an impulse of 150 Ns (50 N * 3 s).
Mass
- Mass, when momentum and velocity are known, is calculated as: Mass = Momentum / Velocity.
- An object moving with a velocity of 20 m/s and a momentum of 100 kgâ‹…m/s has a mass of 5 kg (100 kgâ‹…m/s / 20 m/s).
Hydraulic Lift
- Using Pascal's principle, the force on the large piston is proportional to the area ratio.
- With a small piston area of 0.01 m² and a large piston area of 1.5 m², a 100 N force on the small piston results in a 15,000 N force on the large piston.
Pressure
- Defined as force divided by area.
- Expressed as: Pressure = Force / Area.
- A 500 N force applied to a 2 m² area results in a pressure of 250 Pa (500 N / 2 m²).
- A tank with a pressure of 2,000 Pa over an area of 5 m² has a force of 10,000 N acting on it (2,000 Pa * 5 m²).
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Description
Explore calculations of density, mass, volume, concentration. Understand speed, acceleration, velocity, momentum, impulse, force, pressure, and temperature with examples.
