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3 years ago

Calculate the mass of air in a room 5m × 4m ×2m given that the density of air is 1.3kgm-²

Physics

1 answer:

valentina_108 [34]3 years ago

4 0

32.5 kg of air

Explanation:

To calculate the mass of the air, we use the density formula:

density = mass / volume

mass = density × volume

density of air = 1.3 kg/m³

volume = 5 × 3 × 2 = 25 m³

mass of the air = 1.3 kg/m³ × 25 m³

mass of the air = 32.5 kg

Learn more about:

density

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3 years ago

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3 years ago

Your cousin Jannik skis down a blue square ski slope, with an initial speed of 3.6 m/s. He travels 15 m down the mountain side b

fenix001 [56]

Answer: The loss of energy due to friction is equal to 1,253 J.

Explanation:

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So, we can get the total initial mechanical energy, as follows:

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This remaining kinetic energy can be written as follows:

E₂ = K₂ = 1,764 J

The difference E₂-E₁, is the loss of energy due to friction forces acting during the travel along the 15 m path, and is as follows:

ΔE= E₂ - E₁ = 1,764 J - 3,017 J = -1,253 J

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2 years ago

Calculate the mass of air in a room 5m × 4m ×2m given that the density of air is 1.3kgm-²​

Calculate the mass of air in a room 5m × 4m ×2m given that the density of air is 1.3kgm-²