Question

Medium-large (size of house or room)

A. Ample
B. Petite
C. Massive
D. Adequate

Answer 1

The mass of the air inside a house with a 150 m² area and 2.5 m height is 450 kg, calculated using the volume and air density. This mass is too heavy for a person to lift if it were in the form of bags of rocks.

Step-by-step explanation:

To calculate the mass of the air inside a house, we can use the room dimensions provided and the density of air. Given a floor area of 150 m² and a floor-to-ceilings height of 2.5 m, we can calculate the volume of the room:

Volume = Area × Height = 150 m² × 2.5 m = 375 m³

The average density of air at room temperature (20 °C) and sea level is approximately 1.2 kg/m³. Therefore, we multiply the room's volume by the density of air to find the mass:

Mass = Volume × Density = 375 m³ × 1.2 kg/m³ = 450 kg

Considering that 450 kg is quite a substantial mass, it's highly unlikely for a person to lift that amount if it were handed to them as bags of rocks. The weight is beyond the lifting capacity of most individuals.

Answer 2

The mass of air within a typical house with a floor area of 150 m² and a ceiling height of 2.5 m is approximately 450 kg, which would be impossible for a person to lift manually.The correct option is c.

Step-by-step explanation:

To calculate the mass of the air within a house, we'll use the formula for the mass of air in a given volume, which is mass = density × volume. The typical density of air at room temperature (20°C) and at sea level is approximately 1.2 kg/m³. Given that the floor area of the house is 150 m² and the floor-to-ceiling distance (height) is 2.5 m, the volume of air in the house is 150 m² × 2.5 m = 375 m³.

Therefore, the mass of air is approximately 1.2 kg/m³ × 375 m³ = 450 kg. Considering that it's generally impossible for a person to lift 450 kg as it greatly exceeds human lifting capacities, one could not lift this mass if handed as bags of rocks. Lifting such a weight typically requires mechanical assistance.The correct option is c.