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Find the mass of air in an empty room wi...

Find the mass of air in an empty room with dimensions 5 m by 4 m and ceiling 3 m high. What is the weight of this mass of air?

Text Solution

Verified by Experts

Mass of air in the room `m=` volume of room`xx`density of air
`=(5mxx4mxx3m)(1.20(kg)/(m^3))=72kg`
Weight of air, `W=mg=(72kg)(9.8(m)/(s^2))=706N`.
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Knowledge Check

  • The volume of air in a room is 204 m^(3) . The height of the room is 6m. What is the floor area of the room ?

    A
    `32 m^(2)`
    B
    `46 m^(2)`
    C
    `44 m^(2)`
    D
    `34 m^(2)`

  • A body has a mass M kg on the earth .What will be its weight on the earth ?

    A
    Mg newton
    B
    `((M)/(8))` newton
    C
    M newton
    D
    Zero