A window whose area is `2 m^(2)` opens on a street where the street noise results at the window an intensity level of `60 dB`. How much acoustic power energy from the street will it collect in a day?

A window whose area is 2m^2 opens on street where the street noise result in an intensity level at the window of 60 dB. How much acoustic power enters the window via sound waves. Now if an acoustic absorber is fitted at the window, how much energy from street will it collect in 5 h?

A window whose area is 2m^2 opens on street where the street noise result in an intensity level at the window of 60 dB. How much acoustic power enters the window via sound waves. Now if an acoustic absorber is fitted at the window, how much energy from street will it collect in 5 h?

A window whose area is 2m^2 opens on street where the street noise result in an intensity level at the window of 60 dB. How much acoustic power enters the window via sound waves. Now if an acoustic absorber is fitted at the window, how much energy from street will it collect in 5 h?

Walls of two buildings on either side of a street are parallel to each othe. A ladder 5.8m long is placed on the street such that its top just reaches the window of a building at the height of 4m . On turning the ladder over to the other side of the street, its top touches the window of the other building at a height 4.2m . Find the width of the street.

Walls of two buildings on either side of a street are parallel to each othe. A ladder 5.8m long is placed on the street such that its top just reaches the window of a building at the height of 4m . On turning the ladder over to the other side of the street, its top touches the window of the other building at a height 4.2m . Find the width of the street.

From a window h m high above the ground in a street, the angles of elevation and depression of the top and foot of the other house on the opposite side of the street as alpha and beta respectively show that height of the opposite house is h(1+tan alpha cos beta)m .