Calculate the reverberation time for an auditorium measuring `30mxx15mxx6m`. Sound absorption coefficients: for walls = 0.03, for ceiling `= 0.36`, for floor = 0.26.

How many 6 m cubes can be cut from a cuboid measuring 36 m xx 15 m xx 8 m ?

The number of 6 m cubes can be cut from a cuboid measuring 36 m xx 15 m xx 8 m is equal to

Calculate the pH of a 0.15 M solution of HOCl.

The reflection coefficient and absorption coefficient of a body are 0.3 and 0.2 respectively. The percentage of radiation transmitted

A brick measures 20 cm xx 10 cm xx 7.5 cm . How many bricks will be required for a wall 20 m xx 2m xx 0.75 m ?

0.2 xx 0.3 = 0.6

A is a 100kg block, and B is a 200kg block. As shown in figure the block A is attached to a string tied to a wall. The coefficient of friction between A and B is 0.2 and the coefficient of fricition between B and floor is 0.3. Then calculate the minimum force required to move the block B. (take g=10m//s^(2) ).

The dimensions of a room are 14mxx10mxx6.5m. there are two doors and 4 windows in the room . Each door measures 2.5 mxx1.2 m and each window measures 1.5 m xx1m. find the cost of painting the four walls of the room at Rs. 35 per m^(2) .

If the absorption coefficient and reflection coefficient of a surface of a body are 0.4 and 0.6 respectively then:-