The sound level produced by a chorus of 36 singers will be 86.96 dB.
Explanation:
Let I, the intensity of a sound produced by a singer, therefore, the intensity of the sound produced by 36 singers is equal to 36I. Therefore, the intensity is:
x = 10log(36I/Io)
x = 10log(36) + 10log(I/Io)
The second term in the equation is the sound intensity produced by a single singer. We calculate that the sound intensity of 36:
sound wave can be described by the intensity of sound, which is measured in decibels. The actual intensity, in watts per square meter, varies over a very wide range, so the logarithmic scale is more convenient in intensity characterization. The intensity in decibels is given by 10log10 (I/Io)
Where Io= 10^-12W/m^2 is called the threshold of hearing.
If the intensity of sound produced by 1 singer is I the intensity of sound of 36 singers will be 36I
<span>So we want to know what happens to the momentum of the ball that rolls down hill and hits a box. So we need to use the law of conservation of momentum which states that the momentum must be conserved. It cant be transformed into inertia or mass. It can only be transferred to other object via some interactions like collisions. So it has to be a. transferred to the box and that is the correct answer. </span>
The net force of the object is equal to the force applied minus the force of friction. Fnet = ma = F - Ff 12 kg x 0.2 m/s² = 15 N - Ff The value of Ff is 12.6 N. This force is equal to the product of the normal force which is equal to the weight in horizontal surface and the coefficient of friction. Ff = 12.6 N = k(12 kg)(9.81 m/s²) The value of k is equal to 0.107.
