Mona Lisa was the painting that Leonardo Da Vinci started in 1503 and that painting took him 4 years and Leonardo was a important man the Mona Lisa was always important
Answer:
Hazlehurst, Mississippi, U.S. Robert Leroy Johnson (May 8, 1911 – August 16, 1938) was an American blues singer, songwriter and musician. ... He is now recognized as a master of the blues, particularly as the personification of the Delta blues style.
Explanation:
Answer:
The sound level of 41 singers is approximately 79.52 dB.
Explanation:
As the sound level is given as 63.4 dB
The Intensity to Sound level relation is given as

Here β is given as 63.4 dB
I is to be calculated for 1 singer
I_o is constant as 10⁻¹²
So the equation is given as

Now as there are 41 singers so their I is given as

Now the value of sound level is given as
