Answer:
The decrease in decibels is 0.1 dB.
Explanation:
Let the intensity of one chorus is Io.
let the intensity of 1000 vocalist is dB.
The intensity of 1000 vocalist is 1000 Io.
..... (1)
let the intensity of 999 vocalist is dB'.
..... (2)
So, the change is
= dB - dB' = 30 - 29.9 = 0.1 dB
<span>One result of a chemical change is letter B: A
new material is formed. Let us take for example on the paper being burned to
ashes. There is a clear use of heat or thermal energy as heat is transferred
from the medium to the paper, however, no energy is created, it only
transformed to other energy. Materials may change but it could also happen to
physical change like ice (which was in solid phase) turning or evaporating to
water (liquid phase).</span>
Temperature is a measure of the average kinetic energy of the particles of a substance.
Hope this helps! :)
Power = Work / Time
If W = 50 J and T = 5s
P = W/T = 50J/5s = 10 Watts
Beryl is shaped like the hexagonal crystal system
