Answer:
β₂ = 88.8 dβ
Explanation:
The intensity of the sound is
β = 10 log (I / I₀)
The sensitivity threshold (I₀) for humans is 1 10⁻¹² W / m²
I = I₀
I = 10⁻¹² 10^{70/10}
I = 1 10⁻⁵ W / m²
The total intensity for the 76 trombones is
I_total = n I
I_total = 76 1 10⁻⁵
I_total = 76 10⁻⁵ W / m²
Let's find the sound level
β₂ = 10 log (76 10⁻⁵ / 10⁻¹²)
β₂ = 88.8 dβ
Solution :
Michaelis-Menten kinetics in the field of biochemistry is considered as one of the well known models for enzyme kinetics. The model represents an equation that describes the enzymatic reactions's rate by relating the reaction rate to the substrate's concentration. The equation is named after the two famous scientists, Leonor Michaelis and Maud Menten.
The formula is :
![$v=\frac{V_{max}[S]}{K_M + [S]}$](https://tex.z-dn.net/?f=%24v%3D%5Cfrac%7BV_%7Bmax%7D%5BS%5D%7D%7BK_M%20%2B%20%5BS%5D%7D%24)
where v = velocity of reaction
= maximum rate achieved
= Michaelis constant
[S] = concentration of the substrate, S
According to the question, by putting the velocity of reaction, v as
, we get the above equation as
![$[S]= \frac{K_M}{3}$](https://tex.z-dn.net/?f=%24%5BS%5D%3D%20%5Cfrac%7BK_M%7D%7B3%7D%24)
Therefore the answer is ![$[S]= \frac{K_M}{3}$](https://tex.z-dn.net/?f=%24%5BS%5D%3D%20%5Cfrac%7BK_M%7D%7B3%7D%24)
The mass of a is smaller than the mass of b.
Answer:
Explanation:
Givens
m = 942
F = 6731
t = 21 seconds
vi = 0
vf = ?
Formula
F = m * (vf - vi ) / t
Solution
6731 = 942*(vf - 0)/21 Multiply both sides by 21
6731 * 21 = 942*vf
141351 = 942*vf Divide by 942
141351/942 = vf
vf = 151 m/s