Answer:If they are used to top-down programming or functional programming, which treats elements of code as precise mathematical functions, it takes .
Explanation:
Answer:
The sound intensity is reduced by a factor of 1995.26
Explanation:
When comparing two sound intensities, the intensity level is measured in the unit of decibel or dB. The intensity of the threshold of hearing for a human being is 10^−12 W/m^2
. When the intensity level is zero, it means that the sound intensity is the same as the threshold of hearing.
The reduced sound intensity level is given as 33 dB, so
10 log (I/Io) = - 33
I : intensity of the sound
Io ( =
10^−12 W/m^2): threshold of hearing
So, the intensity ratio is
I/Io = 10^-3.3
= 5.01 x 10^-4
1/ 5.01 x 10^-4 = 1995.26
Answer:
The work done is 1050 Btu
Solution:
As per the question:
Mass of steam, M = 15 lbm
Temperature, T = 
Temperature, T' = 
Pressure, P = 350 psia
Since, the process results in the change in volume at constant pressure.
Now, work done by the steam is given by;
W = 
And
U = mV
So,
W = 
W = 
(1)
Now, using the super heated vapor table:
At 350 psia and , V = 
At 350 psia and , V' = 
Now, using these values in eqn(1):
W = 
Answer:
The main solution to this problem is to note that under equilibrium conditions, the rate at which heat is transferred into the metal plate from the sun by radiation must be equal to the rate at which heat is lost from the plate to the surrounding air by convection.
Explanation:
Therefore, qᵃ = qᵇΔT
where
a = Radiation energy source
b = Convection energy source
ΔT = Tp - Ta = Temperature change between the plate and the air under equilibrium condition
Given,
qᵃ = 700 W/m2
qᵇ = 10 W/m2K - 100 W/m2K
Hence, for qᵇ = 10 W/m2K,
ΔT = qᵃ / qᵇ
ΔT = 700/10 = 70K
Similarly, for qᵇ = 100 W/m2K
ΔT = 700/100 = 7K
The temperature change of the plate under equilibrium conditions range from 7K to 70K.
