Answer:
Explanation:
Given.
Thickness of brass plate 
Thermal conductivity of brass
Density of brass
Specific heat of brass
Thermal diffusivity of brass
Temperature of oven
The initial temperature
Plate remain in the oven
Heat conduction in the plate is one-dimensional since the plate is large relative to its thickness and there is thermal symmetry about the center plane.
The thermal properties of the plate are constant.
The heat transfer coefficient is constant and uniform over the entire surface.
The Fourier number is > 0.2 so that the one-term approximate solutions (or the transient temperature charts) are applicable (this assumption will be verified).
The Biot number for this process 
The constants
and
corresponding to this Biot are, from 11-2 tables.
The interpolation method used to find the
and
The Fourier number 
Therefore, the one-term approximate solution (or the transient temperature charts) is applicable.
Then the temperature at the surface of the plates becomes

Answer: National anthem contributed to the development of unity diversity in nepal; The Sayaun Thunga Phool Ka was officially adopted as national anthem of Nepal on 3rd August 2007. This anthem which means made of hundred flowers strongly portrays the great unity and diversity of Nepalese people.
Explanation:
Answer:
Reynolds number is 293068.43.
Explanation:
Step1
Given:
Water temperature is 98 °F.
Diameter of the pipe is 4 in
Length of the pipe is 870 feet.
Flow rate of water is 260 gallons per minute.
Calculation:
Step2
Water kinematic viscosity at temperature 98 F is
ft²/s.
Find the velocity of the water as follows:
Q=AV


V=6.638 ft/s
Step3
Expression for Reynolds number is given as follows:

Here, v is velocity,
is kinematic viscosity, d is diameter and Re is Reynolds number.
Substitute the values in the above equation as follows:


Re= 293068.43
Thus, the Reynolds number is 293068.43.