Answer:
weight will be become
So option (C) will be correct answer
Explanation:
We have given mass of the earth is and radius of earth is
Acceleration due to gravity on earth is given by
Weight is equal to , as mass is always conserved so weight is dependent on acceleration due to gravity
Now radius is
So acceleration due to gravity is
As weight is directly related to acceleration due to gravity
So weight will be become
So option (C) will be correct answer
Answer:
- Fins should be attached outside the tube
- Fins can be attached on both sides when convection coefficient of air inside the tube is equal to the convection coefficient of atmospheric air outside the tube
Explanation:
The main function of the fins that are to be added is to ensure the speedy transfer of heat from the Hot air.
The fins should be attached outside the tube because the convection coefficient of air is higher inside the tube than the convection coefficient of the outside air ( atmospheric air ), BUT
When convection coefficient of air inside the tube is equal to the atmospheric air outside the tube, it is recommended that the fins can be added on both sides of the tube ( i.e. in and outside the tube )
Answer:
The absolute air pressure, on top of reservoir is 3858.84 kPa
Explanation:
Given
Since
Also,
, hence
KL = 0.5 + 2 +0.2 = 2.7
Pressure loss of pipe =
f from Moody chart at μ = 1.307 × 10⁻³ kg/m·s and
Roughness ε = 0.00026 m whereby, relative roughness is ε/d = (0.00026 m)/ 0.02 m = 0.013
f= 0.042 and
Q = v·A = 1.5 L/s = 0.0015 m³/s
v = Q/A where A = π·(0.02²)/4 = 3.1416×10⁻⁴ m²
v = (0.0015 m³/s)÷(3.1416×10⁻⁴ m²) =4.775 m/s
Pressure loss of pipe, = 3733071.965 Pa
= 3858839.04 Pa
The absolute air pressure, on top of reservoir = 3858.84 kPa
Answer:
a)Percent reduction in area=54.23 %
b)Percent elongation=32.87 %
Explanation:
Given that
Di= 11.53 mm
Df= 7.80 mm
Li= 51.4 mm
Lf= 68.3 mm
A= π/4 D²
a)
Percent reduction in area ,RA
RA= 54.23 %
Percent reduction in area=54.23 %
b)
Percent elongation EL
EL=32.87 %
Percent elongation=32.87 %
Answer:
The answer is given in the attachments
Explanation: