A 90° elbow in a horizontal pipe is used to direct water flow upward at a rate of 45 kg/s. Another identical elbow is attached to the existing elbow such that the water flow makes a U-turn as shown in the second figure. The diameter of the entire elbow is 10 cm. The elbow discharges water into the atmosphere, and thus the pressure at the exit is the local atmospheric pressure. The elevation difference between the centers of the exit and the inlet of the elbow is 50 cm. The weight of the elbow and the water in it is considered to be negligible. Take the momentum-flux correction factor to be 1.03 at both the inlet and the outlet. Take the density of water to be 1000 kg/m3.
When a liquid flows in a horizontal pipe, the force component in horizontal direction is 650 N.
What is force?The force which acts on the liquid depends upon the density of fluid, it volume and acceleration due to gravity.
Given, mass flow rate m = 45 kg/s, D1 =D2 =10cm, density ρ =1000 kg/m³ and momentum flux correction factor is K =1.03.
Using the Bernoulli's theorem, we have
P1/ρg +V1²/2g +z1 =P2/ρg +V2²/2g +z2
P1/ ρg =z2 - z1 = 0.5 m
P1 = 4.905kPa
The force in horizontal direction is
Fx = P1A1 +ρQ(V1 - V2cosθ) x K
here θ =180°
ρAV1 =m =45
1000 x π/4x (0.1)² x V1 =45
V1 = 5.732 m/s
Fx =(4.905 x π/4 x 0.1²) x 10³ + 42 x 5.732 x 2
Fx = 650N
Thus, the force component in horizontal direction is 650N.
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what is an example of continuous delivery?
Casein, a dairy product used in making cheese, contains 25% moisture when wet. A dairy sells this product for $40/100 kg. If requested, they will dry the casein to 12% moisture. The drying costs are $5/100 kg of water removed. Assume that that the dairy has 1000 kg of the original product (wet casein) that will be dried to 12% moisture and then sold. How much dried casein is produced (in kg)?
The answer is 852 (with margin 1). Why is it?
Based on the percent moisture content of the dried product, the mass of dried casein produced os 852.3 kg.
What is the mass of casein in wet casein?The mass of casein in 1000 Kg of wet casein is 75% 1000 kg = 750 Kg
Mass of water 250 kg
The mass of casein is constant while the moisture content can be changed.
At 12% moisture content;
750 kg = 88%%
100 % = 100 ×750/88 = 852.27 kg
Therefore, the mass of dried casein produced os 852.3 kg.
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The pattern of the new wallpaper in Kathleen’s bedroom is made of regular heptagons. Each heptagon can be decomposed into congruent triangles. What is the area of fabric in one heptagon?
Answer:
the given statement is true.
Explanation:
The figure shows the region of integration for the integral.
Rewrite this integral as an equivalent iterated integral in the five other orders. Assume y(x) = 5 − x and z(x) = 25 − x2.
Answer:
first one is (a) next one is (b)
Explanation:
Linkage-style clutch control systems use a system of _______ between the clutch pedal and the clutch fork.
Linkage-style clutch control systems use a system of levers, cables, and rods between the clutch pedal and the clutch fork.
What is a clutch?A clutch can be defined as a mechanical device that is designed and developed to play the role of engaging and disengaging power transmission in the input shaft, so that the speed of input shaft can be changed as necessary.
In Mechanical engineering, linkage-style clutch control systems can use a system of levers, cables, and rods between the clutch pedal and the clutch fork.
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On the suction side of a pump, a Bourdon pressure gage reads 40 kPa vacuum. What is the corresponding absolute pressure if the local atmospheric pressure is 100 kPa (abs)
The corresponding absolute pressure if the local atmospheric pressure is 100 kPa (abs) is 60 PKA.
What is an atmospheric strain?An atmospheric (atm) is a unit of size identical to the common air stress at sea stage at a temperature of 15 levels Celsius (fifty-nine levels Fahrenheit). One ecosystem is 1,013 millibars or 760 millimeters (29. ninety-two inches) of mercury. Atmospheric stress drops as altitude increases.
Atmospheric pressure absolute - absolute pressure = vacuum pressure.Atm p - abs p = vacc p.100 - abs= 40 .60 pkA.Read more about the vacuum pressure :
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Arnold has a contract to design hospital which factors should he incorporate into the design of the building?
Answer:
first one is (a) next one is (b)
Explanation:
Drawdown at a 0. 20-m diameter well, which has been pumping at a rate of 1,000 m3/day for a long enough time that steady-state conditions have been reached, is determined to be 0. 70 m. The aquifer is 10. 0 m thick. An observation well located 10 m away has been drawn down by 0. 20 m. Determine the hydraulic conductivity of the aquifer
Answer:the aquifer’s hydraulic conductivity is K = 10.039 m/day
transmissivity T = 331.287 m/day
the drawdown 100 m away from the well is s = 1.452 m
Explanation:Given that :
The constant pumps rate Q = 2000 m³/day
R₁ =160 m → H₁ = 249 m
R₂ = 453 m → H₂ = 250 m
The confined aquifer B is 33 m thick
The hydraulic conductivity K =
K =
K =
K = 10.039 m/day
Transmissivity T = K × B
T = 10.039×33
T = 331.287 m/day
TO find the drawdown 100 m away from the well; we have:
K =
H₃ = 248.548 m
Drawdown (s) = H₂ - H₃
s = (250 - 248.548)m
s = 1.452 m
The ________ is considered the normal operating control of an air conditioner, according to the Standards of Practice. thermostat electrical breaker at the panel compressor override switch pressure valve of the refrigerant
Answer:
Thermostat
Explanation:
The thermostat is considered the normal operating control of an air conditioner, according to the Standards of Practice.
A shaft encoder is mounted on a 50 mm radius tracking wheel to monitor linear displacement. If the encoder produces 400 pulses per revolution. What is the linear displacement in mm per pulse?
The linear displacement in mm per pulse is gotten as; 254.64 mm per pulse
How to Calculate Linear Displacement?Circumference of a circle is;
C = 2πr
We have;
Radius; r = 50 mm = 0.05 m
Thus;
C = 2π * 0.05
C = 0.3142 m
Angular displacement = 0.2/0.3412
Angular displacement = 0.6366
Formula for linear displacement is;
Linear Displacement = angular displacement * number of pulses per revolution
Linear Displacement = 0.6366 × 400
Linear displacement = 254.64 mm per pulse
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