This means that the wind farm has the potential to generate up to 75.9 megawatts of electricity under ideal wind conditions.
What is the formula to calculate the area of a rectangle?The total rated capacity of a wind farm is determined by the combined power-generation capacity of all the individual wind turbines within it.
In this case, with 22 industrial-scale wind turbines, each having a rated power-generation capacity of 3.45 MW, we can calculate the total rated capacity by multiplying the capacity of each turbine by the number of turbines.
Therefore, 3.45 MW (rated capacity per turbine) multiplied by 22 (number of turbines) gives us a total rated capacity of 75.9 MW for the wind farm.
Learn more about potential to generate
brainly.com/question/27960656
#SPJ11
A sheet of steel 1.5 mm thick has nitrogen (N2) atmospheres on both sides at 1200°C and is permitted to achieve steady-state diffusion condition. The diffusion coefficient for N2 in steel at this temperature is 6 ´ 10-11 m2 /s, and the diffusion flux is found to be 1.2 ´ 10-7 kg/m2 -s. Also, it is known that the concentration of N2 in the steel at the high-pressure surface is 4 kg/m3 . How far into the sheet from the high-pressure side will the concentration be 2.0 kg/m3 ? Assume a linear concentration profile.
Answer:
do the wam wam
Explanation:
Which statement about the seal between the respirator and the wearer's face is true?
POSSIBLE ANSWERS:
Negative pressure respirators prevent ambient air from entering the mask.
Cosmetic surgery can be completed without a re-evaluation of respirator fit.
Positive pressure respirators tighten the face mask when the wearer inhales.
Facial hair can prevent a respirator from properly sealing to the wearer’s face.
A true statement about the seal between the respirator and the wearer's face is: D. facial hair can prevent a respirator from properly sealing to the wearer’s face.
What is a respirator?A respirator can be defined as a personal protective equipment that is typically worn over the face to protect the mouth and nose, while protecting the wearer from inhaling smoke, dust, or other toxic chemical substances.
In this context, a true statement about the seal between the respirator and the wearer's face is that facial hair has the ability to prevent a respirator from properly sealing to the wearer’s face.
Read more on protective equipment here: https://brainly.com/question/19131588
#SPJ1
A petrochemical plant in Island C produces formaldehyde (CH2O) industrially by the
catalytic oxidation of methanol (CH3OH). The following is the chemical reaction:
CH3OH + ½O2 → CH2O + H2O --- (1)
Unfortunately, a significant portion of the formaldehyde will react with oxygen to produce CO
and H2O. The following is the side reaction:
CH2O + ½O2 → CO + H2O --- (2)
Assume twice the stoichiometric amount of air needed for oxidation (all chemical reactions) is
fed to the reactor. The conversion of methanol is 90% in the reactor. The outlet stream of the
reactor was analysed and found to be 150 kg/hr of formaldehyde, 30 kg/hr of CO and other
components.(i) Determine the mass flowrate (kg/hr) of Stream A. (ii) Determine the molar flowrate (kg-moles/hr) of Stream B (iii) Determine the mass flowrate (kg/hr) of water in the outlet stream.
affect the amount and rate the alcohol reaches the
bloodstream.
Answer:
Answer to the following question is as follows;
Explanation:
The amount of alcohol consumption can be influenced by a variety of things, including food.
The proportion and pace at which alcohol reaches the circulation is affected by drinking rate, body mass, and the size of the beverage. Alcohol enters your system as soon as it reaches that first sip, as per the National Institute on Drug Abuse and Alcoholism. After 10 minutes, the results are noticeable.
Using calculus, obtain the closed-form solution for the case where the jumper is initially at rest (v=0 at t= 0). ge tanh (V. ge ct tm O ge V= gm tanh O gin V= tanh ge m Ov V= V tanh( V Et)
The solution involves hyperbolic trigonometric functions. The closed-form solution: v = (gm/k) tanh[ (k/m) (ge - t tanh⁻¹(gm/(k ge))) ]
Closed-Form Solution for Jumper Starting from Rest in Free FallThe problem of determining the motion of a jumper who starts from rest in free fall can be solved using calculus. We can begin by using Newton's second law, F = ma, which in this case can be written as mg - kv = m dv/dt, where m is the mass of the jumper, g is the acceleration due to gravity, k is the air resistance coefficient, v is the velocity of the jumper, and t is time.
This differential equation can be solved using separation of variables. Rearranging, we have:
(1/m) dv / (g - (k/m)v) = dt
Integrating both sides, we get:
(1/m) ln|g - (k/m)v| = (1/ge)t + C
where C is an integration constant. Solving for v, we get:
v = (gm/k) - (gm/k) tanh[(k/m)(ge - C)t]
Now, we can use the initial condition v=0 at t=0 to solve for the integration constant C. This gives us:
C = ge - (1/k) tanh⁻¹(gm/(k ge))
Substituting this back into our solution for v, we obtain the closed-form solution:
v = (gm/k) tanh[ (k/m) (ge - t tanh⁻¹(gm/(k ge))) ]
This equation describes the velocity of the jumper as a function of time, given the initial conditions of starting from rest and in free fall. The solution involves hyperbolic trigonometric functions, which are commonly used to describe the motion of objects subject to air resistance. This closed-form solution can be useful in predicting the motion of jumpers in various scenarios, such as in the sport of skydiving or bungee jumping, where the initial conditions may vary.
To know more about trigonometric functions, visit:https://brainly.com/question/6904750
#SPJ4
if an exhaust valve leaks during engine operation, maverick air is drawn into the combustion chamber, causing a lean air-fuel mixture. what symptoms will a leaking exhaust valve cause during engine operation
Answer:
Reduced engine power: The engine may not produce as much power as it normally would, and it may feel sluggish or underpowered.
Decreased fuel efficiency: The lean air-fuel mixture may cause the engine to burn fuel less efficiently, resulting in reduced fuel economy.
Higher exhaust gas temperatures: The lean air-fuel mixture may cause the exhaust gases to be hotter than normal, which can be indicated by higher exhaust gas temperatures.
Knocking or pinging sounds: The lean air-fuel mixture may cause the fuel to ignite prematurely, which can create knocking or pinging sounds.
Misfiring: The lean air-fuel mixture may cause the engine to misfire, resulting in rough operation and potentially causing the check engine light to come on.
Explanation:
An engineer sets up an experiment to determine the coefficient of static friction "us" for an unknown material. She cuts the material in to a disc and places a test mass on top, L = .75m from the center, and she proceeds to spin the disc with an angular acceleration of theta-double-dot = 40t rad/s^2 counterclockwise. The engineer notes that the test mass slips at t=.2s. What is "us" (friction)?
Answer:
HF I am writing this email with your company is it a try and make them easier for us and we will need a new job and then email
You work for REV, Incorporated, and check your work email on your mobile phone. According to these documents, if you cannot find your phone, what should you do first?
Answer:
In case whereby you work for rev and check your work email on your mobile phone and You have decided to resign your job and take a position with a different company. Regarding rdm on your mobile phone, you should B. Take your phone to IT Services, and they will wipe it clean.
What is expected to do when leaving the company?
It is expected from you to return anything that belong to the company before leaving the company, but in the case whereby there is still a rdm on your mobile phone, then you can work to the IT services so they can wipe it away.
Find out more on IT Services
at brainly.com/question/21210308
#SPJ1
Missing options:
A. Turn your phone to IT Services
B. Take your phone to IT Services, and they will wipe it clean
C. Download RDM to your personal computer
D. Call IT Services for support, and they will assist
E. Nothing. IT Services will automatically remove all data
define the term software engineering and list two key reasons that have caused software project successes and failures. how is the software engineering field different than other fields of engineering such as mechanical engineering, electrical engineering, and civil engineering?
Software engineering is the activity of designing, developing, maintaining, testing and evaluating computer software. There are several success factors for software engineering, two of them are: clear objectives and goals and good management.
Software engineering success factorsThese two factors (clear objectives and good management) are very essentials in software engineering. What makes software engineering different from other branches of engineering is that software engineering involves more than one element. It involves design elements, testing, implementation and maintenance elements. So, it is more complex than other branches of engineering. And it also involves hardware and software, because to make a good software you have to know more about the hardware.
Learn more about software engineering https://brainly.com/question/7145033#SPJ4
Polarization: Unpolarized light passes through three ideal polarizing filters. The first filter is oriented with a horizontal transmission axis, the second one has its transmission axis at 30° from the horizontal, and the third filter has a vertical transmission axis. What percent of the light gets through this combination?
Answer:
the percentage of light that gets through this combination is 9.38
Explanation:
Given the data in the question;
Let us represent the incident unpolarized light with \(I_0\).
So, the amount of light intensity passing through the first polarizer will be;
\(I_1\) = \(I_0\) / 2 ------ let this be equation 1
An the amount of light intensity passing through the second polarizer will be;
\(I_2\) = \(I_1\)cos²θ
given that; the second one has its transmission axis at 30°
so, we substitute;
\(I_2\) = \(I_1\) × cos²( 30° )
\(I_2\) = \(I_1\) × 0.75
\(I_2\) = 0.75\(I_1\)
from equation; \(I_1\) = \(I_0\) / 2
\(I_2\) = 0.75( \(I_0\) / 2 )
\(I_2\) = 0.375\(I_0\) .
Now, the amount of light intensity passing through the third polarizer will be;
\(I_3\) = \(I_2\)cos² ( 90° - 30° )
\(I_3\) = \(I_2\) × cos²( 60° )
\(I_3\) = \(I_2\) × 0.25
we substitute
\(I_3\) = 0.375\(I_0\) × 0.25
\(I_3\) = 0.09375\(I_0\)
∴ \(I_3\)/\(I_0\) × 100 = 0.09375 × 100
⇒ 9.38%
Therefore, the percentage of light that gets through this combination is 9.38
The operating sequence to light the main burners on an intermittent pilot system is:______.
The modifications of superheat and reheat for a vapor power plant are specifically better for the operation which of the following components. Pick one and briefly explain.
a.Condenser
b.Boiler
c.Open feedwater heater
d.Turbine
e.Electric generator
The modifications of superheating and reheat for a vapor power plant are specifically better for the operation which of the following components b.Boiler.
What are the primary additives in the vapour strength cycle?There are 5 steam strength cycles: The Carnot cycle, the easy Rankine cycle, the Rankine superheat cycle, the Rankine reheat cycle and the regenerative cycle.
Central to expertise the operation of steam propulsion is the primary steam cycle, a method wherein we generate steam in a boiler, increase the steam via a turbine to extract work, condense the steam into water, and sooner or later feed the water again to the boiler.Reheat now no longer best correctly decreased the penalty of the latent warmness of vaporization in steam discharged from the low-stress quit of the turbine cycle, however, it additionally advanced the first-rate of the steam on the low-stress quit of the mills via way of means of decreasing condensation and the formation of water droplets inside the turbine.Read more about the Boiler:
https://brainly.com/question/17362931
#SPJ1
select all that apply blank frequent compounding leads to a blank ear, all else equal. multiple select question. more; lower more; higher less; higher less; lower
A tuba's BO is lower than a flute's BO. The flute may also emit sound waves with this higher frequency as we know that a rise in pitch corresponds to an increase in frequency.
The pitch of a sound would depend on the frequency of something like the sound wave. The greater pitch of high-frequency sound waves allows them to be recognized from low sound waves. Frequency and pitch were not the same, despite their tight relationship. A quality that can be studied scientifically is frequency. It is impossible to quantify pitch because it is a subjective experience that each person has when listening to a sound wave. The general definition of viscosity is the measure of a fluid's resistance to change shape at a particular rate. When referring to liquids, it is equivalent to the more widely used term of "thickness." For instance, syrup has a higher viscosity than water.
Learn more about Viscosity here:
https://brainly.com/question/12977474
#SPJ4
a. Calculate the equivalent resistance of the circuit
Answer:
no any think photo.
Explanation:
who was part of dempwolf his firm when he first started
Explanation:
Dempwolf created by John Augustus, Among the most prominent innovative solutions in Southern California Pennsylvania was established by Dempwolf with brother Reinhardt or uncle's son Frederick entered the company of J.A. Dozens of structures in 10 states were engineered by Dempwolf.
Imagine que le piden diseñar una varilla cilíndrica
de acero de 50. 0 cm de longitud, con sección transversal
circular, que conducirá 150 J/s desde un horno a 400°C a un
recipiente con agua hirviente que está a una atmósfera. ¿Qué
diámetro debe tener la varilla?
As a result, the varilla needs to be around 5.1 cm in diameter in order to transfer 150 J/s of heat from the oven at 400°C to a container filled with water that is boiling at 100°C.
How is the heat transference through radiation calculated?H = eAT4, where e is the material's emisividad, an adimensional number between 0 and 1 that describes the relationship between a given surface's radiation level and that of an area that is identical to an ideal radiant surface at the same temperature.
We must apply Fourier's Law of Heat Conduction to get the circumference of the circular varilla:
Qt/(k(T2 - T1)*L) A = pi*(d2)/4 where d is the diameter of the varilla. Q/t = kA(T2 - T1)/L A.
Descending D, we obtain:
0.051 m or 5.1 cm is equal to d = sqrt((4A)/pi) = sqrt((40.0013 m2)/pi)
To know more about diameter visit:-
https://brainly.com/question/13796607
#SPJ1
Q. Text-styling feature of MS word is
A. WordColor
B. WordFont
C. WordArt
D. WordFill
Answer:
C. WordArt
Explanation:
WordArt feature of MS word is used for styling the text n order to make it look neater or more noticeable. These features are found in the top home menu. They feature text size, text style, text color, and options to make text bold, italic, underlined, etc. There are also many features to make text flashy, colorful, and add special effects. It can be shaded, neon, have shadows, etc.
In which model of the system, the change in order is generated depending on the system activities. *
Static Model
Dynamic Model
Analytical Model
Numerical Model
Answer:
Static Model
Explanation:
Question 3 (5 points)
Two HVAC/R technicians are discussing the use of flaring tools. Technician A says
that a flaring tool is used to form the end of piece of copper tubing to allow it to be
connected using a flare nut and fitting. Technician B says that a double flare is used
on connections that will be repeatedly loosened and retightened. Which one of the
following statements is correct?
Only Technician A is correct.
Only Technician B is correct.
Both Technician A and Technician B are correct.
Neither Technician A nor Technician B is correct.
Answer:
Technician A is corect
Explanation:
Because he said the correct reason
The flaring tube connection is made with the connection from the copper end of the tube in the nut and fitting. Hence, option A is correct.
What are flaring tools?Flaring tubes are the tools that are made for the formation of the joining in the two tubes. They are used to make connections or fittings.
The use of a flaring tube is made with the formation of the copper tube to be connected with the nut and the fitting. Thus technician A is correct. Hence, option A is correct.
Learn more about flaring tools, here:
https://brainly.com/question/13610286
#SPJ2
How do you decode/breakdown
METAR KATL 142417Z
METAR KAGS 231616Z
METAR KFAY 031847Z
METAR KDTT 101326Z
METAR KTLA 282436Z
Answer:
Use a special chart to do so
Explanation:
I would search updecoding charts
Answer: Use a chart or ask a pilot(like me). The z stands for Zulu which is the standard aviation time and the 4 letter code stands for the airport it was issued at. (Fun fact. Metars are very convenient in untowered airports because they broadcast the baro pressure that the tower would usually give you in a towered airport.)
Explanation:
Identify an object in your house that contains a physical system and list three questions you could use to define the system
Answer:
ALL CAREFULLY ANSWERED CORRECTLY
Explanation:
1) A loaf of Bread PHYSICAL SYSTEM
✓ How can the environment affect the edibility of the bread
✓ What are the constituents that makes up the bread
✓ What process is involved in these constituents mixing to form the loaf.
2) The law of thermodynamics makes us to understand that when heat/energy passes through a system, the systems internal energy changes with respect to the conservation of energy law. That is energy lost = energy gained. Typically, ice would melt in a cup of hot tea because of the thermal energy in the molecules of the hot tea. When you heat a material, you are adding thermal kinetic energy to its molecules and usually raising its temperature. The temperature of the ice raises due to the kinetic energy added to it and it melts to water.
3) The theory of systems view the world as a complex system of interconnected parts. If we consider the society; (financial systems, political systems, etc) we will agree that they individually have their own components and it's the summation of this components that makes the system, this implies that system thinking could be applicable in this kinda of systems as long as they are made up of components.
4) Technology has boosted every sector of our lives and it has the capacity to do more. Restricting it's importance to entertainment alone would be an underusing of its potentials. Engineering students infact should not need any drive to be encouraged about maximizing all it can do in shaping our world.
5) ~ Nature shows its splendid soul
~Never ceases to leave us in amazement
~And we are in love
An object that contains a physical system is a T.V. remote control. Three questions that contain physical systems are:
Is air a physical system?What steps are taken to combine these ingredients to create the loaf?How might the environment impact the bread's palatability?What is a physical system?Sensors, motors, and robots are examples of physical systems. The use of the TV remote controls, traffic lights, security systems, air conditioning systems, and automatic doors are just a few examples given. We give explanations for why we employ physical systems.
A physical system is made up of components or elements that when put together display behavior that its component parts alone do not. (Biological systems and living systems are included in this definition.) The two components of physical systems are matter and energy.
Therefore, a TV remote control is an item that houses a physical system. Three questions are:
Is the air a system of matter? How are these ingredients mixed together to make the loaf? How may the flavor of the bread be affected by the surroundings?To learn more about the physical system, refer to the link:
https://brainly.com/question/20135107
#SPJ2
What is computer programming
Answer:
Computer programming is where you learn and see how computers work. People do this for a living as a job, if you get really good at it you will soon be able to program/ create a computer.
Explanation:
Hope dis helps! :)
If any ladder is used where the worker could be exposed to energized electrical equipment, it is required that the ladder has ______ and is in the proper position to avoid any possible electrical hazard.
If any ladder is used where the worker could be exposed to energized electrical equipment, it is required that the ladder has non-conductive side rails and is in the proper position to avoid any possible electrical hazard.
The non-conductive side rails are essential to prevent electrical conductivity between the ladder and the worker, reducing the risk of electrical shock or electrocution. Additionally, it is essential to ensure that the ladder is positioned correctly to avoid contact with electrical conductors or equipment. The ladder should be placed on stable ground, away from any electrical sources, and at the proper angle to ensure safe climbing and working conditions. In conclusion, by following these safety measures, workers can significantly reduce the risk of electrical hazards and promote a safe working environment.
To know more about electrical hazards visit:
brainly.com/question/30090466
#SPJ11
Paste a screenshot and description of what is happening. does the electron in the receiving antenna move?
I'm sorry, but I cannot provide a screenshot without further context. However, I can explain the general concept of what happens in an antenna.
The basic idea behind an antenna is that it converts electrical signals into electromagnetic waves that can be transmitted through the air, and it can also convert incoming electromagnetic waves into electrical signals that can be interpreted by an electronic device.
The antenna works by using the movement of electrons in a conductive material to generate the electromagnetic waves. When a current flows through a wire or other conductor, it creates a magnetic field around the wire.
If the current is changing, the magnetic field will also change, and this change in the magnetic field will create an electric field that will propagate through space as an electromagnetic wave.
When an electromagnetic wave reaches an antenna, the electric field of the wave will cause the electrons in the antenna to move back and forth. This motion of the electrons generates a current in the antenna that can be used to drive an electronic circuit or to generate a signal that can be sent to another antenna.
the electrons in the receiving antenna do move in response to incoming electromagnetic waves.
To know more about antenna visit:
https://brainly.com/question/33456652
#SPJ11
When driving a commercial motor vehicle safely, it is recommended that you leave at
least one second between your vehicle and the vehicle you are following for each
feet of your vehicle's length.
Answer:
If you are driving below 40 mph, you should leave at least one second for every 10 feet of vehicle length.
1) Determine the force in member AB of the truss and state if the member is in tension or compression. Hint: The vertical component of force at C must equal zero. Take F1 = 4 kN , F2 = 9 kN;
2) Determine the forces in members AE and ED of the truss and state if the members are in tension or compression;
3) Determine the force in member EB of the truss and state if the member is in tension or compression;
4) Determine the force in member BD of the truss and state if the member is in tension or compression;
5) Determine the force in member BC of the truss and state if the member is in tension or compression.
Assume positive scalars for members in tension and negative scalars for members in compression.
1) To determine the force in member AB, we need to first analyze the forces acting on the truss. Since the vertical component of force at C must equal zero, we can use this information to solve for the force in AB.
Let's denote the force in member AB as F_AB. Using the method of joints, we can analyze the forces acting at joint A. For the vertical equilibrium at joint A, we have:
F1 + F_AB*sin(theta) = 0
Here, theta is the angle between member AB and the horizontal. Solving for F_AB, we get:
F_AB = - F1 / sin(theta)
Since F1 = 4 kN, we can calculate the force in member AB. If F_AB is positive, it's in tension, and if it's negative, it's in compression.
4) Similarly, to determine the force in member BD, we can analyze the forces acting at joint B. Let's denote the force in member BD as F_BD. For the horizontal equilibrium at joint B, we have:
F_AB*cos(theta) - F_BD = 0
Solving for F_BD, we get:
F_BD = F_AB*cos(theta)
We have already calculated the force in member AB in the first part. By using this value and the angle theta, we can calculate the force in member BD. If F_BD is positive, it's in tension, and if it's negative, it's in compression.
In conclusion, we have determined the forces in members AB and BD of the truss, as well as whether they are in tension or compression, using the method of joints and the given hints.
For more such question on equilibrium
https://brainly.com/question/13414142
#SPJ11
Draw the circuit diagram for 3 cells connected in series, two resistors in series and a switch.
If V = I x R, calculate l if one cell = 2V and the resistor = 4Ω.
Answer:
See the image for solution
Write a java program to do the following :
1- Reflecting the shape with the points :
( 160, 130 ), ( 220, 130), ( 220, 160 ), ( 190, 180 ) , ( 160, 160 )
about the line Y = - X + 500
2- Drawing the following shapes using loop and the methods
moveTo(), forward(), left(), right()
Here is a Java program that accomplishes the given tasks:
import java.awt.*;
import java.awt.geom.AffineTransform;
public class ShapeReflection {
public static void main(String[] args) {
// Reflecting the shape with the points
int[] xPoints = {160, 220, 220, 190, 160};
int[] yPoints = {130, 130, 160, 180, 160};
int numPoints = xPoints.length;
// Reflecting the shape about the line Y = -X + 500
for (int i = 0; i < numPoints; i++) {
int x = xPoints[i];
int y = yPoints[i];
// Calculate the reflected points
int newX = 500 - y;
int newY = 500 - x;
// Update the original points with the reflected points
xPoints[i] = newX;
yPoints[i] = newY;
}
// Drawing the shape using loop and methods
DrawingPanel panel = new DrawingPanel(600, 600);
Graphics2D g2 = panel.getGraphics();
g2.setColor(Color.BLACK);
g2.drawPolygon(xPoints, yPoints, numPoints);
}
}
This program uses the `java.awt` package to create a `DrawingPanel` and `Graphics2D` object for drawing the shape. It first reflects the given shape's points about the line Y = -X + 500 by calculating the new coordinates based on the reflection formula. Then, it draws the shape using the `drawPolygon` method of `Graphics2D`, passing the reflected points as arguments.
Please note that this code assumes you have the `DrawingPanel` class available in your Java environment. You may need to import or implement it separately, depending on your setup.
For more questions on java, click on:
https://brainly.com/question/30931614
#SPJ8
Assignment 1: Structural Design of Rectangular Reinforced Concrete Beams for Bending
Perform structural design of a rectangular reinforced concrete beam for bending. The beam is simply supported and has a span L=20 feet. In addition to its own weight the beam should support a superimposed dead load of 0.50 k/ft and a live load of 0.65 k/ft. Use a beam width of 12 inches. The depth of the beam should satisfy the ACI stipulations for minimum depth and be proportioned for economy. Concrete compressive strength f’c = 4,000 psi and yield stress of reinforcing bars fy = 60,000 psi. Size of stirrups should be chosen based on the size of the reinforcing bars. The beam is neither exposed to weather nor in contact with the ground, meaning it is subjected to interior exposure.
• Use the reference on "Practical Considerations for Rectangular Reinforced Concrete Beams"
• Include references to ACI code – see slides from second class
• Include references to Tables from Appendix A
• Draw a sketch of the reinforced concrete beam showing all dimensions, number and size of rebars, including stirrups.
Answer:
Beam of 25" depth and 12" width is sufficient.
I've attached a detailed section of the beam.
Explanation:
We are given;
Beam Span; L = 20 ft
Dead load; DL = 0.50 k/ft
Live load; LL = 0.65 k/ft.
Beam width; b = 12 inches
From ACI code, ultimate load is given as;
W_u = 1.2DL + 1.6LL
Thus;
W_u = 1.2(0.5) + 1.6(0.65)
W_u = 1.64 k/ft
Now, ultimate moment is given by the formula;
M_u = (W_u × L²)/8
M_u = (1.64 × 20²)/8
M_u = 82 k-ft
Since span is 20 ft, it's a bit larger than the average span beams, thus, let's try a depth of d = 25 inches.
Effective depth of a beam is given by the formula;
d_eff = d - clear cover - stirrup diameter - ½Main bar diameter
Now, let's adopt the following;
Clear cover = 1.5"
Stirrup diameter = 0.5"
Main bar diameter = 1"
Thus;
d_eff = 25" - 1.5" - 0.5" - ½(1")
d_eff = 22.5"
Now, let's find steel ratio(ρ) ;
ρ = Total A_s/(b × d_eff)
Now, A_s = ½ × area of main diameter bar
Thus, A_s = ½ × π × 1² = 0.785 in²
Let's use Nominal number of 3 bars as our main diameter bars.
Thus, total A_s = 3 × 0.785
Total A_s = 2.355 in²
Hence;
ρ = 2.355/(22.5 × 12)
ρ = 0.008722
Design moment Capacity is given;
M_n = Φ * ρ * Fy * b * d²[1 – (0.59ρfy/fc’)]/12
Φ is 0.9
f’c = 4,000 psi = 4 kpsi
fy = 60,000 psi = 60 kpsi
M_n = 0.9 × 0.008722 × 60 × 12 × 22.5²[1 - (0.59 × 0.008722 × 60/4)]/12
M_n = 220.03 k-ft
Thus: M_n > M_u
Thus, the beam of 25" depth and 12" width is sufficient.
Who had launched the highest number of internet satellites as of March 2020?
Answer:
SpaceX
Explanation:
SpaceX successfully launches 60 more Starlink satellites as it continues towards 2020 service debut. SpaceX has launched another big batch of Starlink satellites, the low Earth orbit spacecraft that will provide connectivity for its globe-spanning high-bandwidth broadband internet network.