1. Use for loops in Matlab to solve the below function using 3-point Gaussian quadrature. The limits are in increments of \( 2.5 \) (i.e., \( 0,2.5,5 \) ). 2. Use for loops in Matlab to solve the belo
Answers
To solve the given function using 3-point Gaussian quadrature with the limits in increments of 2.5 using for loops in MATLAB, we can follow these steps:
Step 1: Define the function to be integrated (in this case,\(f(x) = x^3 + 2x^2 + 1)\) as a separate function in MATLAB. Let's name this function as myFunction. It should take a single input (x) and output the value of the function at x. For example:function y = myFunction(x) \(y = x.^3 + 2.*x.^2 + 1\);end
Step 2: Define the limits of integration as a and b. In this case, a = 0 and b = 5. We also need to define the number of intervals (n) as 2 because the limits are in increments of 2.5. Therefore, each interval is of length 2.5. We can calculate the interval length as\(h = (b-a)/(2*n) = 1.25.\)
Step 3: Initialize the values of the 3-point Gaussian quadrature weights and points. These values can be found from a table. Let's name these weights and points as w and x, respectively. We can define them as:\(w = [5/9, 8/9, 5/9]; x = [-sqrt(3/5), 0, sqrt(3/5)];\)
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Related Questions
Determine the enthalpy, volume and density of 1.0 kg of steam at a pressure of 0.5 MN/m2 and with a dryness fraction of 0.96
Answers
Answer:
Enthalpy, hsteam = 2663.7 kJ/kg
Volume, Vsteam = 0.3598613 m^3 / kg
Density = 2.67 kg/ m^3
Explanation:
Mass of steam, m = 1 kg
Pressure of the steam, P = 0.5 MN/m^2
Dryness fraction, x = 0.96
At P = 0.5 MPa:
Tsat = 151.831°C
Vf = 0.00109255 m^3 / kg
Vg = 0.37481 m^3 / kg
hf = 640.09 kJ/kg
hg = 2748.1 kJ/kg
hfg = 2108 kJ/kg
The enthalpy can be given by the formula:
hsteam = hf + x * hfg
hsteam = 640.09 + ( 0.96 * 2108)
hsteam = 2663.7 kJ/kg
The volume of the steam can be given as:
Vsteam = Vf + x(Vg - Vf)
Vsteam = 0.00109255 + 0.96(0.37481 - 640.09)
Vsteam = 0.3598613 m^3 / kg
From the steam table, the density of the steam at a pressure of 0.5 MPa is 2.67 kg/ m^3
Appears to meet all the criteria for being an objective.
Is applicable to almost any cognitive learning situation.
Example:
"Given a multiple-choice test, complete the test and achieve a score of at least nine out of ten correct."
Answers
The above-stated example appears to meet all the criteria for being objective. An objective is a goal, target, or aim. An objective provides you with an understanding of what you must accomplish, measure, or do to accomplish a task.
It enables you to concentrate your energies and abilities and chart a course of action to attain the desired result or outcome. An objective is measurable and achievable within a given time frame.The above-stated example of a multiple-choice test appears to meet all the criteria for being an objective. It is applicable to almost any cognitive learning situation. It comprises a clear and concise statement of the desired result or outcome. It is measurable since it defines the precise outcome required, which is to achieve a score of at least nine out of ten correct. The objective is achievable within a given time frame since the test-taker has to complete the test and achieve the stated score.
It is applicable to almost any cognitive learning situation. It comprises a clear and concise statement of the desired result or outcome. It is measurable since it defines the precise outcome required, which is to achieve a score of at least nine out of ten correct. The objective is achievable within a given time frame since the test-taker has to complete the test and achieve the stated score.The example demonstrates a precise and specific outcome that can be measured, making it a well-defined objective. The objective does not include any value judgments or subjective opinions.
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which of the following is a function of a safety device
Answers
Answer:
what are the options available?
What signal propagation phenomena causes the diffusion, or the reflection in multiple different directions, of a signal?
Answers
In the radio communication system, multipath is the propagation phenomenon that causes diffusion or reflection in multiple different directions of a signal.
Multipath is a propagation mechanism that impacts the propagation of signals in radio communication. Multipath results in the transmission of data to the receiving antenna by two or more paths. Diffusion and reflection are the causes that create multiple paths for the signal to be delivered.
Diffraction occurs when a signal bends around sharp corners; while reflection occurs when a signal impinges on a smooth object. When a signal is received through more than one path because of the diffraction or reflection, it creates phase shifting and interference of the signal.
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Which of the following is false about most machine learning models?
They require numbers or collections of numbers as input.
They are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc)
They are trained by iteratively adjusting their parameters to minimize a loss function.
Once trained, their model parameters can be used to make new predictions in a process called a “model inference algorithm.”
Answers
The false statement about most machine learning models is that: B. they are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc).
What is machine learning?Machine learning (ML) is also referred to as deep learning or artificial intelligence (AI) and it can be defined as a subfield in computer science which is typically focused on the use of data-driven techniques (methods), computer algorithms, and technologies to develop a smart computer-controlled robot with an ability to automatically perform and manage tasks that are exclusively meant for humans or solved by using human intelligence.
Generally speaking, machine learning models are designed and developed to accept numerical data (numbers) or collections of numerical data (numbers) as an input.
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There are two potential fall hazards in this image. What are they?
Answers
Answer:
Lack of fall protection and Scaffold is overloaded
Wednesday Addams is a graduating senior who is going to take her final exams next week. She divides her available weekend study time into 10 periods of equal length. She is taking four courses, two of which she judges are easy and two are difficult. She estimates that she is going to earn grade points depending on the number of periods spent on each course. Tyler Galpin, a friend of Wednesday Addams, arrives in town and calls Wednesday Addams for a date. Assessing her situation, Wednesday decides that all she really needs is a total of 16 grade points gained from any of the courses to graduate. She wants to allocate her time so that she spends the fewest number of study periods necessary to guarantee her receiving at least 16 grade points. Formulate this decision problem as an integer programming model and solve using OPL. Number of periods studied Grade points from
Easy course Difficult course
0 0 0
1 4 2
2 4 2
3 7 4
4 8 6
5 8 9
Answers
The solution obtained from OPL is, X = 1, Y = 4, and the optimal value of Z is 10. She estimates that she is going to earn grade points depending on the number of periods spent on each course.
Tyler Galpin, a friend of Wednesday Addams, arrives in town and calls Wednesday Addams for a date. Assessing her situation, Wednesday decides that all she really needs is a total of 16 grade points gained from any of the courses to graduate.
She wants to allocate her time so that she spends the fewest number of study periods necessary to guarantee her receiving at least 16 grade points. We need to formulate this decision problem as an integer programming model and solve using OPL.
So she gets 4 grade points if she spends one period studying an easy course and 2 grade points if she spends one period studying a difficult course. Number of periods studied Grade points from Easy course Difficult course04 0 0 14 4 2 24 4 2 37 7 4 48 8 6 58 8 9
So, the given problem can be formulated as follows: Minimize \(Z = x11 + x12 + x13 + x14\)
Subject to\(4 x11 + 4 x12 + 7 x13 + 8 x14 ≥ 16\)
(Easy courses)\(2 x11 + 2 x12 + 4 x13 + 6 x14 ≥ 16\)
(Difficult courses\()Y ≥ 1x11, x12, x13, x14,\)
Y are integers\(xij ≥ 0 (i = 1,2,3,4; j = 1, 2, …, 10)\)
Below is the OPL code:
int easy\([1..4]=[4,4,7,8];\)
int hard\([1..4]=[2,2,4,6];\)
dvar int \(x[1..4][1..10] in 0..10\);
dvar int y in 1..4;
minimize sum\((i in 1..4, j in 1..10)\)
The solution obtained from OPL is, X = 1, Y = 4, and the optimal value of Z is 10.
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A 4-pole, 60-Hz, 690-V, delta-connected, three-phase induction motor develops 20 HP at full-load slip of 4%. 1) Determine the torque and the power developed at 4% slip when a reduced voltage of 340V is applied. 2) What must be the new slip for the motor to develop the same torque when the reduced voltage is applied
Answers
Answer:
1. i. 20 Nm ii. 4.85 HP
2. 16.5 %
Explanation:
1) Determine the torque and the power developed at 4% slip when a reduced voltage of 340V is applied.
i. Torque
Since slip is constant at 4 %,torque, T ∝ V² where V = voltage
Now, T₂/T₁ = V₂²/V₁² where T₁ = torque at 690 V = P/2πN where P = power = 20 HP = 20 × 746 W = 14920 W, N = rotor speed = N'(1 - s) where s = slip = 4% = 0.04 and N' = synchronous speed = 120f/p where f = frequency = 60 Hz and p = number of poles = 4.
So, N' = 120 × 60/4 = 30 × 60 = 1800 rpm
So, N = N'(1 - s) = 1800 rpm(1 - 0.04) = 1800 rpm(0.96) = 1728 rpm = 1728/60 = 28.8 rps
So, T = P/2πN = 14920 W/(2π × 28.8rps) = 14920 W/180.96 = 82.45 Nm
T₂ = torque at 340 V, V₁ = 690 V and V₂ = 340 V
So, T₂/T₁ = V₂²/V₁²
T₂ = (V₂²/V₁²)T₁
T₂ = (V₂/V₁)²T₁
T₂ = (340 V/690 V)²82.45 Nm
T₂ = (0.4928)²82.45 Nm
T₂ = (0.2428)82.45 Nm
T₂ = 20.02 Nm
T₂ ≅ 20 Nm
ii. Power
P = 2πT₂N'
= 2π × 20 Nm × 28.8 rps
= 1152π W
= 3619.11 W
converting to HP
= 3619.11 W/746 W
= 4.85 HP
2) What must be the new slip for the motor to develop the same torque when the reduced voltage is applied
Since torque T ∝ sV² where s = slip and V = voltage,
T₂/T₁ = s₂V₂²/s₁V₁²
where T₁ = torque at slip, s₁ = 4% and voltage V₁ = 690 V and T₂ = torque at slip, s₂ = unknown and voltage V₂ = 340 V
If the torque is the same, T₁ = T₂ ⇒ T₂T₁ = 1
So,
T₂/T₁ = s₂V₂²/s₁V₁²
1 = s₂V₂²/s₁V₁²
s₂V₂² = s₁V₁²
s₂ = s₁V₁²/V₂²
s₂ = s₁(V₁/V₂)²
substituting the values of the variables into the equation, we have
s₂ = s₁(V₁/V₂)²
s₂ = 4%(690/340)²
s₂ = 4%(2.0294)²
s₂ = 4%(4.119)
s₂ = 16.47 %
s₂ ≅ 16.5 %
Fill in the blank to output the quotient of dividing 100 by 42. print (100______42)
Answers
Answer:
print(100/42)
Explanation:
This is the operand for division in python and some other languages.
The fracture strength of glass may be increased by etching away a thin surface layer. It is believed that the etching may alter the surface crack geometry (i. E. Reduce crack length and increase tip radius). Calculate the ratio of the etched and original crack tip radii if the fracture strength is increased by a factor of 4 when 63. 0% of the crack length is removed
Answers
Therefore, the difference between the original crack tip radius and the etched crack tip radius is 0.37.
The stress intensity factor (K), a measurement of the stress at a crack's tip, and a material's fracture strength are connected. Reducing the crack length and increasing the crack tip radius can increase a material's fracture strength, according to the stress intensity factor theory.
A reduction in the crack length of 1 - 0.63 = 0.37 is indicated by the removal of 63.0% of the crack length. Given that the fracture tip radius has presumably widened correspondingly, we can write:
Y1 * σ * √π * R1 = 4 * Y2 * σ * √π * R2
Dividing by Y2 * σ * √π, we get:
R1 / R2 = 4 * Y2 / Y1
R2 = R1 * (1 - 0.63) = R1 * 0.37
R1 / (R1 * 0.37) = 4 * Y2 / Y1
Dividing both sides by R1, we get:
1 / 0.37 = 4 * Y2 / Y1
R2 / R1 = 0.37 / 1 = 0.37
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One of the cylinder's content is under pressure at 1900 psi (per the gauge) at 70°F. As the day heats up because of the sun, the temperature increases to 105°F. What is the pressure at 105°F?
Answers
The pressure would be doubled (3800psi) as the day heats up because of the sun, the temperature increases to 105°F.
What is relationship between pressure and temperature?If the temperature is on the kelvin scale, then P and T are directly proportional (again, when volume and moles of gas are held constant); if the temperature on the kelvin scale increases by a certain factor, the gas pressure increases by the same factor. We find that temperature and pressure are linearly related.Examine the connection between a gas's temperature and the pressure it applies to its container. This is generally known as Gay-Law Lussac's or Amontons' Law of Pressure-Temperature. A gas will exert greater pressure on its container as its temperature rises.As the temperature rises, the pressure must as well since pressure is the force the particles per unit of area exert on the container. If the quantity of particles and the container's volume remain constant, pressure and temperature are proportionate.Learn more about Pressure and temperature refer to :
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FILL IN THE BLANK. ___ manages all of the activities involved in creating value by producing goods and services and distributing them to customers.
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Operations Management manages all of the activities involved in creating value by producing goods and services and distributing them to customers.
What is Operations Management?
To achieve goals, increase productivity, and boost profits, corporate operations are managed. A subset of management known as operations management is responsible for monitoring a service's or product's entire production process, from the input stage to the finished stage. This entails organizing, planning, and managing operations, service delivery, and manufacturing and production procedures to achieve the desired result of a high-quality good or service that meets customer needs. Operations management oversees the fundamental operations of any organization.
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from the expression for y(t), what is the ‘time constant ‘ ’’ of the response – what does it mean? what is y(t) if the time constant ‘ ’ = 1/a ?
Answers
The expression for y(t) in a typical first-order linear time-invariant system can be given as y(t) = A (1 − e^(-t/τ)) where τ is the time constant of the response.
The time constant, represented by the Greek letter tau (τ), is the time required for the system's response to reach 63.2% of its steady-state value. It represents the time taken by the system to respond to a step input or disturbance and reach 63.2% of its final value.
If the time constant is given as 'a', then y(t) can be expressed as y(t) = A(1 - e^(-at)). This means that the system response will reach 63.2% of its steady-state value after a time duration of 'a'.
Therefore, if the time constant is equal to 1/a, then the expression for y(t) can be written as y(t) = A(1 - e^(-t/(1/a))) which is equivalent to y(t) = A(1 - e^(-at)).
In summary, the time constant is a measure of how fast a system can respond to a step input or disturbance, and it is equal to the time taken by the system to reach 63.2% of its steady-state value.
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ASAP PLease electrical engineering problem
Answers
Answer:
see attached
Explanation:
As you know, a full adder produces the binary value in (carry, output) that is the the number of true input bits among the (carry in, A, B) inputs.
The annotated diagram attached shows the bit values for a 4-bit full adder/subtractor.
__
Additional comment
If the numbers are considered "signed", then the top diagram will generate an "overflow" based on the difference between the carry C4 and the output O4.
When a magnet is quickly pushed into a coil of wire connected to a circuit _________.
Answers
Answer:
Work is needed to overcome a resistance to the push.
a system has been having intermittent problems. miya decides to measure the output voltage of the power supply. the voltage exceeds the expected value by an unreasonable amount. what is the most likely consequence?
Answers
It's likely that the system is experiencing over voltage if a power supply's output voltage significantly exceeds the expected value.
What additional wattage over peak do you advise the customer buying?Between what you require and the power supply's maximum rating, we advise leaving at least 10% to 20% of headroom. The idea that a high wattage power supply will push too much power into your devices, leading to overheating and burnout, is unfounded.
What is a typical strategy used by electric providers to lower peak electricity demand?The peak demand for electricity can be decreased by scheduling all of the electric baseboard space heaters in public spaces to shut off during projected peak hours.
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find the minimum coefficient of friction μμmu needed to prevent the spherical shell from slipping as it rolls down the slope
Answers
The minimum coefficient of friction required to prevent slipping is sin(38.0°) which is 0.615.
What is the minimum coefficient of friction required to prevent slipping?To get minimum coefficient of friction (μ) required to prevent slipping, we will equate the gravitational force component along the slope to the frictional force.
The gravitational force component along the slope can be calculated as: Fg = m * g * sin(θ).
The frictional force can be calculated as: Ff = μ * N,
Setting Fg = Ff, we have:
m * g * sin(θ) = μ * N
m * g * sin(θ) = μ * m * g
sin(θ) = μ
So, the minimum coefficient of friction needed to prevent slipping is equal to the sine of the angle of the slope which is sin(38.0°).
Full question:
A hollow, spherical shell with mass 2.00kg rolls without slipping down a slope angled at 38.0?. Find the minimum coefficient of friction needed to prevent slipping.
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True or false. flashing arrow panels are only used at night.
Answers
The flashing arrow panels are not used just at night but are used even during the day time. These are necessary to give the directional information to the drivers. Thus, the given statement is false.
What are the safety instructions?The safety instructions are necessary for the drivers as absence of these would lead to increased number of accidents which could lead to death of a number of people. The flashing arrow panels is one of these instructions.
Flashing arrow panels are used during the day as well as at the night to give advance warning and directional information to the drivers where it is required to move to the right or to the left into another lane.
Some of the safety systems used at level crossings include amber and red warning lights on majority of roads, people should stop when the amber lights come on, unless vehicle has already crossed the stop line.
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how many pairs of wires get switched when making a gigabit ethernet crossover cable
Answers
Answer:ALL FOUR PAIRS
Explanation: first major difference is the gigabit standards require the use of all four pairs (all eight wires), unlike Fast Ethernet which only utilizes two pairs of wires. As a result, in Gigabit Ethernet, all four pairs must be crossed when building a Crossover cable
When making a Gigabit Ethernet crossover cable, two pairs of wires get switched. Ethernet cables are used to connect computer networks that enable communication between different devices. The two most popular types of Ethernet cables are crossover and straight cables.
Ethernet cables use four pairs of wires to transmit data, out of which two pairs are utilized for transmitting and two pairs are used for receiving. In a straight-through Ethernet cable, the wire arrangement is identical at both ends. For this reason, a straight-through cable is employed to connect devices that belong to the same category. In contrast, a crossover Ethernet cable is employed to connect devices belonging to different categories. A crossover cable reverses the transmitting and receiving pairs, allowing the devices to communicate with one another. In a Gigabit Ethernet crossover cable, two pairs of wires are swapped or switched. These pairs are Pins 1-2 (White and Orange) and Pins 3-6 (White and Green). Therefore, we can conclude that two pairs of wires get switched when making a Gigabit Ethernet crossover cable.
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The view factor for radiation emitted by surface 1 to surface 2 was calculated to be 0.4. The working area of surface 1 is 0.01 m2, the working area of surface 2 is 0.04 m2. What is the view factor for radiation emitted by surface 2 to surface 1?
Answers
Answer:
The view factor for radiation emitted by surface 2 to surface 1 is 0.1
Explanation:
Given
\(F_{12} = 0.4\)
\(A_1 = 0.01m^2\)
\(A_2 = 0.04m^2\)
Required
Determine \(F_{21}\)
To do this, we make use of the following equivalent ratio
\(A_1 * F_{12} = A_2 * F_{21}\)
Make \(F_{21\) the subject
\(F_{21} = \frac{A_1 * F_{12}}{ A_2}\)
Substitute values into the equation
\(F_{21} = \frac{0.01m^2 * 0.4}{0.04m^2}\)
\(F_{21} = \frac{0.01 * 0.4}{0.04}\)
\(F_{21} = \frac{0.004}{0.04}\)
\(F_{21} = 0.1\)
A wheel tractor-scraper is operating on a 3% adverse grade. Assume
that no power derating is required for equipment condition, altitude,
and temperature. Use equipment data from Figure 6.10.
Disregarding traction limitations, what is the maximum value of
rolling resistance (in lb per ton) over which the empty unit can
maintain a speed of 15 mph?
Answers
The empty wheel tractor-scraper can maintain a speed of 15 mph on a 3% adverse grade as long as the rolling resistance is less than or equal to 1102 lb per ton.
What is traction?Traction is basically the action of drawing or pulling something over a surface, especially a road or track.
From Figure 6.10, we can find the horsepower-to-weight ratio (HP/T) of the empty wheel tractor-scraper at a speed of 15 mph on a 3% adverse grade. For a 631G wheel tractor-scraper, the HP/T is approximately 0.045.
The rolling resistance (Rr) can be calculated using the equation:
Rr = (M x g x %grade) / V
Where M is the weight of the empty wheel tractor-scraper in tons, g is the acceleration due to gravity (32.2 ft/s²), %grade is the grade expressed as a decimal (3% = 0.03), and V is the speed in mph.
Assuming the weight of the empty wheel tractor-scraper is 46 tons (92,000 lb), we can calculate the maximum value of rolling resistance as follows:
Rr = (46 * 2000 * 32.2 * 0.03) / 15
Rr = 1102 lb
Thus, the answer is 1102 lb.
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Your question seems incomplete, the probable complete question is:
A wheel tractor-scraper is operating on a 3% adverse grade. Assume that no power derating is required for equipment condition, altitude, and temperature. Use equipment data from Figure 6.10. Disregarding traction limitations, what is the maximum value of rolling resistance (in lb per ton) over which the empty unit can maintain a speed of 15 mph?
Hey guys can anyone list chemical engineering advancement that has been discovered within the past 20 years
Answers
Nanopesticides. The world population keeps growing. ...
Enantio selective organocatalysis. ...
Solid-state batteries. ...
Flow Chemistry. ...
Porous material for Water Harvesting. ...
Directed evolution of selective enzymes. ...
From plastics to monomers. ...
in a linked list, the memory locations of the nodes do not determine their logical order.
Answers
The memory locations of nodes in a linked list do not determine their logical order, but rather their order is determined by the links between nodes.
A linked list is a data structure where each node stores a value and a pointer to the next node. Unlike arrays, the memory locations of nodes are not necessarily contiguous, so the logical order of nodes is not determined by their physical location in memory. Instead, the logical order is determined by the links between nodes. Each node points to the next node in the list, and the last node points to a null value, indicating the end of the list. This allows for efficient insertion and deletion of nodes at any point in the list, without having to shift all subsequent elements.
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What is the role of static function and this pointer in C++?
Answers
A static function is a class member function that can be used even if a class object has not yet been initialized. Other than static variables, a static function is unable to access any of its class's variables. The object that calls the function is indicated by the 'this' reference.
Does this pointer exist in the static function?All nonstatic member function calls receive the "this" pointer as a secret parameter, and all nonstatic functions have access to it as a local variable inside their bodies. Static member functions don't have a "this" pointer because they can be invoked without an object (with class name).
What do these pointer and static functions do?A static function is a class member function that can be used even if a class object has not yet been initialized. Other than static variables, a static function is unable to access any of its class's variables. The object that calls the function is indicated by the 'this' reference.
What does this pointer do, please explain with an example?A pointer is a variable that contains the address of another variable. Pointer stores the address of a variable, as opposed to other variables that store data of a specific kind. For instance, an integer variable stores an integer value, whereas an integer pointer stores the address of an integer variable.
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differentiate between isohyetal method and arithmetical average method of rainfall
Answers
Answer:
Explained below
Explanation:
The isohyetal method is one used in estimating Rainfall whereby the mean precipitation across an area is gotten by drawing lines that have equal precipitation. This is done by the use of topographic and other data to yield reliable estimates.
Whereas, the arithmetic method is used to calculate true precipitation by the way of getting the arithmetic mean of all the points or arial measurements that will be considered in the analysis.
how can we prevent chemical hazards in labotary
Answers
Answer:
We can prevent it by:
a) By wearing GOOGLES.
b) By wearing our Lab coat.
c) Fire extinguisher should always be present in the lab.
d) Hand Gloves must be worn.
e) No playing in the lab.
f) No touching of things/equipment's e.g bottles, in the lab.
g) No eating/snacking in the lab.
h) Always pay attention, no gisting.
i) Adult/qualified person must be present in the lab with pupils/students.
Explanation:
Hope it helps.
draw the flowchart or write the pseudocode for an application that allows a bowler to enter scores for three bowling games and then displays the average.
Answers
The pseudocode for an application that allows a bowler to enter scores for three bowling games and then displays the average is stated below;.
What does pseudocode mean?
Pseudocode is a made-up, unofficial computer language that aids in the creation of algorithms by programmers. Pseudocode, as used in computer science, is a straightforward explanation of an algorithm's or another system's stages.
#include <iostream>
using namespace std;
int main()
{
int score1, score2, score3, averageScore;
cout << "Enter the bowler's score for the 1st game: ";
cin >> score1;
cout << "Enter the bowler's score for the 2nd game: ";
cin >> score2;
cout << "Enter the bowler's score for the 3rd game: ";
cin >> score3;
The averageScore = (score1 + score2 + score3) / 3;
cout << "The bowler's average score is :";
cout << averageScore << endl;
return 0;
}
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A steel disc of outer radius r 1 =173.0 mm and is pivoted about its centre with low friction bearings and is free to rotate. It has a larger steel gear with N 1 =135 teeth fixed to it, so that the disc and gear rotate together as one rigid body. A cable is wound around the disk and connects a mass of m=48.0 kg. The large gear with 135 teeth meshes with a smaller gear with N 2 =30 teeth, mounted on a second shaft as shown in the diagram below. What clockwise torque is required to be applied to the second shaft In order to prevent vertical acceleration of the 48.0 kg mass? Use gravitational acceleration of 9.81 m/s 2 downwards, expressing your answer in units of Nm to one decimal place. Do not include a sign as the direction is known
Answers
A steel disc of outer radius r 1 =173.0 mm and is pivoted about its centre with low friction bearings and is free to rotate, the clockwise torque required to be applied to the second shaft in order to prevent vertical acceleration of the 48.0 kg mass is 81.5 Nm.
The first step is to calculate the tension in the cable, which is equal to the weight of the mass it supports:
T = m * g = 48.0 kg * 9.81 m/s^2 = 471.2 N
The torque applied to the large gear is equal to the tension in the cable multiplied by the radius of the disk:
τ = T * r1 = 471.2 N * 0.173 m = 81.49 Nm
Since the large and small gears are meshed together and rotating as a single rigid body, the torque applied to the second shaft is equal in magnitude but opposite in direction to the torque applied to the large gear:
τ2 = -τ = -81.49 Nm
Therefore, the clockwise torque required to be applied to the second shaft in order to prevent vertical acceleration of the 48.0 kg mass is 81.5 Nm.
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Read the house of Quality Article and Give an example
using house of Quality for an engineering design
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The House of Quality is a tool used in engineering design to capture customer requirements and align them with engineering specifications.
The House of Quality is a widely used tool in the field of engineering design to ensure that customer requirements are effectively translated into engineering specifications. It provides a structured approach for capturing and organizing customer needs, determining the interrelationships between these needs, and aligning them with engineering characteristics or features. By using the House of Quality, engineers can prioritize design requirements, make informed decisions, and track the progress of design solutions.
For example, let's consider the design of a smartphone. The House of Quality for this design project would begin by identifying and prioritizing customer requirements through techniques like surveys, interviews, and market research. These customer requirements could include factors such as battery life, screen size, camera quality, durability, and user interface.
Next, engineers would determine the technical requirements or engineering characteristics that are necessary to meet these customer requirements. These technical requirements may include factors such as battery capacity, display resolution, processor speed, material selection, and operating system compatibility.
The House of Quality matrix is then created, where customer requirements are listed on one side, and technical requirements are listed on the other. The matrix allows engineers to identify the relationships between customer requirements and technical requirements, such as which technical features contribute most to satisfying specific customer needs.
By using the House of Quality, engineers can evaluate the importance of each customer requirement, prioritize design decisions, and track how well the design is meeting those requirements throughout the development process. It serves as a valuable tool for ensuring that the final product aligns with customer expectations and provides a systematic approach to engineering design.
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if you forgot the password you used to protect an access worksheet, how do you reset it?
a.you cannot reset it.
b.there is a password reset and the properties pane for each Excel workbook.
c.you can email it to the office. Com for reset.
d.you can reset it an excellent option in backstage
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If you forget the password used to protect an Excel worksheet, unfortunately, there is no way to reset it.
If you forget the password used to protect an Excel worksheet, unfortunately, there is no way to reset it. The only option is to try to remember the password or use a password recovery tool. Excel does not provide a built-in password reset option in the properties pane or backstage. However, there are third-party software and services available that claim to be able to recover or reset Excel passwords. It's important to note that using such tools may not always be legal, depending on the circumstances, and could potentially harm the security of the file.
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If you forget the password used to protect an Excel worksheet, unfortunately, there is no way to reset it.
If you forget the password used to protect an Excel worksheet, unfortunately, there is no way to reset it. The only option is to try to remember the password or use a password recovery tool. Excel does not provide a built-in password reset option in the properties pane or backstage. However, there are third-party software and services available that claim to be able to recover or reset Excel passwords. It's important to note that using such tools may not always be legal, depending on the circumstances, and could potentially harm the security of the file.
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