2. Prove the statement is true, or find a counter example to show it is false. vx,y ER,√x+y = √x + √y bru 3. True or False? All occurrences of the letter t in the phrase Good Luck are lowercase. Justify your answer. (4) (4) 2

The control used to change the shape of the output wave is called an oscillator.

Within an oscillator, there are various types of controls that can be used to manipulate the output waveform. For example, a potentiometer can be used to adjust the resistance in the oscillator circuit, which can affect the amplitude and shape of the output wave. Additionally, capacitors can be used to alter the frequency and shape of the output waveform by changing the rate at which the oscillator circuit charges and discharges. Overall, the specific control used to change the shape of the output wave depends on the type of oscillator circuit being used and the desired waveform characteristics.

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The appropriate size of a helicopter landing zone (LZ) is A. 50 feet by 50 feet

For small helicopters, a 25 feet by 25 feet (B) area might be sufficient. However, for larger helicopters or those that require additional space for safety considerations, a larger area is necessary.

A 50 feet by 50 feet (A) or 75 feet by 75 feet (D) landing zone could be used for medium-sized helicopters.

The largest helicopters, particularly in military operations, may require an LZ of 100 feet by 100 feet (C) or more.

It's essential to consider the helicopter's specifications and adhere to safety guidelines when designating a landing zone.

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The initial void ratio is the parameter which is used to show the structural foundations for each specimen of sand so that the method and speed of compression would be measured.

Relative density is the mass per unit volume of each specimen of sand which is measured and it has to do with the relative ratio of the density of the sand.

Unit weight is the the exact weight per cubic foot of the sand which is measured.

Please note that your question is incomplete so I gave you a general overview to help you better understand the concept

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The values of sum1 and sum2 if the operands in the expressions are evaluated left to right are; sum1 = 46 and sum2 = 48

In computer programming, the term operand is defined as the object of a mathematical operation or it is the object or quantity that is operated on.

A) If the operands in the expressions are evaluated left to right, then the values of sum1 and sum2 are;

sum1 = (10/2) + 41 = 46

sum2 = 41 + (14/2) = 48

B) If the operands in the expressions are evaluated right to left, then the values of sum1 and sum2 are;

sum1 = (14/2) + 41 = 48

sum2 = 41 + (10/2) = 46

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Answer:

The answer is C

Explanation:

Once you have chosen a topic, the next thing you should do before beginning the research process is: C. discuss your idea with others.

A research topic refers to an event, issue, or subject that a researcher is keenly and deeply motivated or interested in, especially when conducting a study or research.

Based on scientific information and records, it is very important you discuss your idea with others once you have chosen a topic, before beginning the research process.

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Answer:

let me know if this's helpful.

The load required to produce a change in diameter of 10 mm in a cylindrical brass rod is 1.57 N.

A tensile stress of 0.157 MPa is required to produce a change in diameter of 10 mm in a cylindrical brass rod. The deformation is entirely elastic, so the Poisson's ratio for brass is 0.34, and the modulus of elasticity is 97 GPa.

The load required to produce this tensile stress is 1.57 N.

To solve this problem, we can use the following equation:

Stress = (Change in diameter) * (π / (2 * Diameter))

Plugging in the values for the change in diameter, diameter, and Poisson's ratio, we get the following tensile stress:

Stress = (0.001) * (π / (2 * 0.010)) = 0.157 MPa

The load required to produce this tensile stress is then:

Load = Stress * Modulus of Elasticity

Plugging in the values for the tensile stress and modulus of elasticity, we get the following load:

Load = 0.157 MPa * 97 GPa = 1.57 N

Therefore, the load required to produce a change in diameter of 10 mm in a cylindrical brass rod is 1.57 N.

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The answer to Question 37 is false. When there is a concentration of X-ray machines in one building, scatter radiation can become a problem. Scatter radiation is the radiation that is produced when the X-rays interact with matter in the body or in the surrounding environment. This can cause the X-rays to bounce off of objects and walls, creating secondary radiation that can be harmful to people who are not directly involved in the imaging process.

When there are multiple X-ray machines in a building, the amount of scatter radiation can increase significantly. This is because the X-rays from one machine can interact with the other machines, creating a cumulative effect. The more machines there are, the more radiation there is to scatter. This can be a particular problem in small buildings, where the radiation can accumulate quickly and create a hazardous environment for anyone who is in the building.

To reduce the risk of scatter radiation in a building with multiple X-ray machines, it is important to ensure that each machine is properly shielded and that there is adequate space between the machines. This can help to minimize the amount of scatter radiation that is produced and keep everyone in the building safe.

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The pressure exerted by water at point A is 4.75 kN/m^2, or 4.75 kPa.

The specific weight of mercury is 13.6 times that of water. Given that the atmospheric pressure at point A is 15 cm and the height difference between points A and B (h2 - h1) is 30 cm, we can determine the pressure difference between the two points.

The specific weight of a fluid is the weight per unit volume of the fluid. In this case, the specific weight of water is denoted by γw, and the specific weight of mercury is denoted by γm. We can express the relationship between these two specific weights as:

γm = 13.6γw

Since the specific weight of a fluid is directly proportional to the pressure it exerts, we can write:

Pm = 13.6Pw

Where Pm is the pressure exerted by mercury and Pw is the pressure exerted by water.

Using the hydrostatic pressure equation, we can relate the pressure difference to the height difference:

Pw = γw * h1

Pm = γm * h2

Substituting the values and known relationships:

Pw = γw * h1 = 13.6 * γw * h2 = 13.6 * Pw

Simplifying the equation:

12.6 * Pw = 59.8 kN/m^2

Dividing both sides by 12.6:

Pw = 4.75 kN/m^2

Therefore, the pressure exerted by water at point A is 4.75 kN/m^2, or 4.75 kPa.

Please note that there is a discrepancy between the given atmospheric pressure (59.8 kN/m^2) and the calculated pressure of water (4.75 kN/m^2). It is possible that there was an error in the provided atmospheric pressure value or in the calculations.

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Explanation:

Proportional control resists error by applying an opposing influence that is proportional to the error.

Integral control detects and corrects trends in error over time. Derivative control detects and resists abrupt changes in the system.

hopefully this helps! :)

The unit shear along the south shear walls is 450 lb/ft.

The unit shear along the south shear walls of the warehouse one-story building is 450 lb/ft in the east-west direction. Unit shear refers to the shear force per unit length, in this case, per foot, acting on the shear walls. Shear walls play a crucial role in resisting lateral forces and maintaining the structural stability of a building.

In this context, the calculated unit shear of 450 lb/ft indicates the maximum shear force that each foot of the south shear walls can withstand without experiencing excessive deformation or failure. It is important to ensure that the shear walls are designed and constructed to withstand these shear forces adequately.

The adequate anchorage of the roof diaphragm to the shear wall is another important aspect mentioned in the question. Proper anchoring ensures a strong connection between the roof diaphragm and the shear wall, allowing the transfer of shear forces effectively and enhancing the overall structural performance.

By calculating the unit shear, engineers and designers can assess the capacity of the south shear walls to resist the applied forces and ensure the stability and safety of the warehouse building. This information is crucial for designing and evaluating the structural integrity of the building to meet the required safety standards and codes.

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Answer:

A. minimum high-RPM power

Experiential estimating is being used to determine the project duration and total cost.

What is Experiential?
Experiential learning is an educational philosophy that focuses on learning through experience. It involves actively engaging in a hands-on, sensory-based activity that encourages and facilitates learning. This type of learning is often associated with the physical environment, where the learner interacts directly with the environment and the activity to gain knowledge. Experiential learning can also involve activities such as role-playing, simulations, and problem-solving. This approach to learning is based on the idea that learning is most effective when it is meaningful and relevant to the learner. It promotes active learning, reflection, and the development of critical thinking skills.

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Answer:

Here's the MATLAB code to create the table:

% Create a vector of power values from 100 W to 10000 W

P = [100:100:1000, 2000:1000:10000];

% Convert power values from watts to horsepower

HP = P ./ 745.7;

% Create a table to display the results

T = table(P', HP', 'VariableNames', {'Power_W', 'Power_HP'})

This will create a table T with two columns: Power_W for power values in watts and Power_HP for power values in horsepower. The table will show the conversion of power values from 100 W to 10000 W in increments of 100 W up to 1000 W and increments of 1000 W all the way up to 10000 W.

Explanation:

Answer:

Uh- dude if you think I'm gonna download that, think twice...

Answer:

1) This is because too much fuel is needed to get a payload from the surface to orbital altitude an accelerated to orbital speed.

2) This is because space travel present extreme environment that affect machines operations and survival.

Explanation:

Hope it helps

sen yapsana mk halla halla yaw

To determine the tension in cable CAD and the angle theta which the cable makes at the pulley, we need to apply equilibrium equations to the system. The tension in cable CAD is found to be 300 lb, and the angle theta is 30 degrees

To solve this problem, we first draw a free body diagram of the system. We assume that the tree is stationary, and therefore, in equilibrium. The tension in cable AB is given as 600 lb. Next, we consider the pulley and the cable CAD. The tension in cable CAD is denoted as T. To find the angle theta, we consider the vertical and horizontal components of the force acting on the pulley. The vertical component of the force is equal to the tension in cable AB, which is 600 lb. The horizontal component of the force is equal to the tension in cable CAD, which is T. Since the pulley is in equilibrium, the sum of the vertical and horizontal components of the force is equal to zero.

We can express this equilibrium condition mathematically by using trigonometry. Let the angle that cable CAD makes with the horizontal be theta. Then, the vertical component of the force is 600 sin(theta), and the horizontal component of the force is T cos(theta). Equating the sum of the vertical and horizontal components to zero, we obtain:

600 sin(theta) = T cos(theta)

Solving for T, we get:

T = 600 sin(theta) / cos(theta) = 600 tan(theta)

To find the angle theta, we can use the fact that the sum of the angles in a triangle is 180 degrees. The triangle formed by the pulley and the cables AB and CAD is a right triangle, with the angle opposite cable CAD being 90 degrees. Therefore, the angle opposite cable AB is equal to:

90 - theta

The angle opposite cable AB is also equal to the inverse tangent of the ratio of the opposite and adjacent sides of the triangle. That is:

tan(90 - theta) = 600 / T

Substituting T = 600 tan(theta) and simplifying, we obtain:

tan(90 - theta) = 1 / tan(theta)

Using the identity tan(90 - theta) = cot(theta), we get:

cot(theta) = tan(theta)

Solving for theta, we obtain:

theta = 30 degrees

Substituting theta = 30 degrees into T = 600 tan(theta), we get:

T = 600 tan(30) = 300 lb

Therefore, the tension in cable CAD is 300 lb, and the angle theta is 30 degrees.

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Modern cars' complex systems perform all the foregoing functions, with the exception of assisting in the preservation of resale value.

Therefore, the answer is "helping retain resale value".

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Answer:

Post navigation. The technical excellence of separation achieved in a mineral concentration process, or any other process where two constituents of any kind are physically separated from each other, is expressed uniquely and quantitatively by the Separation Efficiency: Es = (R – Rg)

Explanation:

hope it helps.

All of the given are sources of particulate matter except road construction.

Since, Both option (a) combustion of biofuels and option (b) incomplete natural gas combustion are sources of particulate matter, as they both release small particles into the air that can be harmful to human health and the environment.

However, road construction does not typically involve the release of particulate matter into the environment.

Hence, Based on the information you provided, the answer would be option (c) road construction.

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Note that there are key terms or issues or principles that are related to the use of Big Data and Artificial intelligence as regards the Internet of Things. They are:

The following are some particular professional ethical standards connected to big data, artificial intelligence, and the Internet of Things:

Personal data must be gathered, kept, and utilized in a manner that respects an individual's right to privacy. Transparency is being open and transparent about how data is acquired, kept, and utilized, as well as providing individuals with control over their data. Recognizing and preventing bias in the data, algorithms, and decision-making processes utilized in AI and IoT applications.

Ensuring the safety and security of AI and IoT systems, as well as preventing illegal access to sensitive data.

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Answer:

The weight will be \(\frac{1}{4}\) of its weight on earth surface. A further explanation is provided below.

Explanation:

According to the question,

h = R

The value of gravitational acceleration at height equivalent to radius of earth R.

⇒ \(g=\frac{g_0}{(1+\frac{h}{R} )^2}\)

or,

⇒ \(g=\frac{g_0}{(1+\frac{R}{R} )^2} =\frac{g_0}{4}\)

here,

\(g_0\) = gravitational acceleration earth's surface

then,

⇒ \(mg=\frac{mg_0}{4}\)

Thus, the above is the appropriate solution.

Answer:

a) The ductility = -30.12%

the negative sign means reduction

Therefore, there is 30.12% reduction

b) the true stress at fracture is 658.26 Mpa

Explanation:

Given that;

Original diameter \(d_{o}\) = 12.8 mm

Final diameter \(d_{f}\) = 10.7

Engineering stress  \(\alpha _{E}\) = 460 Mpa

a) determine The ductility in terms of percent reduction in area;

Ai = π/4(\(d_{o}\) )²  ; Ag = π/4(\(d_{f}\) )²

% = π/4 [ ( (\(d_{f}\) )² - (\(d_{o}\) )²) / ( π/4  (\(d_{o}\) )²) ]

= ( (\(d_{f}\) )² - (\(d_{o}\) )²) / (\(d_{o}\) )² × 100

we substitute

= [( (10.7)² - (12.8)²) / (12.8)² ] × 100

= [(114.49 - 163.84) / 163.84 ] × 100

= - 0.3012 × 100

= -30.12%

the negative sign means reduction

Therefore, there is 30.12% reduction

b) The true stress at fracture;

True stress  \(\alpha _{T}\) = \(\alpha _{E}\) ( 1 +  \(E_{E}\) )

\(E_{E}\)  is engineering strain

\(E_{E}\)  = dL / Lo

= (do² - df²) / df² = (12.8² - 10.7²) / 10.7² = (163.84 - 114.49) / 114.49

= 49.35 / 114.49  

\(E_{E}\) = 0.431

so we substitute the value of \(E_{E}\)  into our initial equation;

True stress  \(\alpha _{T}\) = 460 ( 1 +  0.431)

True stress  \(\alpha _{T}\) = 460 (1.431)

True stress  \(\alpha _{T}\) = 658.26 Mpa

Therefore, the true stress at fracture is 658.26 Mpa

Answer:

  Conductor

Explanation:

Current is carried by a conductor.

__

The purpose of a dielectric and/or insulator is to prevent current flow. An electrostatic field may set up the conditions for current flow, but it carries no current itself.

Cabin upholstery materials installed in current standard category airplanes must be at least flame resistant

Cabin upholstery in standard airplanes must meet safety requirements. Requirements may include fire resistance, durability, maintenance, and toxicity.

Common cabin upholstery materials in standard airplanes must be flame-resistant to minimize fire risks and provide passengers more evacuation time. Fire-resistant fabrics are commonly used with coatings or made from materials like wool or aramid fibers. Synthetic leather is a durable and low-maintenance option for airplane upholstery.

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Answer:

Explanation:

Like requested the following function is written in JavaScript and prompts the user for a total amount of Kenyan Currency that needs to be converted. It then places that value in a variable and divides it by 115 Ksh so that it gives us the USD value of that currency. Then that value is returned. The function can be attached to any button but it must be done manually when creating the button's onClick method.

function convertCurrency() {

 var KenyanAmount = prompt("Please enter the amount of Kenyan you want to convert.");

 var usdValue = "$" + (KenyanAmount / 115);

 return usdValue;

}

The program is a sequential program, and does not require loops and conditional statements

The function in JavaScript where comments are used to explain each line is as follows:

//This defines the function

function convertCurrency() {

//This gets input for the amount to convert

var Amount = prompt("Kenyan Shillings: ");

//This converts the Kenyan Shillings to US Dollars

var usdValue = KenyanAmount / 115;

//This returns the converted amount to the main method

return usdValue;

}

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We can see here that the maximum value of rolling resistance over which a loaded scraper can maintain is: 780 lb/ton

Rolling resistance is the force that resists the motion of a rolling object on a surface. Maximum rolling resistance refers to the highest level of resistance that an object can encounter while rolling on a particular surface.

For a fully loaded condition:

The total resistance = (gross + rolling) resistance

52% = 0% - rolling resistance

rolling resistance = 52%

The maximum rolling resistance = rolling resistance percentage × speed

The maximum rolling resistance = 52% (15 lb/ton)/(1% resistance)

The maximum rolling resistance = 780 lb/ton

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