22 (25 pts.) Given the difference equation 3 Using z-transform methods determine the closed form solution y(k) fork - 0.1.2.. where u(k) = discrete time unit step function and the initial conditions are y(0) 1 and y1) ** >(x + 2) - Y+ + 1) + 3(k) = (

Answer:

eye protection safety gloves and rubber shoes and a safe ground

Explanation:

Answer:

(a) L ≈ 0.397 H

(b) Z ≈ 52.5 kOhm

(c) θ ≈ 0.025 radians

Step-by-step explanation:

To calculate the values for an RL low pass filter with a cut-off frequency of 4 kHz and using an R-value of 10 kOhm, we can use the following formulas:

(a) L = R / (2 * π * f_c)

(b) Z = √(R^2 + (2 * π * f)^2)

(c) θ = atan((2 * π * f) / R)

Given:

R = 10 kOhm

f = 25 kHz

f_c = 4 kHz

(a) L = R / (2 * π * f_c)

L = 10 kOhm / (2 * π * 4 kHz)

L ≈ 0.397 H

(b) Z = √(R^2 + (2 * π * f)^2)

Z = √((10 kOhm)^2 + (2 * π * 25 kHz)^2)

Z ≈ 52.5 kOhm

(c) θ = atan((2 * π * f) / R)

θ = atan((2 * π * 25 kHz) / 10 kOhm)

θ ≈ 0.025 radians

Therefore, the calculated values are:

(a) L ≈ 0.397 H

(b) Z ≈ 52.5 kOhm

(c) θ ≈ 0.025 radians

The calculation for the number of pistons required to lift in PLTW POE depends on specific design factors and cannot be determined without more information.

To calculate the number of pistons required to lift in PLTW POE (Project Lead The Way Principles of Engineering), you would need specific information about the system design, including factors such as the weight to be lifted, desired lifting capacity, force requirements, and mechanical advantage.

The calculation would involve considering the forces involved, the efficiency of the system, and any additional factors such as safety margins or load distribution.

Without more specific information about the system and its requirements, it is not possible to provide a generic calculation for the number of pistons required.

It is recommended to refer to the PLTW POE curriculum or consult the project guidelines and resources provided by your instructor or educational institution for specific calculations and guidance on determining the number of pistons required for lifting in a given scenario.

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True is the answer.....

Answer:

Hence the magnitude of the pure moment m will be \(2\times 10^5.\)

Explanation:

Now,

We know that,

\(\frac{M}{I} = \frac{E}{R}\)

Thus, \(M =\frac{EI}{R}\)

Here

R = 10000 mm  

\(I=\frac{1}{12}\times 120\times 10^{3}\\= 10^{4} mm^{4}\)

\(E=2\times 10^{5}n/mm^{2}\\\\E=2\times 10^{5}n/mm^{2}\\\\M={(2\times 10^{5}\times 10^{4})/{10000}}\\\\M=2\times 10^{5}\)

Hence, the magnitude of the pure moment m will be \(2\times 10^5.\)

Answer:verify proper cable is hooked between laptop and projector. HDMI ports or 15 pin video output to input.

And laptop is selected to output to respective video output.

Explanation:

Answer:

The main reason for bridges collapses is: earthquakes (natural disasters) and construction incidents. Whenever a natural disaster occur, it makes the bridge collapse. An example is hurricanes. Hurricanes come with a great wind and that might lead to the bridge collapsing. Construction incidents means the bridge falls during construction. Those who are employed in health, safety and environmental management need to make sure that during the construction, they have examined the material and made sure it is strong. Working with economists, they should seek better understanding of the methods for minimizing the costs during the life of the bridge. In case for natural disasters, like flooding, they should make the bridge in a lever where the water won't reach the bridge. And they should have a limit for weight in the bridges because that is another reason it collapses, because the bridge does not support extra weight.

Explanation:

hope this helps

Answer:

in the previous sections you have seen that any real number have been the symbol of expenses have asked to represent it on the number line literacy house suppose you want to locate on the number line we know that this line is between two entry so let us look closely at the portions of the number line between between 2 to 25 by 50 bye-bye 2.00 with this into 5

False.

Springs and shock absorbers are not part of the steering system. The steering system is responsible for directing the wheels of the vehicle in the desired direction, while the suspension system, which includes springs and shock absorbers, is responsible for providing a smooth ride and maintaining proper contact between the tires and the road.

The suspension system's springs absorb energy from road irregularities and help to keep the vehicle's tires in contact with the road, providing a smooth ride for the driver and passengers. Shock absorbers, also known as dampers, work in conjunction with the springs to control the motion of the suspension and dampen any oscillations caused by road irregularities. While the suspension system is not directly part of the steering system, it does play a crucial role in the vehicle's overall handling and performance.

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125 mph is the wind speed threshold for damage to asphalt shingle roofs with the current Miami-Dade compliant installation.

Wind speed, along with wind direction and wind gusts, is one of three primary aspects of air movement. It will assist you in better forecasting weather and using wind appropriately for activities that would be difficult to do without this weather phenomenon.

An anemometer is a classic and most often used equipment or device for measuring wind speed (and direction). It is made up of three or four cups and a vertical pillar. These cups record the movement of air flows, which allows us to calculate wind speed. However, this is not the only sort of wind measurement tool available.

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Answer:

Mass, in physics, quantitative measure of inertia, a fundamental property of all matter.

Explanation:

Mass is the matter that makes up objects

A 1500 kg crate is pulled along the ground with a constant speed of a distance for 25m , using a cable that makes a horizontal angle of 15 ° . Determine the tension in the cable . The coefficient of kinetic friction between the ground and the crate is H4 = 0.55

Answer: s = 1.05 ft

Answer:

gdyc ddxtfvytg4dgtfxdwcftcd3rcby

If the crankshaft end play is out of specifications, check for:

Thrust Bearings

Main Bearings

Crankshaft

Crankshaft Thrust Washers

Engine Block

To understand the crankshaft when it is out of specifications, check for:

Thrust Bearings: Check the condition of the thrust bearings, which are located at the front and/or rear of the engine block. Excessive wear or damage to the thrust bearings can contribute to increased crankshaft end play.

Main Bearings: Inspect the main bearings, which support the crankshaft within the engine block. Worn or damaged main bearings can cause excessive movement of the crankshaft.

Crankshaft: Check the crankshaft itself for any signs of damage, such as scoring or bending. A damaged crankshaft may not sit properly within the bearings, leading to increased end play.

Crankshaft Thrust Washers: Some engines use thrust washers to control the end play of the crankshaft. Inspect these washers for wear, damage, or improper installation.

Engine Block: Check the engine block for any signs of damage or distortion that may affect the alignment and support of the crankshaft.

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A caisson is a watertight enclosure that can be pumped dry so that construction activities, such as the construction of piers can take place. A caisson is a watertight structure or chamber, usually made of wood, metal, or concrete, that is sunk to the bed of a river, lake, or ocean to provide a foundation or support for a bridge, building, or other structure.

A caisson is constructed onshore and then floated to the location where it is to be sunk into the water. Once in place, water is pumped out of the caisson, and construction workers enter the dry chamber to begin work on the foundation or support structure. The use of caissons has been an important development in the construction of bridges and other structures in areas with deep water or unstable soils.

A foundation called a caisson is used in construction on soft or deep water. It involves filling a series of large, watertight cylinders with concrete and sinking them into the ground. The base serves as a solid foundation for any subsequent structures. The construction of large structures like bridges, docks, and caissons is common.

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Answer:

do the wam wam

Explanation:

Answer:

Expansion joints are installed to accommodate the thermal expansion and contraction of materials, as well as other types of movement in buildings and structures. They help prevent excessive stress, cracking, and damage, ensuring the structural integrity and longevity of the construction.

Explanation:

Expansion joints are necessary for several reasons:

a) Thermal Expansion and Contraction: When materials are exposed to temperature changes, they expand when heated and contract when cooled. Without expansion joints, this thermal movement can exert significant stress on the structure, leading to cracks, distortion, or failure. Expansion joints allow for the controlled expansion and contraction of materials, accommodating these movements without causing damage.

b) Structural Movement: Buildings and structures can experience various types of movement, such as settlement, seismic activity, wind loads, or vibrations. Expansion joints provide flexibility, allowing the structure to adapt and move without constraints. By incorporating expansion joints, the stress and strain resulting from these movements are distributed and controlled, reducing the risk of structural damage.

c) Stress Relief: Expansion joints help relieve stress concentrations that may arise due to the rigidity or stiffness of building materials. By introducing a flexible joint, the stress is dispersed over a larger area, preventing localized high-stress points that could lead to structural failure.

d) Seismic and Wind Load Resilience: In areas prone to earthquakes or high wind loads, expansion joints play a crucial role in absorbing the energy and movement caused by these external forces. They help mitigate the impact on the structure, reducing the risk of damage and ensuring its resilience.

e) Maintenance and Accessibility: Installing expansion joints provides easier access to specific areas of the structure for maintenance, repairs, or replacements. It simplifies the process of inspecting or working on utilities, systems, or building components, improving overall maintenance efficiency.

In summary, installing expansion joints is essential to accommodate thermal expansion, control structural movements, relieve stress, enhance resilience to external forces, and facilitate maintenance and repairs. By allowing controlled movement and preventing excessive stress, expansion joints help ensure the longevity, safety, and functionality of buildings and structures.

Answer:

(a) The ball's initial speed is 8.4 m/s

(b) The height of the ball  is 3.28 m

Explanation:

Given;

maximum height of the ball, H = 3.6 m

Apply conservation of energy;

¹/₂mu² + mgh = ¹/₂mv² + mgH

Where;

m is the mass of the ball

u is the initial velocity of the ball

v is the final velocity of the ball

h is the initial height of the ball

H is the maximum height of the ball

(a) The ball's initial speed, u;

¹/₂mu² + mgh = ¹/₂mv² + mgH

¹/₂u² + gh = ¹/₂v² + gH

make u the subject of the formula

\(u = \sqrt{v^2 +2gH -2gh} \\\\\)

at maximum height, the final velocity  = 0

maximum height H = 3.6 m

initial height, h = 0

g is acceleration due to gravity = 9.8 m/s²

\(u = \sqrt{0^2 +2*9.8*3.6 -2*9.8*0} \\\\u = \sqrt{2*9.8*3.6} \\\\u = 8.4 \ m/s\)

(b) The height of the ball when it has a speed of 2.5 m/s

v = 2.5 m/s

\(u = \sqrt{v^2 +2gH -2gh} \\\\u^2 = v^2 +2gH -2gh \ (h = 0)\\\\u^2 = v^2 +2gH\\\\2gH = u^2 - v_2\\\\H = \frac{u^2 - v^2}{2g} \\\\H = \frac{8.4^2 - 2.5^2}{2*9.8}\\\\H = 3.28 \ m\)

A) The ball's initial speed is : 8.4 m/s

B) The height of the ball when it has a speed of 2.5 m/s is : 3.28 m

Given data :

Maximum height reached by ball = 3.60 m

applying conservation of energy relation

¹/₂mu² + mgh = ¹/₂mv² + mgH -------- ( 1 )

where : u = initial velocity , v = final velocity , H = max height , h = initial height

Given that the value of m is not given equation ( 1 ) becomes

¹/₂u² + gh = ¹/₂v² + gH  --- ( 2 )

solve for u ( initial velocity )

u = \(\sqrt{v^2 +2gH -2gh}\)   ----- ( 3 )

where : g = 9.8 m/s², v = 0 , H = 3.60 m , h = 0

insert values into equation ( 3 )

u ( initial speed of ball ) = 8.4 m/s

applying equation ( 3 )

u = \(\sqrt{v^2 +2gH -2gh}\)

where : u = 8.4 m/s , v = 2.5 m/s ,  H = ? , h = 0

solve for H

H = u² - v² / 2g

   = ( 8.4² - 2.5² ) / ( 2 * 9.8 )

   = 3.28 m

Hence we can conclude that The ball's initial speed is : 8.4 m/s and The height of the ball when it has a speed of 2.5 m/s is : 3.28 m.

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The van’t Hoff factor is a measure of the degree of dissociation of a solute in a solution.

Dissociation is a mental process in which a person disconnects from their thoughts, feelings, memories, or sense of identity. It is a coping mechanism that helps people to distance themselves from a traumatic event or a situation that may be too emotionally overwhelming.

The theoretical value of the van’t Hoff factor is determined by the number of ions that a solute molecule breaks down into upon dissolution. For example, a solute molecule which dissociates into two ions would have a van’t Hoff factor of two. The measured value of the van’t Hoff factor can differ from the theoretical value due to a number of factors. One of the most important factors is the presence of micro-domains in the solution. Micro-domains are small pockets of solution which contain a higher concentration of the solute than the rest of the solution. These domains are typically caused by the presence of impurities or other substances that interfere with the dissociation process. As a result, the measured van’t Hoff factor is typically lower than the theoretical value. In addition, the size and shape of the solute molecules can also affect the measured van’t Hoff factor. If the solute molecules are large or complex, they may not be able to fully dissociate into the smaller ions that are necessary to reach the theoretical value of the van’t Hoff factor. This can lead to a discrepancy between the measured and theoretical values. Finally, the presence of other ions in the solution can also affect the measured van’t Hoff factor. These ions can bind to the solute molecules, thus preventing them from fully dissociating and leading to a discrepancy between the measured and theoretical values.

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When a section of land is 19.83ch x 19.09ch x 19.31ch x 20.14ch. The area of the lot is most nearly D. 37.38ac

In order to calculate the area of the lot, we need to multiply the length and width of the lot. In this case, the length is 19.83ch and the width is 19.09ch.

Therefore, the area of the lot is 19.83ch x 19.09ch

= 373.8347 square chains.

To convert square chains to acres, we divide by 10. Therefore, the area of the lot in acres is:

= 373.8347 square chains / 10

= 37.38347 acres.

The answer is D.

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Micropulse arc welding is a well-known tool for speeding up simple bench operations during the welding process like ring size, making connections near thermally sensitive gemstones, and mending porosity castings.

The practice performs effectively on gold, silver, copper, and stainless steel whether joining tiny jewelry materials or bigger pieces for miniature metal sculptures.

The welding arc temperatures typically range from 6000°C to 8000°C, which translates to about 10000F to 15000F.

This increased range of thermal heat is high enough to turn Gold and silver rings into a molten state. A molten state is a phase at which a solid element is being melted and turns into a liquid state under the influence of a high temperature.

Therefore, from the above explanation, we can conclude that it is possible and true for gold and silver rings to receive an arc and turn molten.

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The question seems to be asking for an explanation regarding a glass window with specific dimensions and properties. Let's break it down step by step.

1. Dimensions: The glass window is 1.2 meters high and 2 meters wide. These dimensions help us understand the size of the window. 2. Thickness: The thickness of the glass window is given as 6 mm. This measurement tells us how thick the glass is. 3. Thermal Conductivity: The thermal conductivity of the glass window is represented by the symbol "k." This property describes how well the glass conducts heat. A higher value of thermal conductivity means better heat conduction.

To provide a more detailed answer, we need to know what specific information you are looking for. Please provide more context or specific requirements so that I can assist you further.

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False. Optical discs store data using tiny pits and lands created by a laser, not burned. The laser beam alters the reflective properties of the disc's surface to encode the data.

Optical discs, such as CDs, DVDs, and Blu-ray discs, are created with a reflective layer and a protective layer on top. To store data on an optical disc, a laser beam is used to create microscopic pits and lands on the reflective layer. The laser focuses on specific areas of the disc, heating them to change their optical properties. The areas heated by the laser become the pits, while the unheated areas remain as lands.

When the disc is read, a laser beam is directed onto the surface, and a sensor detects the changes in reflection caused by the pits and lands. The sensor translates these changes into digital data that can be interpreted by a device, such as a CD or DVD player.

The pits and lands on an optical disc are arranged in a spiral track or concentric circles, forming a continuous sequence of data. By varying the length and spacing of the pits and lands, different patterns are created to represent the encoded data. This allows optical discs to store various types of information, including audio, video, and computer data.

Hence, optical discs use lasers to create pits and lands on a reflective surface, rather than burning the data onto the disc. This technique enables the discs to store and retrieve data accurately and reliably.

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Answer:

wat?

Explanation:

The question should be labeled in the psychology section, but what I assume the question means is some sort of paradoxical reverse psychology method of braincell loss. Even photosynthesis doesn't understand what it means. The question probably is what is the question, not that there's no help.

Hope this helps (a little)!

Panasonic MAC2400 Big Bore Compressed Air Is Best For Little Tasks At Home.

Natural gas may be moved from the manufacturing location, via the distribution chain, to the consumer thanks to mechanical equipment called compressors, which raise the gas's pressure.

Refrigerators, freezers, and air conditioning units all require air compressors to cool the air, making them the most typical household appliances to employ air compressors. For cooling and heating purposes, air compressors are a part of vehicle engines. They are also used in air brakes on larger trucks and railways.

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The moment of inertia of the pendulum about an axis perpendicular to the page and passing through G will be 1.5 kgm².

A pendulum is a weight suspended from a pivot so that it can swing freely. The motion of a pendulum is a type of simple harmonic motion, which means that the pendulum moves back and forth in a regular, periodic fashion. The moment of inertia of an object is a measure of the object's resistance to change in its rotational motion.

To determine the location of the center of mass of the pendulum, we need to find the mass of each part and the distance from the center of mass of each part to point G.

The mass of rod AB is 3 kg/m * 1 m = 3 kg

The mass of rod OC is also 3 kg/m * 1 m = 3 kg

The mass of the plate is 12 kg/m2 * 1  = 12 kg

The distance from the center of mass of rod AB to point G is 0.5 m (since the rod is 1 m long and point G is at the midpoint of the rod)

The distance from the center of mass of rod OC to point G is also 0.5 m

The distance from the center of mass of the plate to point G is 0.5 m (since the plate is 1 m wide and point G is at the midpoint of the plate)

Now we can use the formula for the location of the center of mass:

yG = (3 kg * 0.5 m + 3 kg * 0.5 m + 12 kg * 0.5 m) / (3 kg + 3 kg + 12 kg) = 0.5 m

To calculate the moment of inertia of the pendulum about an axis perpendicular to the page and passing through G, we can use the formula for the moment of inertia of a rod about its center of mass:

\(I = (1/12) * m * L^2\)

For rod AB:

\(I = (1/12) * 3 kg * (1 m)^2 = 0.25 kg*m^2\\\)

For rod OC:

\(I = (1/12) * 3 kg * (1 m)^2 = 0.25 kg*m^2\)

For the plate:

I = (1/12) * 12 kg * (1 m)^2 = 1 kg*m²

The total moment of inertia of the pendulum is the sum of the moments of inertia of the individual parts:

I = 0.25 kgm^2 + 0.25 kgm^2 + 1 kgm^2 = 1.5 kgm²

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Answer:

I have attached a digital diagram, hopefully it helps!

The aluminum atom has 13 protons and 13 electrons. Its atomic number is 13, indicating the number of protons.

The nucleus of the atom contains these protons, which have a positive charge, as well as neutrons, which have no charge. The electrons, which have a negative charge, orbit around the nucleus in energy levels or shells.

The first shell can hold up to 2 electrons, while the second and third shells can hold up to 8 electrons each. In the case of aluminum, the first two shells are filled with 2 and 8 electrons, respectively, and the third shell contains the remaining 3 electrons.

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At amateur operating frequencies, the FTDX10 is designed for 50 Ohm resistive impedance.

Impedance is the sum of resistance and reactance. It was defined as anything that can obstructs the flow of electrons within the electrical circuit. As a result, it influences current generation in the electrical circuit. It could be found in all the possible circuit components and across all possible electrical circuits. Impedance is represented mathematically by the letter Z and has the unit ohm. It's a mix of resistance and reactance.

Z stands for impedance, which is an expression of the resistance to alternating and/or direct electric current that an electronic component, circuit, or system offers. Resistance and reactance are two independent scalar (one-dimensional) phenomena that make up the vector (two-dimensional) quantity known as impedance.

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Magnitude of average acceleration  \(a_{avg}\)=2.75 units

Average acceleration \(a_{avg}=\) \(2.265 i- 1.58j\)

We're given that \(s=\frac{t^2}{4}\)

And partice is at A at t=2 s and at B at t= 2.2s

Instantaneous velocity \(\frac{ds}{dt} =\frac{t}{2}\)

Velocity at A  (\(V_{a}\)) at 2s = \(\frac{t}{2}\) or  \(\frac{t}{2}Cos \frac{\pi}{3} i+ \frac{t}{2}Sin \frac{\pi}{3}j=\frac{i+\sqrt{3} j}{2}\)

Velocity at B  (\(V_{b}\)) at 2.2s =\(\frac{t}{2}\) or \(\frac{t}{2}Cos \frac{\pi}{6} i+ \frac{t}{2}Sin \frac{\pi}{6}j=\frac{\sqrt{3}i+j }{2}\)

Average acceleration = \(\frac{V_{b}-V{a}}{t}\) =\(2.265 i- 1.58j\)

magnitude = \(\sqrt{(2.265)^2- (1.58)^2}\) = \(2.75\)

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Note that the temperature of both blocks will still be the same, only the rate at which they transfer heat to your hand will be different due to their thermal conductivity.

Assuming that both the aluminum and glass blocks have been sitting in the room for a very long time, they would have reached thermal equilibrium with the room temperature of 20°C. Therefore, both blocks would be at the same temperature as the surrounding air.

However, when you touch both blocks, they will feel different due to their thermal conductivity. Aluminum has a higher thermal conductivity than glass, meaning it can transfer heat more easily. Therefore, when you touch the aluminum block, it will feel colder to the touch because it will conduct heat away from your hand faster than the glass block.

On the other hand, the glass block will feel warmer to the touch because it will conduct heat more slowly away from your hand, allowing your hand to warm up the surface of the glass. However, it is important to note that the temperature of both blocks will still be the same, only the rate at which they transfer heat to your hand will be different due to their thermal conductivity.

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