A horizontal curve on a two-lane highway (12-ft lanes) has PC at station 123 80 and PT at station 129 + 00. The central angle is 35 degrees, the superelevation is 0.08 and 20.6 feet is cleared (for sight distance) from the inside edge of the innermost lane.


Required:

Determine a maximum safe speed (assuming current design standards to the nearest 5 mi/hr.

Answer:

c

Explanation:

I live in britian

There are 200 rooms in the Pinkerton Hotel which has an occupancy rate of 97% during busy season and 62% during the rest of the year.

Proportion refers to comparison between two numbers. The numbers can represent a comparison between things or people.

We can make the hotel Y

The Y Hotel has an occupancy rate of 97% during busy season(30% of the year) and 62% during the rest of the year(70%), hence the mean occupancy rate is of:

Y

= 0.3 x 97% + 0.62 x 70%

= 72.5%

The total profit for the Pinkerton Hotel was $4,468,000 hence considering that it makes $80 per room per night, in a 365-day year:

= 80N x 0.725 x 365

= 4,468,000

= 4,468,000/(80 x 0.725 x 365)

= 211

Hence, it is found that there are 200 rooms in the Pinkerton Hotel.

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Answer:

400

Explanation:

(0.97) X x X 80 X (0.3 X 365)] + [(0.62) X x X 80 X (0.7 X 365)] = 4000000 + 4468000

Solve for x

x = 400

An 802.11 frame contains a number of fields. frame control field describes the version of 802.11 that is being used.

Information is conveyed as a byte torrent across a moment in time interconnect called a frame among two or more devices. Upon reaching a significant frame, a package is split into a shorter person.

There are several specializations inside the framing modulation process that are used to characterize the frames and execution. These comprise the 802.11 version that is used by the person and is being processed in the input.  

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195.96 degrees C and  -59.35 kW is the temperature of the steam after the flashing process and the power output from the turbine if the pressure of the steam at the exit of the flash chamber is 1 MPa.

To solve this problem, we need to apply the energy balance and the steam table.

First, we need to determine the state of the geothermal water before the flashing process. Since it enters the flash chamber as a saturated liquid, we can use the steam table to find its properties at the given temperature of 230 degrees C:

h1 = hf + x * hfg = 834.46 kJ/kg (from the steam table)

where h1 is the enthalpy of the geothermal water, hf is the enthalpy of the saturated liquid at 230 degrees C, hfg is the enthalpy of vaporization at 230 degrees C, and x is the quality of the water (which is 0 since it is a saturated liquid).

Next, we need to find the state of the steam after the flashing process. We know that the pressure at the exit of the flash chamber is 1 MPa, and we can assume that the process is adiabatic (no heat transfer). Using the steam table, we can find the enthalpy and quality of the steam at this pressure:

hf = 191.81 kJ/kg (from the steam table)

hfg = 1984.4 kJ/kg (from the steam table)

hg = hf + hfg = 2176.21 kJ/kg

x = (h1 - hf) / hfg = 0.314

where hg is the enthalpy of the saturated vapor at 1 MPa.

Therefore, the temperature of the steam after the flashing process can be found by interpolation:

Tg = 230 + x * (Tsat(1 MPa) - 230) = 230 + 0.314 * (184.97 - 230) = 195.96 degrees C

where Tsat(1 MPa) is the saturation temperature at 1 MPa (from the steam table).

Finally, we can use the steam table again to find the enthalpy of the steam at the exit of the turbine:

hf = 96.83 kJ/kg (from the steam table)

hfg = 2434.4 kJ/kg (from the steam table)

hg = hf + x * hfg = 835.63 kJ/kg

where x is the quality of the steam, which is given as 5%.

Therefore, the power output from the turbine can be calculated as:

P = m * (h1 - hg) = 50 * (834.46 - 835.63) = -59.35 kW

The negative sign indicates that the turbine is consuming power instead of generating power. This is because the quality of the steam at the exit of the turbine is only 95%, which means that there is some moisture content that needs to be removed. To improve the power output, we can use a moisture separator or a reheater to increase the quality of the steam.

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Correct question:

In a single-flash geothermal power plant, geothermal water enters the flash chamber (a throttling valve) at 230 dgrees C as a saturated liquid at a rate of 50 kg/s. The steam resulting from the flashing process enters a turbine and leaves at 20 kPa with a moisture content of 5%. Determine the temperature of the steam after the flashing process and the power output from the turbine if the pressure of the steam at the exit of the flash chamber is 1 MPa.

This question is incomplete, the complete question is;

For a steel alloy it has been determined that a carburizing heat treatment of 11.3 h duration at Temperature T1 will raise the carbon concentration to 0.44 wt% at a point 1.8 mm from the surface. A separate experiment is performed at T2 that doubles the diffusion coefficient for carbon in steel.

Estimate the time necessary to achieve the same concentration at a 4.9 mm position for an identical steel and at the same carburizing temperature T2.

Answer:

the required time to achieve the same concentration at a 4.9 is 83.733 hrs

Explanation:

Given the data in the question;

treatment time t₁ = 11.3 hours

Carbon concentration = 0.444 wt%

thickness at surface x₁ = 1.8 mm = 0.0018 m

thickness at identical steel x₂ = 4.9 mm = 0.0049 m

Now, Using Fick's second law inform of diffusion

\(x^2\) / Dt = constant

where D is constant

then

\(x^2\) / t = constant

\(x^2_1\) / t₁ = \(x^2_2\) / t₂

\(x^2_1\) t₂ = t₁\(x^2_2\)

t₂ = t₁\(x^2_2\) / \(x^2_1\)

t₂ = (\(x^2_2\) / \(x^2_1\))t₁

t₂ = \((\) \(x_2\) / \(x_1\) \()^2\) × t₁

so we substitute

t₂ = \((\) 0.0049  / 0.0018  \()^2\) × 11.3 hrs

t₂ = 7.41 × 11.3 hrs

t₂ = 83.733 hrs

Therefore, the required time to achieve the same concentration at a 4.9 is 83.733 hrs

Both Tech A and Tech B are correct in their statements, but they are referring to different components of a vehicle's drivetrain.

Tech A is referring to axles that do not deliver power to the wheels. In non-driven wheels of vehicles, such as the front wheels of a rear-wheel drive vehicle or the rear wheels of a front-wheel drive vehicle, dead axles are frequent. These axles are intended to sustain the vehicle's weight and allow the wheels to revolve freely, but they do not contribute to the vehicle's forward motion.

Tech B is referring to the ring gear and pinion gear, both of which are components of the final drive assembly. The ring gear and pinion gear are parts of the differential, which transmits torque from the driveshaft to the wheels. The final drive assembly is made up of gears that provide the gear reduction and torque multiplication required to deliver power from the gearbox to the wheels.

Therefore, both statements are accurate, but they pertain to different components of the vehicle's drivetrain.

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The thickness of the boundary layer will be 0.436m. Distance downstream of the leading edge where this Reynolds number occur will be 3.08mm. The shear stress on the plate on this point is 1.055 N/m².

Laminar or turbulent fluid flow is identified using the Reynolds number, abbreviated as Re. In all viscous flows, where a numerical model is chosen in accordance with pre-calculated Reynolds number, it is one of the primary regulating parameters.

Given, Reynolds number, Re = 500000

  length = 0.7 m

  width = 1.5m

   velocity, u = 1.5 m/s

the thickness of the boundary layer, Re = u×x/v

                                                            x = Re × v/u

                                                             x = 500000×1.31×10∧(-6)/1.5

                                                             x = 0.436m

distance downstream of the leading edge where this Reynolds number occur, δ = 5x/\(\sqrt{Re}\)

          δ = 5×0.436/√500000

          δ = 3.08 mm

The shear stress on the plate on this point,

τ = 0.332v(u/x)×√Re

τ = 0.332×1.31×10∧(-3) (1.5/0.436) √500000

τ = 1.055 N/m²

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The complete question is,

A thin plate 0.7 m long and 1.5 m wide is submerged and held stationary in a stream of water (T = 10°C) that has a velocity of 1.5 m/s. What is the thickness of the boundary layer on the plate for Re, 500,000 (assume the boundary layer is still laminar), and at what distance downstream of the leading edge does this Reynolds number occur? What is the shear stress on the plate on this point?

Using the knowledge of computational language in python it is possible to write a code that There are several books placed in the HackerStudy library.

include<iostream>

using namespace std;

long getMaximumScore(int arr[],int k,int n)

{

long count=0,sum=0;

for(int i=0;i<n-1;i++)

{

 for(int j=0;j<n-i-1;j++)

 {

  if(arr[j+1]>arr[j])

  {

   arr[j+1]=arr[j+1]+arr[j];

   arr[j]=arr[j+1]-arr[j];

   arr[j+1]=arr[j+1]-arr[j];

  }

 }

}

for(int i=0;i<n;i++)

{

 if(count==k)

 return sum;

 else

 {

  sum=sum+arr[i];

  count++;

 }

}

}

int main()

{

int n,k;

cin>>n;

int arr[n];

for(k=0;k<n;k++)

cin>>arr[k]  ;

cin>>k;

cout<<getMaximumScore(arr,k,n);

return 0;

}

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To determine the maximum absolute values of the shear and bending moment for problem 07.042.c, we would need to analyze the shear and moment diagrams for the given beam. Once we have these diagrams, we can identify the points where the shear and moment are at their maximum or minimum values.

The max shear would occur at the point where the shear diagram crosses the x-axis, which is usually at the supports or where there are concentrated loads. To find the absolute value of the max shear, we would need to take the magnitude of the shear at this point.

Similarly, the max bending moment would occur where the moment diagram crosses the x-axis. To find the absolute value of the max bending moment, we would need to take the magnitude of the moment at this point.

So, to solve problem 07.042.c, we would need to first draw the shear and moment diagrams for the given beam. Once we have these diagrams, we can identify the points where the shear and moment are at their maximum or minimum values and calculate the absolute values accordingly.

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Answer:

c. the U.S. Constitution.

Explanation:

A Constitution refers to a set of written laws and principles which is typically used to determine the power and authority of the government, as well as guarantee the fundamental rights of its citizens.

Basically, the Constitution accords powers to the national or federal government and these includes; enumerated or delegated, reflected, and concurrent powers. Therefore, base on the US Constitution, any law, act, or license issued and approved by the federal government supercedes or overrides any state law.

In this scenario, NatGas Corporation obtains a federal license to operate a gas pipeline through a certain area of Oregon. The Oregon state legislature enacts a law that bans gas pipelines in that area. Most likely, the state law violates the U.S. Constitution because a federal law is supreme.

Answer:

sry but it's kinda hard

Answer:

F=200kN

Explanation:

As the angle of the ramp is increased, the force parallel increases. Hence, option (a) can be considered as the correct answer.

When the angle of a ramp is increased, the force parallel to the ramp, also known as the parallel component of the gravitational force, does increase. This is because the component of gravity acting parallel to the ramp increases with the angle. However, it's important to note that the total gravitational force acting on an object remains constant regardless of the angle of the ramp.As the angle of the ramp increases, the force required to push or pull an object up the ramp against gravity increases. This is due to the increase in the vertical component of the gravitational force, which opposes the motion up the ramp. The parallel force required to overcome this increased vertical force also increases.

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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.

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.

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Answer:

pBR322 DNA is used in plasmid cloing vector in E.coli

molecule is a double-stranded circle 4,361 base pairs in lenght

pBR322 contains the genes for resistance to ampicillin and tetracycline, can be amplified with chloramphenicol

molecular weight is 2.38 x \(10^{6}\) daltons

Explanation:

Answer:

b

Explanation:

Answer:

b

Explanation:

Answer:

B) reaming | yes it is B) reaming

The impact of age on the tin in the fusible plug is that it can cause the tin to become brittle and lose its ability to function effectively.

Fusible plugs are safety devices installed in boilers to prevent excessive pressure buildup. They contain a core made of tin or an alloy with a low melting point. Over time, the tin can deteriorate due to aging and exposure to high temperatures. As the tin ages, it may lose its ability to melt and release pressure at the desired temperature.

This can compromise the safety of the boiler system, as the fusible plug may not function as intended during an overpressure event. Regular inspection and replacement of fusible plugs are necessary to ensure their reliability and effectiveness in maintaining boiler safety.

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To plot the data as strain versus time, you'll need to have the creep data for different time intervals. Since you haven't provided the data, I'll explain the process using general steps:

1. Gather the creep data for different time intervals at 400°C and a stress of 25 MPa.2. Create a table with two columns: one for time (in minutes or hours) and the other for strain.3. Plot the data points on a graph with time on the x-axis and strain on the y-axis. Connect the data points with a line.4. Identify the steady-state or minimum creep rate. This is the rate at which the strain changes over time once it reaches a constant value.
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a) Here, VL = 9v, IL = 50mA, Ir = 50mA for the network of RL= 180 ohms.

b) If RL = 470 ohms, then VL = 10v, IL = 21.276mA, Ir = 45.45mA

c) The value of RL that will establish maximum power conditions for the            Zener diode, R\(_{L_{(max)}}\) = 1.83 kΩ

d) The minimum value of RL to ensure that the Zener diode is in the "on" state R\(_{L_{(min)}}\) = 220 Ω

A Zener diode is a particular kind of diode made to consistently permit current to flow "backwards" (with inverted polarity) when a specific reverse voltage, called the Zener voltage, is reached.

A wide range of Zener voltages, some of which are even variable, are used in the manufacture of Zener diodes. The reverse conduction occurs in some Zener diodes with sharp,  highly dopped p - n junctions and low Zener voltages; in these cases, the Zener effect, named after Clarence Zener, is caused by electron quantum tunneling in the small gap between the p and n regions.

Avalanche breakdown also occurs during the operation of diodes with higher Zener voltages, which have a more gradual junction.

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Answer:

D) AND gate.

Explanation:

Given that:

A certain printer requires that all of the following conditions be satisfied before it will send a HIGH to la microprocessor acknowledging that it is ready to print

These conditions are:

1. The printer's electronic circuits must be energized.

2. Paper must be loaded and ready to advance.

3. The printer must be "on line" with the microprocessor.

Now; if these conditions are met  the logic gate produces a HIGH output indicating readiness to print.

The objective here is to determine the basic logic gate used in this circuit.

Now;

For NOR gate;

NOR gate gives HIGH only when all the inputs are low. but the question states it that "a HIGH is generated and applied to a 3-input logic gate". This already falsify NOR gate to be the right answer.

For NOT gate.

NOT gate operates with only one input and one output device but here; we are dealing with 3-input logic gate.

Similarly, OR gate gives output as a high if any one of the input signals is high but we need "a HIGH that is generated and applied to a 3-input logic gate".

Finally, AND gate output is HIGH only when all the input signal is HIGH and vice versa, i.e AND gate output is LOW only when all the input signal is LOW. So AND gate satisfies the given criteria that; all the three conditions must be true for the final signal to be HIGH.

Answer:

They are configured this way to avoid overlap issues.

Explanation:

Answer:

  C.  3325 Ω - 3675 Ω

Explanation:

5% of 3500 Ω is ...

  0.05 × 3500 = 175

The lower limit is this amount less than the nominal value:

  3500 -175 = 3325

The upper limit is the nominal value plus the tolerance:

  3500 +175 = 3675

The lower and upper limits are 3325 Ω and 3675 Ω, respectively.

The tatal resistance of the series-parallel circuit with two resistor connected in parallel which combination is connected in series to a single resistor is 9 ohms.

This can be defined as the opposition to current flow in a circuit.

To calculate the total resistance, first we need to find the total resistance of the parallel resistor.

For parallel,

Where:

R' = Total resistance of the parallel resistor.

From the question,

Given:

Substitute these values into equation 1

Finally, we combine the effective parallel resistance in series to the single resistance to the the total resistance of the circuit.

Where:

From the question,

Substitute these values into equation 2

Hence, the total resistance of the circuit is 9 ohms.

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This question is incomplete, the complete question is;

An air-standard Carnot cycle is executed in a closed system between the temperature limits of 350 and 1200 K. The pressures before and after the isothermal compression are 150 and 300 kPa, respectively. If the net work output per cycle is 0.5 kJ, determine (a) the maximum pressure in the cycle, (b) the heat transfer to air, and (c) the mass of air. Assume variable specific heats for air.

Answer:

a) the maximum pressure in the cycle is 30.01 Mpa

b) the heat transfer to air is 0.7058 KJ

c) mass of Air is 0.002957 kg

Explanation:

Given the data in the question;

We find the relative pressure of air at 1200 K (T1) and 350 K ( T4)

so from the "ideal gas properties of air table"

Pr1 = 238

Pr4 = 2.379

we know that Pressure P1 is only maximum at the beginning of the expansion process,

so

now we express the relative pressure and pressure relation for the process 4-1

P1 = (Pr2/Pr4)P4

so we substitute

P1 = (238/2.379)300 kPa

P1 = 30012.6 kPa = 30.01 Mpa

Therefore the maximum pressure in the cycle is 30.01 Mpa

b)

the Thermal heat efficiency of the Carnot cycle is expressed as;

ηth = 1 - (TL/TH)

we substitute

ηth = 1 - (350K/1200K)

ηth = 1 - 0.2916

ηth = 0.7084

now we find the heat transferred

Qin = W_net.out / ηth

given that the net work output per cycle is 0.5 kJ

we substitute

Qin = 0.5 / 0.7084

Qin = 0.7058 KJ

Therefore, the heat transfer to air is 0.7058 KJ

c)

first lets express the change in entropy for process 3 - 4

S4 - S3 = (S°4 - S°3) - R.In(P4/P3)

S4 - S3 = - (0.287 kJ/Kg.K) In(300/150)kPa

= -0.1989 Kj/Kg.K = S1 - S2

so that; S2 - S1 = 0.1989 Kj/Kg.K

Next we find the net work output per unit mass for the Carnot cycle

W"_netout = (S2 - S1)(TH - TL)

we substitute

W"_netout = ( 0.1989 Kj/Kg.K )( 1200 - 350)K

= 169.065 kJ/kg

Finally we find the mass

mass m = W_ net.out /  W"_netout

we substitute

m = 0.5 / 169.065

m = 0.002957 kg

Therefore, mass of Air is 0.002957 kg

Answer:

u do the same thing as part B but only add 100 k, I think, cuz I'm still in middle school but I mean if u see it asks u to do the same thing as B but C says that instead, u do it at half pressure and 100 k is higher temp so what its asking is to repeat b but the twist is u do it at half pressure and 100 k is the higher temp

hope this helps :)  

while viewing a site plan, you notice that the contour lines have elevation numbers that increase toward the middle. this would indicate a hill

On your map, contour lines indicate the height above sea level at various locations. On a map, the relief depicts the elevational difference between two places. You may calculate the relief or elevation change between two points by removing the elevation differences between them.

On a topographic map, a contour line is a line drawn to denote a dip or elevation of the ground. The vertical separation or elevation difference between contour lines is known as a contour interval. Every fifth contour line has an index contour, which is a bolder or thicker line.

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Answer:

E = 8.83 kips

Explanation:

First, we determine the stress on the rod:

\(\sigma = \frac{F}{A}\\\\\)

where,

σ = stress = ?

F = Force Applied = 1300 lb

A = Cross-sectional Area of rod = 0.5\(\pi \frac{d^2}{4} = \pi \frac{(0.5\ in)^2}{4} = 0.1963\ in^2\)

Therefore,

\(\sigma = \frac{1300\ lb}{0.1963\ in^2} \\\\\sigma = 6.62\ kips\)

Now, we determine the strain:

\(strain = \epsilon = \frac{elongation}{original\ length} \\\\\epsilon = \frac{0.009\ in}{12\ in}\\\\\epsilon = 7.5\ x\ 10^{-4}\)

Now, the modulus of elasticity (E) is given as:

\(E = \frac{\sigma}{\epsilon}\\\\E = \frac{6.62\ kips}{7.5\ x\ 10^{-4}}\)

E = 8.83 kips

5.The "double-truck live load model" is employed for the purpose of determining the maximum load that a bridge or structure can sustain. It is a method used in structural engineering to analyze the stress and deflection caused by the passage of a double-truck vehicle on a bridge.

By considering the weight distribution, axle spacing, and dynamic effects of the double-truck vehicle, engineers can assess the structural integrity and ensure that the bridge or structure is designed to withstand the anticipated loads and remain safe for public use.

6.The dynamic impact factor is employed in the live load model to account for the additional dynamic effects that occur when a moving load traverses a structure.

As a vehicle or load moves across a bridge or structure, it causes dynamic vibrations and oscillations due to its motion and interaction with the structure.

The dynamic impact factor takes into consideration these dynamic effects and amplifies the live load to ensure the structural design can withstand the combined static and dynamic loads imposed by moving vehicles or loads.

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