The Stefan-Boltzmann law can be employed to estimate the rate of radiation of energy H from a surface, as in H = AeσT4 where H is in watts, A=the surface area(m2 ), e=the emissivity that characterizes the emitting properties of the surface (dimensionless), σ = a universal contact called the Stefan-Boltzmann constant (= 5.67×10−8Wm−2K−4 ), and T= absolute temperature (K). Determine the error of H for a steel plate with A = 0.15m2 , e = 0.90, and T = 650 ± 20. Compare your results with the exact error. Repeat the computation but with T = 650±40. Interpret your results.

Answer:

Maximum power is

P = V × I

P = 120 × 15

P = 1800 watt

At 1.2mpa pressure and 50c

What is pressure?
By pressing a knife against some fruit, one can see a straightforward illustration of pressure. The surface won't be cut if you press the flat part of the knife against the fruit. The force is dispersed over a wide area (low pressure).

a)Mass flow rate of the refrigerant
Therefore h1= condenser inlet enthalpy =278.28KJ/Kg
saturation temperature at 1.2mpa is 46.29C
Therefore the temperature of the condenser

T2 = 46.29C - 5
T2 = 41.29C

Now,
d)power consumed by compressor W = 3.3KW
Q4 = QL + w = Q4
QL = mR(h1-h2)-W
= 0.0498 x (278.26 - 110.19)-3.3
=5.074KW
Hence refrigerator load is 5.74Kg

(COP)r = 238/53
(Cop) = 4.490

Therefore the above values are the (a) mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.

To learn more about pressure
https://brainly.com/question/13717268
#SPJ4

Answer:

The final volumetric flow rate will be "76.4 m³/s".

Explanation:

The given values are:

\(\dot{m_{1}}=10 \ kg/s\)

\(\dot{m_{2}}=20 \ Kg/s\)

\(T_{1}=293 \ K\)

\(T_{2}=313 \ K\)

\(P_{1}=P_{2}=P_{3}=10 \ bar\)

As we know,

⇒  \(E_{in}=E_{out}\)

\(\dot{m_{1}}h_{1}+\dot{m_{2}}h_{2}=\dot{m_{3}}h_{3}\)

\(e_{1}\dot{v_{1}}h_{1}+e_{2}\dot{v_{2}}h_{2}=e_{3}\dot{v_{3}}h_{3}\)

\(\frac{P_{1}}{RP_{1}}\dot{v_{1}} \ C_{p}T_{1}+ \frac{P_{2}}{RP_{2}}\dot{v_{2}} \ C_{p}T_{1}=\frac{P_{3}}{RP_{3}}\dot{v_{3}} \ C_{p}T_{3}\)

⇒  \(\dot{v_{3}}=\dot{v_{1}}+\dot{v_{2}}\)

         \(=\frac{\dot{m_{1}}}{e_{1}}+\frac{\dot{m_{2}}}{e_{2}}\)

On substituting the values, we get

         \(=\frac{10}{10\times 10^5}\times 8314\times 293+\frac{20\times 8314\times 313}{10\times 10^5}\)

         \(=76.4 \ m^3/s\)

Prelab 2: Changing the poles in a system's transfer function affects the time response by altering the system's stability and damping characteristics. Poles are responsible for determining the behavior of the system's transient response.

When the poles are changed in Prelab 2, the time response of the system may exhibit different characteristics such as faster or slower settling time, overshoot, or oscillatory behavior.

The poles of a transfer function are the values of s (complex frequency) that make the denominator of the transfer function zero. These poles play a crucial role in determining the system's stability and response characteristics.

If the poles are moved closer to the origin in the left half-plane, the system becomes more stable. This leads to faster settling time, reduced overshoot, and decreased oscillations. The system response will be smoother and less oscillatory.

On the other hand, if the poles are moved away from the origin or into the right half-plane, the system becomes less stable. This can result in slower settling time, increased overshoot, and potentially even unstable behavior. The system response may exhibit oscillations and may take longer to reach a steady-state.

Changing the poles in a system has a direct impact on its time response. By adjusting the pole locations, it is possible to modify the stability, settling time, overshoot, and oscillatory behavior of the system. Understanding and controlling the pole locations are essential in designing and analyzing dynamic systems.

Learn more about system visit:

https://brainly.com/question/29312664

#SPJ11

Answer:

Please check the photo (solve)

The procedure is as follows in C++: double base calcPyramidVolume. Length, two bases. Double pyramid, width, Height.

The parameter variable for the following function prototype has a data type of double. Using the C double data type, high-precision floating-point data or integers are saved (up to 15 to 17 digits). There are large decimal number values recorded. In comparison to float data, values data may store twice as much information. As a result, it is referred to as a double data type. The double data type of the C programming language is used to store high-precision floating-point data or integers in computer memory. The double data type is so named because it can hold data that is twice as large as the float data type. Eight bytes, or 64 bits, make up a double.

Learn more about Double data type here:

https://brainly.com/question/29846304

#SPJ4

The reason an engineer may choose to use a prefabricated  building component is because: D. She wants the construction to move quickly.

A prefabricated  building component is also referred to as prefabs and it can be defined as a component that is fully manufactured to standard in a manufacturing plant or factory and then transported to a construction site, for partial assemblage and usage by an engineer. Some examples of prefabricated  building components are:

Generally, the two (2) main reasons why an engineer may choose to use a prefabricated  building component are:

I. To minimize negative environmental impacts by using standard materials from the manufacturing plant or factory.

II. To make the construction process move quickly.

Read more on prefabs here: https://brainly.com/question/15799927

H.261 uses temporal and spatial redundancy to compress video, while H.263+ allows independent forward MVs for B-frames in PB-mode. This increases average complexity and bandwidth, but can logarithmic compression. Improvements to prediction can also improve compression.

1. H.261 utilizes temporal and spatial redundancies in order to compress video. It manages this by using a motion estimation process that examines differences between successive frames and predicts the motion of objects. It also uses a series of transform and quantization processes to reduce the size of the video while maintaining the necessary visual information.

3. This idea is not very efficient in terms of compression ratio because the H.261 codec would not be able to take advantage of the redundancies between the images. It is more beneficial to use a dedicated image compression codec such as JPEG to compress each image individually.

6a. The logarithmic MV search method utilizes the assumption of continuity in the residual frame because it assumes that the motion between successive frames will be small. This allows for the search for the best match to be more efficient.

6b. An example of when this assumption fails is when there is a large jump in the motion between successive frames.

6c. The hierarchical search method does not suffer from suboptimality. It is more efficient than the logarithmic MV search method because it does not rely on the assumption of continuity in the residual frame.

7. The encoded video size can be calculated by multiplying the average compression ratio by the total number of frames. The total number of frames can be calculated by multiplying the frame rate by the video length. Therefore, the encoded video size is equal to 10 x 30 x 90 x 60 = 162,000,000.

9. Advanced prediction mode in H.263 achieves better compression by utilizing more complex prediction methods. This includes using combinations of motion vectors from previous frames and using multiple motion vector predictors.

10. Possible improvements on the current method may include using a more complex algorithm for selecting the prediction vector, such as finding the one that yields the lowest error. Additionally, incorporating more motion vectors from previous frames into the prediction may improve the accuracy of the prediction.

11. The trade-offs of H.263+ compared to H.263 in PB-mode are increased complexity due to the need to store more motion vectors, and an increase in bandwidth due to the larger size of the encoded bitstream. The point of having PB joint coding is to improve compression by sharing data between the P and B frames, which is not possible if the B-frames have independent motion vectors.

Learn more about average here

https://brainly.com/question/24057012

#SPJ4

Sure! Here's an example MATLAB program that solves a system of linear equations using Cramer's Rule for a 3x4 matrix:

```matlab

% Input the coefficient matrix

A = input('Enter the coefficient matrix A (3x3): ');

% Input the constant matrix

B = input('Enter the constant matrix B (3x1): ');

% Calculate the determinant of the coefficient matrix

det_A = det(A);

% Initialize the solution vector

X = zeros(3, 1);

% Apply Cramer's Rule

for i = 1:3

   % Create a temporary matrix by replacing the i-th column with the constant matrix

   temp_A = A;

   temp_A(:, i) = B;

   % Calculate the determinant of the temporary matrix

   det_temp_A = det(temp_A);

   % Calculate the solution for the i-th variable

   X(i) = det_temp_A / det_A;

end

% Display the solution

disp('The solution for the system of linear equations:');

disp(X);

```

In this program, the user is prompted to enter the coefficient matrix `A` (3x3) and the constant matrix `B` (3x1). The determinant of matrix `A` is calculated using the `det` function in MATLAB. The program then uses a loop to apply Cramer's Rule by replacing each column of `A` with `B` and calculating the determinants of the resulting matrices. Finally, the solution vector `X` is displayed, representing the values of the variables in the system of linear equations.

Learn more about  MATLAB program here:

https://brainly.com/question/32416063

#SPJ11

Where are your answer options?

Answer:

Implement a hazard communication program

Explanation: i took the quiz

Based on the information, the Java implementation of the solution is given.

class Solution {

   public int solution(int[] blocks) {

       int n = blocks.length;

       // Initialize two arrays to store the maximum distances

       int[] leftDist = new int[n];

       int[] rightDist = new int[n];

       // Calculate the maximum distances when moving from left to right

       leftDist[0] = 1; // At least one block is reachable

       for (int i = 1; i < n; i++) {

           if (blocks[i] >= blocks[i - 1]) {

               leftDist[i] = leftDist[i - 1] + 1;

           } else {

               leftDist[i] = 1;

           }

       }

       // Calculate the maximum distances when moving from right to left

       rightDist[n - 1] = 1; // At least one block is reachable

       for (int i = n - 2; i >= 0; i--) {

           if (blocks[i] >= blocks[i + 1]) {

               rightDist[i] = rightDist[i + 1] + 1;

           } else {

               rightDist[i] = 1;

           }

       }

       // Find the maximum distance

       int maxDistance = 0;

       for (int i = 0; i < n; i++) {

           int distance = Math.max(leftDist[i], rightDist[i]);

           maxDistance = Math.max(maxDistance, distance);

       }

       return maxDistance;

   }

}

Learn more about Java on

https://brainly.com/question/26642771

#SPJ1

I =1000 x s [ square root of three x v]

Explanation:

Answer:

To calculate full load current, divide the full load power by the product of the full load voltage times 1.723

Based on  the data given, the regression equation y on-x is y = 3/4x + 1.

y = (3/4)x + 100

For more such questions on Regression:

https://brainly.com/question/14230694

#SPJ8

INSIDE JOIN

When using this join method, the records that have matching values in both tables are returned. All the tuples with matching values in both tables will be output if you perform an INNER join operation between the Employee table and the Projects table.

If the criteria is met, the INNER JOIN keyword selects all rows from both tables. This keyword will combine all rows from both tables where the criterion is met to create the result set.

SQL supports a total of four join types. types include left outer join, right outer, and inner join.

To know more about INNER join visit:-

https://brainly.com/question/28160914

#SPJ1

Let $x ij$ represent the quantity of cars that will be delivered in the following two hours from city I to city j.

Network Diagram:

LP Formulation:

Maximize Z = 150x14 + 150x24

Subject to:

x11 + x12 + x13 + x14 <= 300 (flow from city 1 to other cities)

x21 + x22 + x23 + x24 <= 300 (flow from city 2 to other cities)

x31 + x32 + x33 + x34 <= 300 (flow from city 3 to other cities)

x41 + x42 + x43 + x44 <= 300 (flow from city 4 to other cities)

x11 + x21 + x31 + x41 = 150 (flow into city 1)

x12 + x22 + x32 + x42 = 150 (flow into city 2)

x13 + x23 + x33 + x43 = 150 (flow into city 3)

x14 + x24 + x34 + x44 = 150 (flow into city 4)

xij >= 0 (all variables must be positive)

To learn more about network diagram and the LP formulation refer to:

https://brainly.com/question/29672656

#SPJ4

Answer:

the answer I know is A. different substances. hope this helps :).

Explanation:

just always study hard and God bless.

Answer:

Doing associative brainstorming

Allow all members who have an opinion or comment to contribute

You cannot criticize someone or there judgment on a topic

Always encourage someone if they need help with something and give input

Let everyone talk and share there solutions

Explanation:

Overall it’s good to do the things I have listed above because it can help you in planning.

Answer:

We often call these prewriting strategies “brainstorming techniques.” Five useful strategies are listing, clustering, freewriting, looping, and asking the six journalists' questions. These strategies help you with both your invention and organization of ideas, and they can aid you in developing topics for your writing.

Machine language, also known as machine code or object code, is a set of binary digits or bits that the computer reads and decodes. The only language that a computer can comprehend is machine language.

The fundamental language of computers is machine code, which is also referred to as machine language. It is made of digital binary integers, is read by the central processing unit (CPU) of the computer, and appears to be a very lengthy string of zeros and ones.

Machine language is a type of low-level programming language that can only be understood by machines and is composed of binary integers or bits. The CPU immediately executes the instructions, often known as machine code or object code. 

To learn more about Machine language refer to:

https://brainly.com/question/28432869

#SPJ4

Answer:

yes i do.

Explanation:

it's pretty easy in my opinion but i dont know about you why do you ask?

A binary temperature-composition phase diagram illustrates the relationship between temperature, the concentration of each component in a binary mixture, and the phase boundaries of the mixture.

At a eutectic point, two solid phases and a liquid phase are in equilibrium. In other words, three phases are present when the system is at equilibrium. Let's go into more detail about what a eutectic point is and why it's important on a phase diagram.A eutectic point is the lowest temperature at which a eutectic mixture melts. A eutectic mixture is a combination of two or more components that, when melted, results in a homogeneous liquid that solidifies into two or more solid phases.

In the case of a binary mixture, a eutectic mixture contains two components in specific proportions that produce a eutectic reaction.The eutectic point on a binary temperature-composition phase diagram is located at the intersection of the two solidus curves (which represent the temperatures at which solidification of one component occurs) and the liquidus curve (which represents the temperature at which melting of the solid occurs). At the eutectic point, the proportions of the two components are such that the solid phases are in equilibrium with the liquid phase, resulting in the formation of two solid phases and a liquid phase.

To know more about composition visit:

https://brainly.com/question/32502695

#SPJ11

Answer:

411.953 kpa

Explanation:

We have the following assumptions

1. Steady incompressible flow.

2. Burst section water pressure = water main pressure

3. Air and water have negligible friction between them.

Max height = 42 m

Max water density = 277.14k

Density of water

Pwater = 999.8395kg/m

Water gets to 42m because of pressure in the line

P (line) = Pwater * g * h

= 999.8395 x 9.81 x 42

= 411.953Kpa

Answer:

  see attachments

Explanation:

A Karnaugh map for the output is shown in the first attachment. The labeled and shaded squares represent the cases where Y = HIGH. The associated logic can be simplified to

  Y = A3 xor A0

when the don't care at 1110 gives an output of HIGH.

__

The second attachment shows a logic diagram using a 4:1 multiplexer to do the decoding. A simple XOR gate would serve as well. If AND-OR-INV logic is required, that would be ...

  Y = Or(And(A3, Inv(A0)), And(A0, Inv(A3)))

Pressure altitude is the vertical distance above the standard datum plane, whereas Density altitude is the height in the International Standard Atmosphere at which the air density is equal to the actual air density at the place of observation.

Pressure Altitude Pressure Altitude is a term used to describe the altitude of an aircraft above a given datum plane. It is measured by an altimeter that has been calibrated to read pressure rather than altitude. This is because pressure is directly proportional to the altitude, and so changes in pressure can be used to determine changes in altitude. Density Altitude Density Altitude is the altitude in the International Standard Atmosphere (ISA) at which the air density is equal to the actual air density at the place of observation.

It is affected by the air temperature, atmospheric pressure, and humidity, and is usually higher than the pressure altitude.Q2: The effect of pressure, humidity, and temperature on air density is described below:Air Pressure: When air pressure increases, air density also increases.Humidity: Humidity decreases air density because water molecules are lighter than air molecules and displace some of the air molecules in a given space.Temperature: When air temperature increases, air density decreases. Conversely, when air temperature decreases, air density increases.Q3: The primary factors that affect the performance of an aircraft are the following:Thrust: The forward force that propels the aircraft forward. Weight: The downward force exerted on the aircraft due to gravity.

To know more about standard datum visit:

https://brainly.com/question/31676105

#SPJ11

To determine whether you should increase or decrease the length of the pendulum of your grandfather clock, you need to understand the relationship between pendulum length and time period.

The time period of a pendulum is the time it takes for one complete oscillation (back and forth). It can be calculated using the formula:

T = 2π√(L/g)

Where:

T is the time period,

L is the length of the pendulum, and

g is the acceleration due to gravity.

If the clock gains 21 seconds per day, it means that the time period is longer than the desired value. To decrease the time period, you need to decrease the pendulum length.

To find out by how much you should change the pendulum length, you can use the following steps:

Calculate the current time period (T) using the given length (L = 0.9930 m) and the known acceleration due to gravity (g = 9.8 m/s^2).

Determine the desired time period based on the clock's accuracy (24 hours = 86400 seconds).

Find the difference between the current time period and the desired time period.

Adjust the pendulum length in the appropriate direction (decrease in this case) to reduce the time period difference.

Convert the difference in length to millimeters (mm) for precision.

By performing these calculations, you can determine the specific amount by which you should decrease the pendulum length in millimeters.

Know more about acceleration here:

https://brainly.com/question/2303856

#SPJ11

The loss of energy per unit mass in the nozzle is 1.14 kJ/kg (negative sign indicates a decrease in energy).

We can use Bernoulli's equation to calculate the loss of energy per unit mass in the nozzle: Total pressure at the inlet = Static pressure at the inlet + Dynamic pressure at the inlet

186 kPa = 178 kPa + 0.5ρV^2, where ρ is the density of steam and V is the velocity of steam at the inlet.

Since the steam nozzle is convergent, we can assume that the velocity at the exit is sonic (i.e., the Mach number is 1):

Velocity at exit = Velocity at throat / Sonic velocity = √(2 * Cp * ΔT) / √(Cp * T1) = √(2 * 1860 * 850) / √(1600 * 452) = 539 m/s

Total pressure at exit = Static pressure at exit + Dynamic pressure at exit

180 kPa = 100 kPa + 0.5ρV^2, where V is the velocity of steam at the exit.

Using the above equations, we can calculate the density of steam at the inlet:

0.5ρV^2 = 186 kPa - 178 kPa = 8 kPa

ρ = 8 / (0.5 * V^2) = 8 / (0.5 * (539)^2) = 0.0297 kg/m^3

Now, we can calculate the loss of energy per unit mass in the nozzle:

Loss of energy per unit mass = (Total enthalpy at the inlet - Total enthalpy at exit)

Total enthalpy at inlet = h1 = Cp * T1 = 452 * 1.872 = 847.94 kJ/kg (assuming Cp = 1.872 kJ/kg-K for steam)

Total enthalpy at exit = h2 = Cp * T2 + 0.5V2^2 = 849.08 kJ/kg (assuming T2 = T1, since the nozzle is adiabatic)

Loss of energy per unit mass = (h1 - h2) = 847.94 - 849.08 = -1.14 kJ/kg

Learn more about static pressure here:

https://brainly.com/question/14873280

#SPJ4