Why is there an Engineering Process?

Answer:

a. 0.6 W/mK b. 45 kJ c. 0.025 m²K/W

Explanation:

a. Determine the thermal conductivity (k) for the insulating material.

The rate at which heat is transferred across the insulating material P = kAΔT/L where K = thermal conductivity, A = area of insulating material = 25 cm × 25 cm = 0.25 m × 0.25 m = 0.0625 m², ΔT = temperature difference between inside and outside = 10.0 °C = 10.0 K and L = thickness of insulating material = 15 mm = 0.015 m

So, making k subject of the formula, we have

k = PL/AΔT

Now, P = 25.0 W = heat delivered to box = heat delivered to insulating material per second.

k = 25.0 W × 0.015 m/(0.0625 m² × 10.0 K)

k = 0.375 Wm/(0.625 m²K)

k = 0.6 W/mK

b. Find the energy transferred (Q) through the material after a half hour.

Since quantity of energy transferred Q = Pt where P = heat delivered to box = heat delivered to insulating material per second = 25.0 W and t = time  the heat is delivered = 1/2 h = 0.5 h = 0.5 × 60 min = 30 min × 60 s/min = 1800 s

So, Q = 25.0 W × 1800 s

Q = 45000 J

Q = 45 kJ

c. Find the R-value of the insulation.

R - value, R = L/k = 0.015 m/0.6 W/mK = 0.025 m²K/W

Answer:

the minimum distance would be x where x = distance

Explanation:

use trigonometry to find out distance by using sohcahtoa

Answer:

The rule of thumb amount of time to determine whether something is current or noncurrent is: 2 points.

Explanation:

The Answers for the given question are as follow:

a. The model speed is approximately 31.62 rev/min.

b. The scale ratio is approximately 0.0417.

c. The estimated volume flow rate through the model is approximately 943.44 m^3/s.

d. The bearing thrust of the model is approximately 9.72 kN.

To calculate the required values for the water turbine model, we can utilize the concept of dynamic similarity.

a. To find the model speed, we can use the principle of geometric similarity, which states that the ratio of speeds is equal to the ratio of the square roots of the head. Thus:

  Model speed = (√(Model head))/(√(Full-size head)) * Full-size speed

              = (√4.9/√16.5) * 93.7 rev/min

              = 31.62 rev/min

b. The scale ratio can be determined using the equation:

  Scale ratio = (√(Model power))/(√(Full-size power))

             = (√37.5kW)/(√27MW)

             ≈ 0.0417

c. To estimate the volume flow rate through the model, we can use the power equation:

  Model power = (Model efficiency) * (Volume flow rate) * (Model head) * (Gravity)

  37.5kW = 0.88 * (Volume flow rate) * 4.9m * (9.81m/s^2)

  Solving for the volume flow rate:

  Volume flow rate = 37.5kW / (0.88 * 4.9m * 9.81m/s^2)

                   ≈ 943.44 m^3/s

d. To calculate the bearing thrust of the model, we can use the principle of force similarity:

  Bearing thrust model = (Model power / Full-size power) * Full-size bearing thrust

                      = (37.5kW / 27MW) * 7.0GN

                      ≈ 9.72kN

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Answer:

They find problems and solutions by working together

Explanation:

Jar is a cylinder that has an R-radius and an H-height. The jar's volume is then calculated as V = R2H. The volume of honey in the jar is V honey = (1/2)R2(H/2) = (1/4)R2H if the honey fills the jar to half its height.

The volume of any cylinder with base radius "r" and height "h" equals base times height. A cylinder's volume is therefore equal to r2h cubic units.

F_buoyancy = (density of water) x (volume of water) x (acceleration due to gravity)

F_buoyancy = 1.0 x πR^2h x g

Since the jar is in equilibrium, the weight of the jar and honey must be equal to the buoyant force. Therefore, we can set the two equations equal to each other and solve for h:

3.5πR^2H x g = πR^2h x g

h = (3.5/1) x (H/2)

h = 1.75H

Therefore, the jar will sink into the water up to a height of 1.75 times its original height.

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Dust, dirt, or metal chips can pose a potential eye injury risk in a shop.

Dust, dirt, or metal chips can pose a potential hazard to the eyes and result in eye injury risk in a shop.

It is important to wear proper eye protection when working with tools or materials that can generate flying debris to avoid eye injuries.

This is one of the necessary precautions that should be taken when working in a factory or shop that has flying debris.

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Freddie Mercury

Piano

Brian May

Guitar

John Deacon

Bass guitar

Roger Taylor

Drum Kit

Mike Grose

Doug Bogie

Barry Mitchell

Answer:Why should a driver conduct a pre-entry check? Allows the driver to check for anyone behind the vehicle, Allows the driver to check for low or flat tires, Allows the driver to check for leaking fluids.

Explanation:

Compressed gas cylinders shall be secured in an upright position at all times except, if necessary, for short periods of time while cylinders are actually being hoisted or carried.

All gas cylinders must be stored upright and restrained with safety chains or other secure devices, as stated in AS4332-2004 - The storage and handling of gases in cylinders.

Acetylene cylinders should be stored upright in order to avoid the gas from separating from the acetone. All compressed gas cylinders, whether filled, half filled, or empty, must comply with the standard.

The cylinders are designed exclusively for use in the gas phase, which emerges when the cylinder is held upright. Liquid leakage occurs when the cylinder is used horizontally, which has negative effects. Gas cylinders should never be used horizontally. They might leak, which might be extremely dangerous. 

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Answer:

. This is because the injuries can takes place at the time of work.

While lifting heavy objects at the time of work One should divide the loads so that it does not feels burden.

Aids like pulley, handles and wheels can be used to divide the load and weight should be carried in a way that it can be easily carried.

Get manual help with way to heavy loads and the postures should also be maintained at the time of lifting the objects.

Explanation:

Answer:

While lifting heavy objects at the time of work One should divide the loads so that it does not feels burden. Aids like pulley, handles and wheels can be used to divide the load and weight should be carried in a way that it can be easily carried. Get manual help with way to heavy loads and the postures should also be maintained at the time of lifting the objects.

Explanation:

import java.util.Scanner;

public class CodesCracker

{

  public static void main(String[] args)

  {

     float r, circum;

     Scanner s = new Scanner(System.in);

     System.out.print("Enter the Radius of Circle: ");

     r = s.nextFloat();

     circum = (float)(2*3.14*r);

     System.out.println("\nCircumference = " +circum);

  }

}

If there is a problem with the charging system on a late-model vehicle, it is very likely that a "fault code" or "diagnostic trouble code (DTC)" will be logged.

These codes are generated by the vehicle's onboard diagnostic system. They monitor various components and systems for malfunctions. When an issue is detected in the charging system, such as a faulty alternator or a malfunctioning battery, a specific fault code is recorded in the vehicle's computer system.

This code helps technicians diagnose and troubleshoot the problem by providing information about the nature and location of the issue within the charging system.

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Answer:

Inversion and the conservation of ambiguity are two geometric transformations that can be used to analyze and study geometric figures. While they have some similarities, they also have some important differences.

Inversion is a geometric transformation that involves inverting a figure in a circle or a sphere with respect to a center. This transformation maps every point inside the circle to a point outside the circle, and vice versa. Inversion is a conformal transformation, which means that it preserves angles between lines and circles. Inversion is useful for studying circles and angles, and it can be used to prove many theorems in Euclidean geometry.

On the other hand, the conservation of ambiguity is a geometric property that states that if a figure can be transformed into another figure by a certain transformation, then the transformation can be reversed to transform the second figure back into the first one. This property is important in topology, which is the study of the properties of geometric figures that are preserved under continuous transformations.

One similarity between inversion and the conservation of ambiguity is that both are transformations that preserve certain properties of geometric figures. Inversion preserves angles, while the conservation of ambiguity preserves the topology of a figure. Another similarity is that both can be used to prove theorems and to analyze geometric figures.

However, there are also some important differences between inversion and the conservation of ambiguity. Inversion is a specific geometric transformation that involves inverting a figure in a circle or a sphere. In contrast, the conservation of ambiguity is a more general property that applies to any transformation that preserves the topology of a figure. Additionally, inversion is a transformation that is specific to Euclidean geometry, while the conservation of ambiguity is a property that applies to any type of geometry.

In summary, inversion and the conservation of ambiguity are two important concepts in geometry, but they have different applications and properties. Inversion is a specific transformation that is useful for studying angles and circles, while the conservation of ambiguity is a general property that applies to any transformation that preserves the topology of a figure

Answer:

1028.1184 Ohms

Explanation:

Given the following data;

Assuming the temperature coefficient of resistance for carbon at 0°C is equal to 0.0006 per degree Celsius.

To find determine its new resistance, we would use the mathematical expression for linear resistivity;

\( R_{89} = R_{0} + R_{0}(\alpha T) \)

Substituting into the equation, we have;

\( R_{89} = 976 + 976*(0.0006*89) \)

\( R_{89} = 976 + 976*(0.0534) \)

\( R_{89} = 976 + 52.1184 \)

\( R_{89} = 1028.1184 \ Ohms \)

Explanation:

1) Right the problem to solve

2) Anaylse the problem.

3) Define the problem

4) Find solutions

5) Select the best solution

6) Implement the solution

7) Evaluate and learn

Modern manufacturing has significantly advanced to cater to customization and meet individual needs.

Few examples of how modern manufacturing allows for customization:

1)3D Printing/Additive Manufacturing: 3D printing enables the production of highly customized items by building layer upon layer of material.

This technology allows for the creation of unique shapes, sizes, and designs, enabling customization on a personal level.

From customized prosthetics to personalized jewelry, 3D printing revolutionizes manufacturing by tailoring products to individual requirements.

2)Mass Customization in Apparel: Traditional manufacturing processes often involved producing items in standard sizes, limiting options for consumers.

However, modern manufacturing techniques, such as computer-aided design (CAD) and computer-aided manufacturing (CAM), allow for mass customization in apparel.

By utilizing body scanning and virtual fitting technologies, companies can offer custom-made garments that fit an individual's unique measurements and style preferences.

3)Customized Electronics: With advancements in technology, manufacturers can now offer customization options for electronic devices.

Customers can personalize specifications such as memory capacity, display size, and processing power to suit their needs.

Some companies even allow customers to design the appearance and choose specific features of their gadgets, ensuring that the final product aligns with their preferences.

4)Personalized Food and Beverages: Manufacturing has extended to the food and beverage industry, enabling customization in culinary experiences.

Companies now offer personalized nutrition plans, customized meal kits, and even 3D-printed food tailored to individual dietary requirements and taste preferences.

5)Automotive Industry: The automotive industry has embraced customization, allowing customers to configure various aspects of their vehicles, including color, trim, interior options, and additional features.

Some manufacturers offer online platforms where customers can design and visualize their personalized cars before ordering.

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Answer:

The benefits of the frame of reference in question are described in the description segment.

Explanation:

The device used to position a concave part on a plane iron is usually a grinder, that's option C.

A grinder is a electricity device geared up with abrasive wheels or belts that rotate at excessive speeds. It is normally used for shaping, sprucing, and grinding numerous materials. To positioned a concave edge on a plane iron, the grinder can be used to carefully get rid of material from the brink of the iron, growing a concave or curved shape.

Option A, an oilstone, is a sprucing stone commonly used for honing and polishing blades. Option B, a whetstone, is any other form of sharpening stone used for sprucing cutting gear. These options aren't specially designed to place a concave side on a aircraft iron.

Option D, a wire side, refers to a condition that could arise during sharpening while a first-rate, brief burr of metal is fashioned on the edge of the device. While it's miles a byproduct of sprucing, it is not a device itself.

Therefore, the most suitable tool for putting a concave aspect on a aircraft iron is a grinder.

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Answer:A chisel is a tool with a characteristically shaped cutting edge (such that wood chisels have lent part of their name to a particular grind) of blade on its end, for carving or cutting a hard material such as wood, stone, or metal by hand, struck with a mallet, or mechanical power. The handle and blade of some types of chisel are made of metal or of wood with a sharp edge in it.

Explanation:

Explanation:

Fuel Efficiency and Tire life

Answer:

The mitochondria's job is to produce the majority of the chemical energy required to power a cell's metabolic reactions.

The chloroplast's job is to create food for a cell through the process of photosynthesis.

Answer:

Uh- a fidget spinner can be... a fidget?

Explanation:

Unless you're talking about chemical changes, then a fidget cannot change forms <33

Answer:

C.)Charles is an Industrial Production Manager, Clarissa is a Medical Equipment repairer, and Francine is a Quality Control Analyst.

Explanation:

Answer:

Part A

The acceleration of car 2, is larger than the acceleration of car 1

Part B

The average speed of car 2 is larger than the average speed of car 1

Explanation:

The question relates to kinematic motion

Using a similar question for the parameters, we have;

The time it takes car 1 to accelerate to v₁ = 20 m/s is t₁ = 30 s

The time it takes car 1 to reach point B, t₁₂ = 35 s

The time it takes car 2 to accelerate to v₂ = 20 m/s is t₂ = 20 s

The time it takes car 2 to reach point B is t₂₂ = 30 s

Part A

From the kinematic equation of motion, v = u + at, we have;

Acceleration, a = (v - u)/t

Where;

a = The acceleration

v = The final velocity

u = The initial velocity = 0 m/s for both cars as they start from rest

t = The time taken

The acceleration of car 1, a₁  = (v₁ - u₁)/t₁

∴ a₁ = (20 m/s - 0 m/s)/(30 s) = 2/3 m/s²

The acceleration of car 2, a₂  = (v₂ - u₂)/t₂

∴ a₂ = (20 m/s - 0 m/s)/(20 s) = 1 m/s²

The acceleration of car 2, a₂ =  1 m/s² is larger than the acceleration of car 1, a₁ = 2/3 m/s²

Part B

Average speed = Total distance/(Total time taken to reach the distance)

Let 'B' represent the distance to point in meters, we have;

The average speed of car 1 = B/(The time it takes car 1 to reach point B)

∴ The average speed of car 1 = B/35 m/s

The average speed of car 2 = B/(The time it takes car 2 to reach point B)

∴ The average speed of car 2 = B/30 m/s

Noting that the larger velocity is given by the smaller divisor to 'B', we have;

The average speed of car 2 = B/30 m/s is larger than the average speed of car 1 = B/35 m/s

Note that it takes only 5 mA (0.005 A) of current leakage from the hot wire to the ground to cause a GFCI to trip.  (Option C)

A GFCI is an electrical safety device that can protect people from getting shocked by electricity.

It can detect if electricity is leaking from a wire to the ground, which could be dangerous.

Even a tiny bit of electricity leaking, as little as 0.005 amps, can cause the GFCI to turn off the electricity to prevent anyone from getting hurt. So, it's important to use GFCI outlets to help keep people safe from electrical shocks.

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