Which courses might a mechanical engineer take in college

Answer:

z=X=c+J=A

Explanation:

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

The answer is A. Sensors

Answer:

answer below:

Explanation:

Before the Industrial Revolution, transportation relied on animals (like horses pulling a cart) and boats. Travel was slow and difficult. It could take months to travel across the United States in the early 1800s before industrial revolution

The Industrial Revolution completely changed the way people traveled and how goods were transported.

the problem of traveling upstream was solved during the industrial revolution by the steam engine. in order to make better use of water transportation, canals were build to connect rivers, lakes and oceans. the invention of the railroad and the steam powered locomotive opened up a whole new world in transportation. even with steamboats and railroads, people still needed a better wat to travel between rivers and train stations. a new process called the "macadam " process was used to create smooth gravel roads

I hope this helps a bit.

Answer:

a. True

Explanation:

The study of fluids in a state of rest or in motion and the forces involved in it is called fluid mechanics. Fluid mechanics has a wide range of applications in the field of mechanical engineering as well as civil engineering.

When we study the flow of fluid between any two flat plates that is indefinitely flat and is parallel, the flow of the fluid is known as plane Poiseulle flow. The profile of a plane Poiseulle flow is parabolic.

The velocity profile of a plane Poiseulle flow is :

\($\frac{u(y)}{U_{max}}=1-\left(\frac{2y}{h}\right)^2$\)

Thus the answer is TRUE.

The correct answer is A.Scenario 1: Broken SidewalkPerson's velocity = walking velocity, opposite direction of the sidewalk's directionScenario 2: Riding SidewalkPerson's velocity = sidewalk's velocity.

same direction as the sidewalk's directionScenario 3: Walking and Riding SidewalkPerson's velocity = (walking velocity + sidewalk's velocity), same direction as the sidewalk's directionWhen the sidewalk is broken, the person's velocity is equal to their walking velocity. Therefore, to find the person's velocity, we need to divide the length of the sidewalk by the time it takes to walk the full length:velocity = distance/time = 87m/106s = 0.82 m/sWhen the person is just riding the sidewalk without walking, their velocity is equal to the velocity of the sidewalk itself. Therefore, we can use the same equation as in part B, but with the different time:velocity = distance/time = 87m/66s = 1.32 m/sWhen walking and riding the sidewalk at the same time, the person's velocity is the sum of their walking velocity and the sidewalk's velocity

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The problem at hand deals with calculating various thermodynamic properties of a gas mixture that is being separated by a spiral-wound, nonporous cellulose acetate membrane separator.

The permeate that is produced by the separator contains 95 mol% pure H2, and no ethane, while the relative split ratio (separation factor, SP) for H2 relative to methane is 47. The data that is given in the problem is as follows:FeedPermeateRetentatePhase conditionVaporVaporVaporTemperature, F8036365Pressure, psia36550365Enthalpy, Btu/lbmol855083808890Entropy, Btu/lbmol1.5204.222.742The required calculations are as follows:Calculating the Entropy change:We are required to calculate the irreversible production of entropy in Btu/h-R, the lost work in Btu/h, and the minimum work of separation in Btu/h. For these calculations, we require the entropy change between the Feed and Permeate streams.

From the given data, we have:SFeed = 1.520 Btu/lbmol SPermeate = 4.222 Btu/lbmolΔS = SPermeate - SFeed= 4.222 - 1.520 = 2.702 Btu/lbmol. KCalculating the Irreversible Production of Entropy:The formula for calculating the irreversible production of entropy is given by,  Irreversible Production of Entropy (S dot) = Qrev/Ts  Here, Qrev = - TΔS  Since the temperature difference between the Feed and Permeate streams is negligible, we can assume that the temperature of the surroundings, i.e. 80F = 540 R is the same as that of the streams. Hence, the temperature of the streams can be taken as the temperature of the surroundings.

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The largest number among three numbers, follow these steps: Compare the first two numbers to bed load determine which is larger. Compare the larger number from step 1 with the third number. If the third number is larger than the number from step 1, then the third number is the largest.

To find the largest number among three numbers, you need to compare each number with the other two. Comparing the first two numbers will give you the larger of the two. This number will then be compared with the third number to determine which is the largest. If the third number is larger, then it is the largest among the three. If not, then the larger number from step 1 is the largest among the three.

Take the three numbers (let's call them A, B, and C) that you want to compare. Compare the first two numbers (A and B). If A is greater than B, set A as the current largest number. If B is greater or equal to A, set B as the current largest number. Now, compare the current largest number with the third number (C). If the current largest number is greater than C, it remains the largest number. If C is greater or equal to the current largest number, set C as the largest number.

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Power delivered to the runner is approximately 2.34 MW and the hydraulic efficiency of the Pelton wheel is approximately 88%.

Step-by-step explanation:

Calculate the coefficient of bucket using the bucket deflection angle:

cos(170°/2) = cos(85°) = 0.087

coefficient of bucket = 1 - 0.087 = 0.913

Calculate the mass flow rate:

mass flow rate = density x volumetric flow rate

= 1000 kg/m3 x 1 m3/s

= 1000 kg/s

Calculate the power delivered to the runner:

Power = mass flow rate x acceleration due to gravity x head x efficiency

= 1000 kg/s x 9.81 m/s2 x 270 m x 0.98 x 0.913

= 2341596.6 W

≈ 2.34 MW

Calculate the hydraulic efficiency:

Hydraulic efficiency = power output / power input

= 2.34 MW / (1000 kg/s x 9.81 m/s2 x 270 m x 0.98)

≈ 0.88 or 88%

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Answer:

Option2  4

Explanation:

One of the most important general aspects about measuring pressure is that it must be predetermined it ought to be tight it should be light it need to be consistent

Pressure measurement is the measurement of an implemented pressure with the aid of a fluid (liquid or gas) on a floor. stress is typically measured in devices of pressure according to unit of surface place. Many techniques were evolved for the dimension of pressure and vacuum. units used to degree and display stress routinely are known as pressure gauges, vacuum gauges or compound gauges (vacuum & pressure). The widely used Bourdon gauge is a mechanical device, which each measures and shows and might be the high-quality known sort of gauge.

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Answer:

it's answer B. I took the test

: None of these answers are correct.

In vertical analysis, each item is expressed as a percentage of a base amount within the same financial statement. The base amount varies depending on the purpose of the analysis. Common base amounts used in vertical analysis include total assets, total liabilities, net sales, or total revenue.Vertical analysis helps to assess the relative proportion of each item in relation to the base amount and provides insights into the composition and structure of the financial statement. By expressing each item as a percentage, it allows for meaningful comparisons and trend analysis over time.

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The buoyant force is greater on the aluminum block compared to the lead block. This is because buoyant force is directly proportional to the displaced volume of fluid, and not the mass or density of the object. As both the blocks are of identical area, they displace the same amount of water. However, the density of lead is higher than aluminum, which means that the lead block has a greater mass compared to the aluminum block.

Therefore, the buoyant force system on the lead block is less than the buoyant force on the aluminum block, even though the lead block has a higher density. In conclusion, the buoyant force depends on the volume of the object displaced, and not on its density or mass.

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Answer:

This band gap also allows semiconductors to convert light into electricity in photovoltaic cells and to emit light as LEDs when made into certain types of diodes. Both these processes rely on the energy absorbed or released by electrons moving between the conduction and valence bands.

Explanation:

On the internet

Technician A is correct; the valve core should be installed before inflating a tire to seat its beads.

This helps to ensure that the beads are properly seated and that the tire is properly balanced. Unseating the tire beads while the tire is inflated can cause damage to the tire and may lead to a dangerous situation.

A valve core is a small, cylindrical component inside a valve stem that controls the flow of air or liquid. It is typically made of a brass or stainless steel material and is used in a wide range of applications, such as controlling the pressure in tires or the flow of water in plumbing systems. It consists of a small spring that is used to keep the valve in a closed or open position, depending on the application. The valve core can be replaced or removed with a special tool, such as a valve core removal tool or a Schrader valve tool.

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Answer:

space look at tge explanation

Explanation:

Discuss some of the hazards associated with hot work in confined spaces. Provide specific examples or personal experiences in your response.

The hazards associated with performing hot work include:

Note that when working with anything that cause spark or fire, the common hazard are:

Therefore, The hazards associated with performing hot work include:

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The XXX output of the following coding is return myData.itemCount * myData.price;. The correct option is B.

The output, which might take the form of text on a screen, printed materials, or sound coming from a speaker, is how the computer displays the outcomes of the operation.

totalPrice() function returns a double value.

So, XXX should be a return statement.

We can access itemCount of myData using

myData.itemCount

We can access pri

ce of myData using

myData.price

So, the return statement should be

return myData.itemCount * myData.price;

Therefore, the correct option is B. return myData.itemCount * myData.price;.

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Answer:

When a pilot pushes the top of the right pedal, it activates the brakes on the right main wheel/wheels, and when the pilot pushes the top of the left rudder pedal, it activates the brake on the left main wheel/wheels. The brakes work in a rather simple way: they convert the kinetic energy of motion into heat energy.

This question is incomplete, the missing diagram is uploaded along this answer below.

Answer:

the forces required to keep the artery in place is 1.65 N

Explanation:

Given the data in the question;

Inlet velocity V₁ = 50 cm/s = 0.5 m/s

diameter d₁ = 15 mm = 0.015 m

radius r₁ = 0.0075 m

diameter d₂ = 11 mm = 0.011 m

radius r₂ = 0.0055 m

A₁ = πr² = 3.14( 0.0075 )² =  1.76625 × 10⁻⁴ m²

A₂ = πr² = 3.14( 0.0055 )² =  9.4985 × 10⁻⁵ m²

pressure at inlet P₁ = 110 mm of Hg = 14665.5 pascal

pressure at outlet P₂ = 95 mm of Hg = 12665.6 pascal

Inlet volumetric flowrate = A₁V₁ = 1.76625 × 10⁻⁴ × 0.5 = 8.83125 × 10⁻⁵ m³/s

given that; blood density is 1050 kg/m³

mass going in m' = 8.83125 × 10⁻⁵ m³/s × 1050 kg/m³ = 0.092728 kg/s

Now, using continuity equation

A₁V₁ = A₂V₂

V₂ = A₁V₁ / A₂ = (d₁/d₂)² × V₁

we substitute

V₂ =  (0.015 / 0.011 )² × 0.5

V₂ = 0.92975 m/s

from the diagram, force balance in x-direction;

0 - P₂A₂ × cos(60°) + Rₓ = m'( V₂cos(60°) - 0 )    

so we substitute in our values

0 - (12665.6 × 9.4985 × 10⁻⁵)  × cos(60°) + Rₓ = 0.092728( 0.92975 cos(60°) - 0 )    

0 - 0.6014925 + Rₓ =  0.043106929 - 0

Rₓ = 0.043106929 + 0.6014925

Rₓ = 0.6446 N

Also, we do the same force balance in y-direction;

P₁A₁ - P₂A₂ × sin(60°) + R\(_y\) = m'( V₂sin(60°) - 0.5 )  

we substitute

⇒ (14665.5 × 1.76625 × 10⁻⁴) - (12665.6 × 9.4985 × 10⁻⁵) × sin(60°) + R\(_y\) = 0.092728( 0.92975sin(60°) - 0.5 )

⇒ 1.5484 + R\(_y\) = 0.092728( 0.305187 )

⇒ 1.5484 + R\(_y\) = 0.028299    

R\(_y\) = 0.028299 - 1.5484

R\(_y\) = -1.52 N

Hence reaction force required will be;

R = √( Rₓ² + R\(_y\)² )

we substitute

R = √( (0.6446)² + (-1.52)² )

R = √( 0.41550916 + 2.3104 )

R = √( 2.72590916 )

R = 1.65 N

Therefore, the forces required to keep the artery in place is 1.65 N

Answer:

Force is a kinetic quantity. Force = m x a. Hence, the mass of the body has an effect on force calculation.

When Patricia and Abel bought Mighty Mechanics, Option E: "B and C" happened. Abel bought alcohol with their profits, which caused the business to go downhill. As a result, Trevor, their son, had to help with the garage so much that he had little time for himself.

The given options describe different outcomes of Patricia and Abel's purchase of Mighty Mechanics. Option B states that Abel bought alcohol with their profits, indicating a misuse of funds. This poor financial decision led to the business going downhill, as mentioned in the same option.

Option C states that Trevor, their son, had to help extensively with the garage, leaving him with little personal time. Therefore, the correct answer is Option E, which includes both of these outcomes. Patricia's financial situation, stay-at-home status, and their overall comfort level are not mentioned in the given options.

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The content of the variable 0x21, after the execution of the instruction "bsf 0x21,0," will be 0xDE in hex notation.

The "bsf" instruction stands for "bit scan forward," and it is used to find the position of the least significant set bit in the specified register or memory location. In this case, the instruction "bsf 0x21,0" indicates that we are performing the operation on the variable located at memory address 0x21 and scanning for the least significant set bit.

Given that the initial value of the variable 0x21 is 0xDC, which is 11011100 in binary, the least significant set bit is in position 2 (counting from right to left). After executing the instruction, the bit in position 2 will be set to 0, resulting in the value 0xDE, which is 11011110 in binary or 222 in decimal, in hex notation. Therefore, the content of the variable 0x21 will be 0xDE after the execution of the "bsf 0x21,0" instruction.

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The mean of the 50 values is 80. The median of the 50 values is 76.

What is median?

A statistical measure known as the median is used to pinpoint the data set's middle value. It is often used to measure central tendency, which is the average value in a set of data. To calculate the median, the numbers in the set must be arranged in numerical order and the middle number is identified. If the set contains an even number of numbers, the median is calculated by taking the mean of the two middle numbers. The median provides an accurate representation of the data set when there are outliers, or extreme cases, present in the data. It is also helpful when analyzing data that is not normally distributed and is often used in the field of finance.

X   Relative Frequency
10  0.3
20  0.2
30  0.1
40  0.2
50  0.2
The mean of the values of X is 36. The median of the values of X is 40.

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The given statement is true. The Wilmot Proviso was a proposed piece of legislation introduced by Congressman David Wilmot in 1846. It sought to prohibit the expansion of slavery into any territory acquired as a result of the Mexican-American War, including the potential acquisition of lands such as California and New Mexico.

The Proviso stated that "neither slavery nor involuntary servitude shall ever exist in any part of [the] territory" that might be acquired from Mexico. It aimed to establish a clear policy against the expansion of slavery into the newly acquired territories.

The introduction of the Wilmot Proviso reflected the ongoing tensions and debates over the issue of slavery in the United States. It came at a time when the nation was expanding westward, raising questions about whether slavery would be allowed in these new territories.

While the Wilmot Proviso passed the House of Representatives multiple times, it never became federal law. It faced significant opposition from Southern lawmakers who saw it as a threat to their economic and political interests, as well as some Northern lawmakers who were hesitant to take a firm stance on the issue.

Despite its failure to become law, the Wilmot Proviso had a lasting impact. It heightened the sectional tensions between the North and the South, setting the stage for further debates and conflicts over the expansion of slavery. It also became a significant issue in the formation of new political parties, such as the Free Soil Party, which opposed the expansion of slavery into the territories.

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Answer:

yes dream

Explanation:

Answer:

Me: "i would just hit you, sapnap. In the freaking face" LOL

Answer:

What force is requiere to move the cylinder along

Explanation:

The kinematic viscosity of the ol is 0.006 fr2

Answer:

Explanation:

Power is the product of volts and amps:

  P = VI = (240 V)(34 A) = 8160 W = 8.16 kW

Energy is the product of power and time:

  (8.16 kW)(2 h) = 16.32 kWh

Rolling-contact and journal bearings are widely used in mechanical systems for efficient and safe operations. The importance of lubrication in these bearings cannot be overstated, as it reduces friction between the surfaces and minimizes wear and tear. This ensures that the bearings function optimally.

A literature review is a comprehensive analysis of literature or research publications that relate to a specific topic or question. In this case, we are reviewing published research and literature on the importance of lubrication in rolling-contact and journal bearings.

Lubrication plays a crucial role in the functioning of rolling-contact and journal bearings. Some of the essential functions of lubrication include reducing friction between surfaces in contact, minimizing heat generated by friction and reducing the chances of overheating, providing a layer of protection against corrosion and rust, and acting as a coolant for bearings that generate a lot of heat.

Bearing lubricants should have specific physical and chemical characteristics depending on the application. For instance, transmission fluids should have a high viscosity to provide the necessary lubrication and protect the gears from wear and tear. They should also have excellent thermal stability to perform effectively at high temperatures and prevent the formation of sludge and other deposits.

Engine oils should have excellent anti-wear additives that reduce wear and tear on engine components. They should also have good detergency to keep the engine clean and prevent the formation of deposits. Additionally, they should have low volatility to prevent excessive oil consumption and reduce emissions.

For marine or offshore applications, lubricants should have good water separation properties to prevent the formation of rust and other deposits. They should also have good rust protection properties and be biodegradable to minimize the impact on the environment.

In summary, lubrication is vital for the efficient and safe functioning of rolling-contact and journal bearings. Lubricants should have specific characteristics depending on the application, and a literature review can provide valuable insights into the importance of lubrication in these bearings.

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Answer:

the answer is Letter C

Explanation:

DON'T TRULY TRUST ME PLEASE..