1. Consider the steady flow in a water pipe joint shown in the diagram. The areas are:
A1=0.2 m², A2=0.2 m², and Az=0.15 m². In addition, Fluid is lost out of a hole at
section 4, estimated at a rate of 0.1m/s. The average speed at section 1 and 3 are
Vi=5m/s and V3=12m/s, respectively. Find the velocity at section 2. ​

Delilah's profession, focusing on the study and management of natural resources, is best described as an Ecologist. This role requires an undergraduate degree in natural science and often further specialized training, with an important emphasis on mathematics and statistics.

Delilah's job, focused on the study and management of natural resources to protect the environment, is best described as an Ecologist. Ecologists play a crucial role in understanding ecological issues, which can help meet basic human needs and inform policy decisions on environmental matters. They may work in various settings, including laboratories, universities, policy advisory roles, and on-site in natural environments. As an ecologist, Delilah would be involved in sustainable management strategies, conservation biology, and possibly working on issues concerning land ownership and its impacts on environmental policy, especially relevant to the gender gap observed in environmental management in the developing world.

To become an ecologist generally requires at least an undergraduate degree in a natural science, often followed by specialized training or an advanced degree, depending on the specific area of ecology. A strong foundation in mathematics and statistics is also essential for a career in ecology, as these skills are critical for conducting research and analyzing environmental data.

Answer:

D) all of the above

Explanation:

Answer:

Left arm because the driver seat is on the left, so it would be easier, and safer, to use your left arm.

But, if you live in an area in which the driver seat is on the right, then it would be the right arm.

The driver signal about the turn in case of tailing or not operating signal lights using his left arm. Thus, option B is correct.

The signal lights are the color indicators present at the squares and at different turns that mediates the traffic of a region by allowing  the drivers to stop and drive safely over the road.

The indicators being broken allows the vehicle to enter from any lane and thereby increases the chances of accidents. The driver in the following case must signal using their left arm. Thus, option B is correct.

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Answer:

The answer is B, as they run deep, severely lower than the surrounding land.

I hope this helps!

Answer:

It is because constraints applied automatic by the software (CAD) are supposed to control relationships and geometry between lines, arcs and circles while those manually added are supposed to control the geometry to behave in the manner the user likes the sketch to appear when drawing.

Explanation:

CAD software enables creating sketches using the program by automatic allowing geometric constraints to perform the tasks.Geometry in lines, circles, and other geometric features show collaborating relation that facilitate sketching in the program.For example, two end points appear to make lines remain perpendicular.Other geometric constraints are parallel, and equal.However, the user can manually apply geometric constraints to a sketch to force the geometry in a manner that is suitable to the sketch drawn.That is why a user must manually apply others.

The systems found on Electric car are- battery pack, Electric motors, Differentials etc.

The systems found on internal combustion vvehicles include- Engine, Flywheel, Propeller shaft, Governor, Pistons and Crankshaft among several other components.

Explanation:

Electrical cars are associated with an electric motor, battery pack and other car accessories. Their propulsive power sets them apart from conventional vehicles. They are driven by a battery pack which is rechargeable and in turn drives the electric motors connected to each of the wheels.  

These cars are also conspicuous with the absence of a propeller shaft which provides the power to conventional gasoline vehicles. Instead of the shaft, individual motors present side by the wheels drive them. Depending on the car’s drive ratio (either 2*4 or 4*4), the electric motors present them with sufficient power. Other equipment such as differentials, steering and control unit remains more or less same.

Internal Combustion car- They are the class of conventional vehicles powered by the burning of gasoline in the sealed engine of the car. They are either petrol, diesel variant or gas-powered. The working can be explained as follows-

Gasoline fuel with high calorific value burns in a controlled environment to produce gas which drives the piston which is in turn connected to the crankshaft. The crankshaft is responsible for turning the vertical motion of the piston to the rotatory motion of a ball lever.

Several mechanical components such as spark plugs, differentials, flywheel, governors etc make up for the controlled environment in which the fuel is allowed to burn.

It is going backwards fast, then it is going backwards slowly.

Explanation:

Motion is a term which is used in Physics. It is the change in the position of an object with time because of some force that is acting upon the object.

In mathematics, motion is described and defined as the and in the terms of the speed, time and the change or the displacement of an object from it's original place. This is because of the force acting upon the object.

Answer: d

Explanation:

Answer:

Tab title

Explanation:

The tab title can be defined as the title that shows up in a browser tab known as page title. The title only has texts, other tags within the texts are not considered.

Drafting has been around a long time. We can safely assume that since we’ve had a tool in our hands, we’ve been describing plans and technical representations and doodling ideas. Let’s take a closer aspect at drafting and its advance from an under-the-radar part of the method to a very developed skill set.

Explanation

•  1970s – The beginning computer-aided design systems were included in the industry. Following the design engineers tried the learning curve of using CAD, their performance and productivity went through the roof. Over time, CAD software became affordable and more user-friendly, and its fame grew.

•   1990s – CAD software was expanded further to include 3-D characteristics, and quickly the technical designs of the past enhanced increasingly simulated and accessible to engineer.

•   Present – The development of drafting has brought us to the present day, were using 3-D representations is the standard and the aim to generate full virtual prototypes.

Answer:

go on google and type NCEER book answers

No, there is no legitimate way to obtain the answers to an NCCER book test.

Attempting to acquire the answers to an NCCER book test through unauthorized means is unethical and against the rules set by the National Center for Construction Education and Research (NCCER).

The purpose of these tests is to assess the knowledge and competency of individuals in their respective trades. Obtaining the answers without studying and understanding the material undermines the integrity of the assessment process and does not contribute to genuine learning or skill development.

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Answer:

They are efficient, fast and accurate

They have large storage space

Explanation:

Computers are efficient, fast and accurate hence complex mathematical problems can be solved with several programs and software installed in a computer. Additional, storage capacity of computers are high with most recent computers having storage capacity of 1 TB

Roads that are under construction are the areas in which GPS is least reliable in giving you an accurate route.

This is referred to as global positioning system and helps to provide locations for easy navigation.

Roads which are under construction won't give an accurate route due to different diversions and obstructions present which us why option C was chosen.

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Amount of energy required = 292.6 kJ

Explanation:

Amount of energy required is given by the equation ,

Q = m × C ×ΔT

where m is the mass of the water = 2000 g

C is the specific heat of water = 4.18 J/g°C

ΔT = Temperature difference = 60 - 25 = 35 °C

Applying these values in the above equation, we will get,

Q = 2000 g × 4.18 J/g°C × 35°C

  = 292600 J

When joule is divided by 1000 we will get the amount of energy in kJ.

[tex]$ Q = \frac{292600}{1000} = 292.6 kJ[/tex]

So the energy required to raise the temperature of the water is 292.6 kJ.

Answer:

Clearly its Robin smith

Answer:

A. Ampere-Hours Rating

Explanation:

mAh is how much amperage a battery can provide for exactly 1 hour.

Answer:

5.833

Explanation:

Coefficient of Perfomance (COP) is the ratio of refrigeration effect to power input.

[tex]COP=\frac {RE}{P}[/tex] where RE is refrigeration effect and P is power input

Here, the power input is given as 30 kW

We also know that 1 ton cooling is equivalent to 3.5 kW hence for 50 tons, RE=50*3.5=175 kW

Now the [tex]COP=\frac {175}{30}=5.833[/tex]

Answer:

Peggy Annette Whitson was born February 9, 1960, Mount Ayr, Iowa, U.S.

She was the first female commander of the International Space Station.

She holds the record among American astronauts and among women for spending the most time in space, nearly 666 days.

She received a B.S. in biology and chemistry from Iowa Wesleyan College in Mount Pleasant, Iowa, in 1981 and a doctorate in biochemistry from Rice University in Houston in 1985.

She flew into space for the first time on June 5, 2002, as a flight engineer on Expedition 5 to the ISS, aboard the space shuttle Endeavour on mission STS-111.

She, from 2009 to 2012, Whitson was chief of the Astronaut Office, which oversees all NASA astronaut activities, including crew selection and training.

She was the first woman and the first civilian to hold that position.

She was sent into space 3 times.

Her total of 10 career spacewalks and their combined duration of 60 hours 21 minutes were records for a female astronaut.

She retired from NASA in 2018.

The problem is a hypergeometric distribution scenario, where we calculate the probability of a batch being rejected based on the presence of defective items in a random sample.

The question is about calculating the probability that a batch of somatropin doses gets rejected based on a quality control sampling test. To find this probability, we need to consider the number of defective samples in the batch and the number of samples taken for the test. Given that there are 11 defective doses out of 225, we can calculate the probability that none of the 15 randomly chosen samples are defective (which means the batch is accepted) and subtract this probability from 1 to get the probability of the batch being rejected (due to finding at least one defective sample in the test).

Since this is an application of hypergeometric distribution, the exact calculation requires combinatorial analysis, which would provide the probability of picking 0 defective doses in a sample of 15 from a lot of 225 doses which includes 11 defects.

Answer:

They create, improve, and protect the environment that us humans live in. They oversee the way something's may look like construction for example, they plan and then design. This can do with any type of new construction for anything. Basically, they try to help design things that can improve and protect our world and daily living.

Answer:

- Make the sketch proportional to the desired shape.

- Keep sketches simple.

- Exaggerate the geometric features of the shape.

- Draw geometry so that it does not overlap.

- Sketches should form a closed region.

Explanation:

What works for me is to just try to draw as many shapes as possible then merge them together. Hope that helps! :)

Answer:

investment 10 years from now is $1,238,000 .

Explanation:

given data

sum = $500,000

rate = 12% =0.12

total time = 10 year

solution

as present value After 2 years from now is $500,000

so time period is now = 8 year  ( 10 - 2 )

so we apply future value formula that is

Future value  = present value × [tex](1+r)^{t}[/tex]   ............1

put here value we get

Future value  = $500,000 × [tex](1+0.12)^{8}[/tex]  

Future value  = $500,000 × 2.476

Future value  = $1,238,000  

so investment 10 years from now is $1,238,000 .

The answer is choice C

Explanation:

As during construction ,the site is cleared for all debris before laying out the foundation. Even the sewer lines are dug out .

So it will be useful for the construction crews to  connect the pipes to the sewer lines before the foundation is poured.

But usually the steps take in construction activity is:- first the site is cleared for the foundation to be poured  and once the foundation wall is set , then all utilities , including plumbing and electrical activities are done.,

After this process is over, the city inspector comes to check whether the foundation has been laid down as per the code of construction.

Only after that the rest of the construction activity follows through.

During World War I, riveting remained the primary method for ship construction and repair, with no clear indication that it was replaced during the conflict. Advances post-war led to welding becoming the preferred technique due to its stronger joints and efficiencies.

During World War I, the process that began to replace riveting for ship repair was not explicitly mentioned in the provided text, indicating that riveting remained a significant method of construction and repair during this period. However, industrial and technological advancements during and following World War I led to the development and adoption of welding techniques which eventually became more prominent in shipbuilding and repair. Welding offered advantages over riveting, such as stronger joints and a reduction in labor and materials. Nevertheless, during World War I itself, the text highlights the intensive use of riveting, with contests to speed up production and techniques to ensure parts made in different locations could be assembled efficiently on site.

The contribution of riveting to shipbuilding during World War I is underscored by the record set by John Omir and the detailed planning required to assemble ships like the SS Agawam, with parts prefabricated and riveted in various locations before assembly. This period marked a significant effort to boost production in the face of enemy threats, laying the groundwork for future shifts towards welding in ship construction and repair.

Answer:

I think it's B lower sea level

Explanation:

Answer:

$1.38

Explanation:

She will spend $25 million in 3 years at 10% interest is a case of Future Value of Annuity.

Therefore,

FV = A*((1+r)^n-1)/r

Where A = 25,000,000

r=10%=0.1

n=3

FV= 25000000*((1+0.1)^3-1)/0.1

FV=25000000*(1.331-1)/0.1

FV=25000000*(0.331/0.1)

FV=25000000*3.31

FV=$82,750,000

So it is estimated that 20million cars passes through the toll per year

Therefore,

Toll per vehicle per year = 82750000/2000000

=$4.14

Toll for the duration of the project

=4.14/3 =$1.38

Answer 1:

Choosing the right polarity probably affects the quality and strength of the weld. This is why the changes in the polarity is useful in welding.

Answer 2:

There are different sizes of welding rods available in the market. the majorly used sizes are namely 6010, 6011, 6012, 6013, 7014, 7024 and 7018. The 7013 rod is used for welding low and mild alloy steel.

Answer 3:

The 4 major factors involved in stick welding to make good “consistent” bead are as follows,

Answer: 40 Ω

Explanation:

R =V/I

R= 120/3

R= 40

The resistance of a lamp that draws 3 amperes when connected to a 120volt supply is 40 ohms.

Ohm's law states that if all physical conditions and temperatures are constant, the voltage across a conductor is precisely proportional to the current flowing through it.

Given the following details,

Now, Using Ohm's law we can write,

Voltage = Current × Resistance

V = IR

R = V / I

R = 120 V / 3 ampere

R = 40 ohms

Hence, the resistance of a lamp that draws 3 amperes when connected to a 120volt supply is 40 ohms.

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Answer:

The three types of relearn procedures are auto relearn, stationary and OBD.

Explanation:

In TPMS system, after the direct service like adjustment of air pressure, tire rotation or replacement of sensors etc, is performed then maximum vehicle  often needs TPMS system relearn that needs to be performed.

For performing these relearn procedure, there are mainly three types:

After applying the relearn process, the TPMS system will again be in proper function.