A closed stationary system undergoes a process where 55 kJ of work are added to the system and 37 of heat are lost by the system. Calculate the change in the system's internal energy.

Answers

Answer 1

To calculate the change in the system's internal energy, we need to use the first law of thermodynamics, which states that the change in internal energy (ΔU) is equal to the heat added to the system (Q) minus the work done by the system (W). The change in the system's internal energy is -92 kJ.

In this case, we know that the system is closed and stationary, which means that it is not moving and there is no transfer of mass across its boundaries. Therefore, we can assume that there is no change in the system's kinetic or potential energy, and all the energy transferred is in the form of heat and work.
So, applying the first law of thermodynamics, we get:
ΔU = Q - W
ΔU = -37 kJ - (+55 kJ)
ΔU = -37 kJ - 55 kJ
ΔU = -92 kJ

Therefore, the change in the system's internal energy is -92 kJ. This means that the system lost energy during the process, which is consistent with the fact that more work was done on the system than heat was added to it.

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Related Questions

customer instructions are key to a perfect delivery. true or false

Answers

It is true that following client instructions is essential for a flawless delivery. We need 8–15 seconds for eye-lead to use REPS and Checks to remove distractions.

For the first query, "Delivery," the topic is how to satisfy clients by delivering what they have requested. Therefore, by according to the customer's instructions, we can accomplish a flawless delivery.

For the second question, REPS and check means identifying the risks, removing them, making plans, and looking for space. It also means checking for yourself, the risks, the space, and the speed.

To prevent accidents while driving, the REPS and check procedure is employed as a safety measurement. The eye-lead varies depending on the route followed, but it typically lasts between 8 and 15 seconds.

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Solve the differential equation by variation of parameters. (Use C1 and C2 as arbitrary constants.)
y'' − 16y = 16x/e^4x

Answers

Refer to the attached images. Final answer is circled.

2.35 Calculate Vo and Io in the circuit of Fig. 2.99

Answers

Vo and Io in the circuit is v^0=32V And I^0=0.8 A

Step by step explanation:

Given circuit:
Resultant equivalent resistance is                                        
R^ e q=(700||30)+(20||5)
=21+4
R^ e q=25
Total current=v/R^ e q
I=200/25
I=8A

Therefore ,Apply nodal analysis at v^ 1
v^ 0=v^1
200-V0/70+ 200-v^ 0/30=8
6000-30v^0+14000-70v^0/2100=8
20000-100v^0/2100=8
=20000-100v^0=16800
=100v^0=3200
v^0=3200/100
v^0=32V            

Apply nodal at V^ 2.
I^0=V^0-200/30+v^0/5
I^0=32-200/30+32/5
I^0=-168/30+32/5
I^0=-5.6+6.4
I^0=0.8 A


What Does Equivalent Resistance Mean?

An equivalent resistance is defined in physics as the sum of the resistances of the resistors connected in a circuit. Resistors can be wired in series or parallel. Assume that the three resistors are R1, R2, and R3.

If you connect these three resistors in series, the equivalent resistance is given by

Re = R1 + R2 + R3        

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how to make hypertension thermo fisher with thermal nuclear propulsion powered by 100 thermal nuclear reactor

Answers

Hypertension therapy and thermal nuclear propulsion are two distinct fields and they are not related. Hypertension therapy refers to the treatment and management of high blood pressure, while thermal nuclear propulsion refers to the use of nuclear energy to power vehicles, such as spacecraft.

What is the reactor about?

Thermal nuclear propulsion technology is still under development and is not yet available for commercial use. Building a thermal nuclear propulsion system would require significant resources, including the development of a suitable reactor and the design and construction of a spacecraft capable of withstanding the intense heat and radiation generated by the reactor.

It would also require compliance with a wide range of safety, environmental and regulatory standards.

Therefore, As for hypertension therapy, it is typically managed through a combination of lifestyle changes, such as diet and exercise, and medication. The specific treatment plan will depend on the individual patient's blood pressure level, overall health, and any other health conditions they may have. It is important to consult a doctor or healthcare professional for personalized treatment recommendations.

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During a construction project, engineers used explosives to excavate 140 feet of tunnel into a mountain. But because of time constraints and environmental concerns, they brought in a tunnel boring machine (tbm) to excavate the rest of the tunnel. The data table lists some observations an engineer made about the length of the tunnel after the tbm was introduced. How much of the tunnel was completed 26 days after the tbm was introduced?.

Answers

The engineer observed that the tunnel was 460 feet long 26 days after the tbm was introduced. Therefore, the tunnel was completed 460 feet - 140 feet = 320 feet after the tbm was introduced.

What is tunnel?
A tunnel is an underground or underwater passageway, typically constructed for transportation purposes. Tunnels are typically used to bypass obstacles such as mountains, rivers, or bodies of water, or to provide a secure route for transportation of goods and people. Tunnels may also be used for mining, research, or military purposes. Tunnels can be constructed using a variety of materials, including steel, reinforced concrete, rock, earth and soil. The length of a tunnel varies from a few metres to several kilometres. When constructing a tunnel, safety is of paramount importance. Special engineering techniques are used to ensure the stability of the tunnel and its construction is closely monitored and regulated. Tunnels are designed to be resistant to weather, vibration, fire, and other environmental factors.

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When mechanical work is done on a system, an increase normally occurs in its
O temperature.
O internal energy.
O both of these
O neither of these

Answers

An rise in temperature and internal energy often happens when a system is subjected to mechanical action.

It is impossible to directly quantify the internal energy of systems that are more complicated than a perfect gas. The system's internal energy is still inversely related to its temperature, though. Therefore, by keeping an eye on how the system's temperature varies, we can track changes in the system's internal energy. We may infer that the system's internal energy has grown whenever the system's temperature rises.

For the time being, let's assume that a thermometer set in a beaker of water on a hot plate registers 73.5°C, as indicated in the diagram below. Only the system's condition at that precise instant may be described by this measurement.

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2 psia is equivalent to

A. 29 in. Hg.

B. 28 in. Hg.

C. 27 in. Hg.

D. 26 in. Hg.

Answers

In order to determine absolute pressure, a complete vacuum is used. While the average atmospheric surface pressure is approximately 14.7 PSIA.

The pressure in a vessel absolutely devoid of any air molecules would be 0 PSIA. PSIA stands for absolute pounds per square inch. Absolute pressure is the pressure exerted with relation to absolute zero or vacuum. Engineering documents or P&IDs might employ PSIA. Pounds per square inch gauge is referred to as PSIG. PSIA is a word used to describe absolute pressure in PSI, which includes atmospheric pressure. "Total pressure" is another name for absolute pressure. We add 14.7 PSI since this atmospheric pressure is comparable to 14.7 PSI at sea level. Higher heights have lower atmospheric.

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ariah is walking on a boat that is sailing in the ocean. at a certain point the boat encounters a current.

Answers

Answer:42.6 km/h

Khan said so

The magnitude of the force will depend on the speed and direction of the current, as well as the size and shape of the boat.

The force will also cause the boat to experience a change in its velocity, which will affect the motion of the boat and the passengers on board. When a boat encounters a current, the boat will experience a force due to the current. This force will act on the boat in the direction of the current and will cause the boat to move in the direction of the current. The magnitude of the force will depend on the speed and direction of the current, as well as the size and shape of the boat. The force will also cause the boat to experience a change in its acceleration, which will affect the motion of the boat and the passengers on board. The acceleration of the boat will be equal to the force divided by the mass of the boat. The acceleration will cause the boat to change its velocity, which will cause the boat to move in the direction of the current. The magnitude of the velocity change will depend on the magnitude of the acceleration and the time over which the acceleration is applied.

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Ethernet standard 1000BASE-SX uses SMF and has a distance limitation of 5km. What is the bandwidth capacity of 1000BASE-SX?
Question 2 options:
A)
10Mbps
B)
100Mbps
C)
1Gbps
D)
100Gbps
E)
1000Gbps

Answers

Answer:C

Explanation:

Consider the following piece of C code:
for (j = 2; j < 1000; j++)
D[j] = D[j − 1] + D[j − 2];
The MIPS code corresponding to the above fragment is:
addiu $s2, $zero, 8000
addiu $s1, $zero, 16
loop: l.d $f0, -16($s1)
l.d $f2, -8($s1)
add.d $f4, $f0, $f2
s.d $f4, 0($s1)
addiu $s1, $s1, 8
bne $s1, $s2, loop
Re-write the assembly code above so that the loop is unrolled by 4 iterations.

Answers

CPU SS: A two-core superscalar processor with two function units that can handle out-of-order issues (FUs). On each core, only one thread can be active at once. CPU MT.

a fine-grained multithreaded processor that enables simultaneous execution of instructions from two threads (i.e., there are two functional units), but only one thread's worth of instructions can be issued at a time. CPU SMT: A SMT processor that has two functional units and supports running instructions from two threads simultaneously. Instructions from either or both threads may be sent to execute on any cycle. A high-level, all-purpose programming language is the C language. It offers a simple, reliable, and effective interface for system programming.

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A beam has the extruded cross section shown below, where t-20 mm. 5t 2t t'2t % Matlab input: t-20; Mz-1793; Find y, i.e., the signed distance from the z'-axis to the z-axis, where z is the centroidal axis of the cross section. Determine the moment of inertia I with respect to the centroidal axis z. 6 x10° mm'4 Determine the absolute value of the maximum tensile normal stress σ when the cross-section is subject to the moment M2- 1793 N. m MPa

Answers

The spreadsheet listing the pairwise distances in miles between the top 100 US cities by population may be found in the attached Distances.xlsx file.

Below is a screenshot of the spreadsheet. The city names are formatted as follows in the first row and first column: Nashville, TN is an example of a city name, comma, and capitalized state abbreviation. Keep in mind that the spreadsheet's first cell, A1, is empty. Create the get distance function, which takes two character vector inputs representing the names of two cities, as its only parameter. As an output argument called distance, the function returns the separation in between them. Get distance("Seattle, WA","Miami, FL"), for instance, should return 3723. The function returns -1 if one or both of the provided cities are not found in the file.

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In the figure, G1 is represented by which numbered part(s) of the cycle?

Answers

According to the figure, G1 is represented by parts 4, 5, and 6 numbered part(s) of the cycle.

What is numbered part?
Numbered parts
are individual parts of a larger item that are identified by a unique numerical identifier. This number can be used to easily locate and identify the part within the larger item. Numbered parts are often used in complex systems, such as machines, tools, vehicles, and buildings, where multiple components must be located and identified quickly and accurately. For example, a car engine may have hundreds of different numbered parts, each with its own unique identifier. Numbered parts also make it easier for manufacturers to track and inventory the parts used in their products. This helps them to ensure that the right parts are in place and available when they are needed.

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A bar having the cross section shown has been formed by securely bonding brass and aluminum stock. Taking h=9 mm and using the data given below, determine the largest permissible bending moment when the composite bar is bent about a horizontal axis. Brass h Aluminium 30 mm 30 min Aluminum Brass . Modulus of elasticity 70 GPa 105 GPa Allowable stress 100 MPa 160 MPa
The largest permissible bending moment is____ KN m

Answers

According to the question, the largest permissible bending moment is 1382.5 KN m.

What is bending moment?
Bending moment
is a mechanical force that causes a bending or flexing effect on a structural element such as a beam, resulting in the creation of a moment or torque about the element's neutral axis. It is calculated based on the internal forces acting on the element, such as the weight of the beam and the force of the load applied to it. Bending moment can be positive or negative, depending on the direction of the force and the location of the neutral axis.

M = (h×A×E×σ_allowable)/6

M = ((9mm×30mm×70GPa×100MPa)+(9mm×30mm×105GPa×160MPa))/6

M = 1382.5 KN m

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A burn-off tet wa performed to determine the volume fraction of
contituent in a gla-fiber-reinforced epoxy compoite. The following
obervation were made:
Weight of empty crucible = 47. 6504 g
Weight of crucible and a mall piece of compoite = 50. 1817 g
Weight of crucible and gla after the burn-off = 49. 4476 g
Calculate the weight and volume fraction of gla fiber and epoxy
rein. Aume that the denitie of the fiber and rein are 2. 5 and 1. 2
gl cm3, repectively

Answers

Volume fraction=1.175.        

Explanation:

Given:
Weight of empty crucible=47. 6504 g.
Weight of crucible and piece of composite= 50. 1817 g
Weight of crucible and glass after  burn-off = 49. 4476 g
weight and volume fraction of glass fiber and
epoxy resin=  w glass/w resin

w resin=50. 1817 g- 49. 4476 g = 0.7341 g
w glass=49. 4476 g-47. 6504 g = 1.7972 g

w fraction=1.7972 g/0.7341 g=2.448

                     
Now,
volume of glass fiber=1.7972 g/2.5g/cm^ 3
=0.7188 cm^ 3

volume of epoxy resin=0.7341 g/1.29/cm^ 3
=0.61175 cm^ 3

Volume fraction=v glass/v epoxy resin=0.7188/0.61175cm^ 3
Volume fraction=1.175.            

The volume fraction (percentage by volume) is one way to express the composition of a mixture with a dimensionless quantity; others are the mass fraction (percentage by weight) and mole fraction (percentage by moles)                    

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elivery Execution Knowledge Check Question 1 of 8. When you walk into the station at the end of your route, what should you do? Check in with your DSP and being any undeliverable packages back to the Amazon Retum to Station desk O leave the undeliverable packages with your OSP then go off duty You don't have to return to the station at the end of your day Sign out of your device and love Mark for foto up

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Answer:

ur hhbkiegtbckdj you and your family a very merry merry

When is Environmental Impact Assessment required?

Answers

Environmental Impact Assessment (EIA) is often required for significant development projects such as road construction, building construction, and industrial facility construction in order to analyze and minimize any environmental repercussions.

What is Environmental Impact Assessment?

It is to be noted that the process of determining how a project or activity will affect the environment is known as environmental impact assessment.

It assists individuals in ensuring that the project will not hurt animals, plants, or natural resources. This manner, we can be sure that the things we construct or do won't affect the world.

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Would you expect the following species in a planar conformation to be aromatic, antiaromatic, or neither?
O antiaromatic O neither aromatic nor antiaromatic O aromatic

Answers

The species are arranged in such planar manner. neither antiaromatic nor aromatic

species definition

A species is a unit of biodiversity as well as the fundamental categorization and taxonomic rank of an organism in biology. The biggest collection of creatures in which any two persons of the right sexes or mating types may conceive a fertile child, typically by sexual reproduction, is referred to as a species. A species can also be identified by its karyotype, DNA sequence, anatomy, behaviour, or ecological habitat. In addition, since fossil reproduction cannot be studied, palaeontologists employ the chronospecies idea. There are approx 8 and 8.7 million different species of eukaryotes, based on the most current accurate estimate.

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For the frame and loading shown, determine the components of all forces acting on member ABE when P = 13.8 kN. (Round the final answers to two decimal places.)

Answers

When examining a force's geometric representation or its algebraic equivalent, the components of a force can be viewed as horizontal and vertical changes.

The vertical and horizontal forces that combine to create the resulting force are represented by a force's components. A force can be broken down into two parts that are either inclined or perpendicular to one another. Two components are referred to as rectangular components when they are perpendicular to one another and as inclined components when they are inclined toward one another. Force has two parts: magnitude and direction. When examining a force's geometric representation or its algebraic equivalent, the components of a force can be viewed as horizontal and vertical changes.

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A child having a mass of 50 kg holds her legs up as shown as she swings downward from rest at ?1=30o . Her center of mass is located at point G1 (a radius of 2.8 m from the origin). When she is at the bottom position of ?=0o , she suddenly lets her legs come down, (approximately instantaneously) shifting her center of mass to position G2 (a radius of 3 m from the origin). Determine her speed in the upswing immediately following the change in the position of her center of mass. (Think about what quantity has changed now that her center of mass is further from origin.) Also find the angle ?2 to which she swings before momentarily coming to rest. Treat the child’s body as a particle. HINT: Think about this problem in 3 phases: 1) Swinging from initial position to vertical position with legs up, 2) Instantaneously bending legs while in vertical position, and 3) swinging from vertical to final position with legs bent.....Answer: v2 = 2.53 m/s, ?2=27o......Please show a clear and understandable solution

Answers

For a kid weighing 50 kg, does she hold her legs up when she swings down from rest at? 1 = 30° and Ф2 = 27°

Fint prior to = 0 T1 9V1 = T2 + V2 0 + 2.8 (1-cos30) (50) 9.81 = 1/2 (50) (50) V12 plus 0 V1 equals 2.713 m/sec

H1 = H2 \s50(2.713)(2.8) = 50 V2 (3) (3)

V2 = 2.532 =2.53 m/sec immediately following = 0, T2 +V2 = T2, V3 1/2 850(2.532)2, and 50(9/81)(3). (1-cos02)

27 degree is equal to 0.1089 = 1-cos02 2.

Children grow and develop in certain ways. They must be able to sit up on their own, for instance, before they can swings and subsequently walk. The same is true for how they master penmanship. Before the child can write, they tear, cut, and scribble on things. Before kids can hold a pencil and form readable symbols, called letters, in their hands, they must first develop the tiny muscles (fine motor muscles).

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© 2022. Grand Canyon University. All Rights Reserved.APA Activity 2: Citing PracticeCreate a reference page by citing the following sources in correct APA format. You may use your text or the GCU Library website to help you, but do not use citation generators.•A textbook: The second edition of Psychology and Your Life by Robert S. Feldman written in 2013. The publishing city is New York, New York published from McGraw Hill Companies.•Snickers commercial https://youtu.be/2rF_FRCd_LA •PBS Frontline special League of Denial •The document found at this address:http://www.eia.gov/forecasts/aeo/er/pdf/0383er(2013).pdf•The movie Silver Linings Playbook•The episode of Friends titled: The One After Joey and Rachel Kiss•The 7th edition of the APA Manual

Answers

Using APA reference style, the references is attached below from Feldman, R. S. (2013) to American Psychology Association (2020)

What is APA Reference Style

APA reference style is a style of citing sources used by the American Psychological Association. It is primarily used in the social sciences and includes guidelines for citing sources both within the text of a document and in the reference list at the end of the document. The guidelines provide a consistent way of citing sources to make it easier for readers to identify and locate the sources cited in a document.

In the given problem, if we need to write the reference using APA style, it will take this format below

Reference Page:

Feldman, R. S. (2013). Psychology and your life (2nd ed.). New York, NY: McGraw Hill Companies.

Frontline. (n.d.). League of denial. Retrieved from https://www.pbs.org/wgbh/frontline/film/league-of-denial/

Friends. (2004). The one after Joey and Rachel kiss [Television series episode]. In D. Crane, & M. Kauffman (Executive producers), Friends. Burbank, CA: Warner Bros. Television.

Silver Linings Playbook. (2012). [Motion Picture]. United States: The Weinstein Company.

U.S. Energy Information Administration. (2013). Annual energy outlook 2013 with projections to 2040. Retrieved from http://www.eia.gov/forecasts/aeo/er/pdf/0383er(2013).pdf

Snickers. (2013, April 2). You’re not you when you’re hungry [Video file]. Retrieved from https://youtu.be/2rF_FRCd_LA

American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.). doi:10.1037/0000165-000

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Why is possessing an ASE certification important to one's future as a technician?
Select one:
O a. Leads to better employment opportunities
O b. Allows the technician to transport raw materials to factories
O C.
Technicians gain firsthand experience in communicating effectively with customers in
person
O d. Leads to apprenticeship opportunities

Answers

Note that possessing an ASE Certification is crucial because; " Leads to better employment opportunities." (Option D)

What is an ASE Certification?

ASE certification, commonly known as Automobile Service Excellence, is given to an automotive mechanic who has finished the necessary training and acquired their Automotive Service Excellence Certified Master Technicians criteria.

There are 58 ASE certification examinations available, covering nearly every facet of the automobile repair and service sector.

The National Institute for Automotive Service Excellence (ASE) offers four levels of certification. They are:

ASE entry-level certification, Professional technician certification, Master technician certification, and ASE advanced level specialist certification.

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List the point coordinates for all atoms that are associated with the FCC unit cell (See Figure a) (b Figure 3.1 Face centered cubic crystal structure, (a) a hard sphere unit cell representation, (b) a reduced-sphere unit cell, and (c) an aggregate of many atoms.

Answers

The point coordinates for all atoms that are associated with the FCC unit  cell, i.e. fig b are:

bottom face: (1,0,0) (1,1,0) (0,1,0) (1/2,1/2,0)

Tope face: (0,0,1) (1,0,1) (1,1,1) (0,0,1) (1/2,1/2,1)

front and back face: (1/2,1,1/2) (1/2,0,1/2)

Left and Right face: (0,1/2,1/2) (1,1/2,1/2)

What is FCC unit  cell?

Atoms are found in an FCC unit cell at the centre of each cube's face and at each of the crystal lattice's four corners. Only half of each atom, which is located at the face centre, belongs to one particular cell and is shared by two adjacent unit cells.

A crystal lattice in an FCC unit cell contains atoms in each corner. Additionally, every cube face has an atom in the centre of it. Two next-to-one another unit cells share this face-center atom. A unit cell only contains 12 of each atom.

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What happens to the generated voltage, if a more powerful magnet is used?

1) The generated voltage gets higher
2) the generated voltage gets lower
3) the amount of voltage generated stay the same

Answers

1)The generated voltage gets higher

. There are given three numbers: A, B and C. Even if one of them equal 5 output TRUE, othewise output FALSE.​

Answers

This can be achieved through a variety of programming languages, here's an example using Python:

A = 4

B = 5

C = 6

if A == 5 or B == 5 or C == 5:

   print("TRUE")

else:

   print("FALSE")

What is a programming language?

A formal language with many instructions is referred to as a programming language. These guidelines are presented to find different outputs. Computer programs are the main use of programming languages. A set of guidelines are presented to ensure the computer's proper operation.

Programming languages are used to control the external devices. In this example, the code checks if any of the variables A, B, or C is equal to 5. If any of them are, the code will output "TRUE", otherwise it will output "FALSE".

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Classify each of the structures as statically determinate, statically indeterminate, or unstable. If indeterminate, specify the degree of indeterminacy. The supports or connections are to be assumed as stated.

Answers

The structure a) is indeterminate. The structures b, c, and d are statically indeterminate.

We know that if

r = 3n (Statically determinate)

r > 3n (Statically indeterminate)

r < 3 n (unstable)

r \geq 3n (unstable if reactions are concurrent or parallel)

where r = no.of reactions

n = no of parts

a) r = 2+2+1 = 5

n = 1, 3n = 3x1 = 3

5 > 3

Indeterminate upto 5 - 3 = 2 degrees

b) Unstable as all reactions are parallel

c) r = 3

n = 1 , 3(1) = 3

r = 3n

Statically Determinate

d) r = 2+2+2 = 6

n =2 , 3(2) = 6

r = 3n

Statically Determinate

e) Unstable as the reactions are concurrent meeting at common point

Frames can be classified by cutting closed loops and finding reactions

At each cutaway section three unknown forces are generated

b) 8 cuts are required generating 8x3 = 24 forces and 3 members

r = 24 +2+2+3 = 31

n = 3. r = 3(3) = 9

31 - 9 = 22

Indeterminate upto 22 degrees

c) 6 cuts are required generating 6x3 = 18 forces and 4 members

r = 18 + 3 + 3 = 24

n = 4 , 3(4) =12

24 - 12 = 12

Statically Indeterminate upto 12 degrees

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The bridge girder G of a bascule bridge is raised and lowered using the drive mechanism shown. If the hydraulic cylinder AB shortens at a constant rate of 0.15 m/s, determine the angular velocity of the bridge girder at the instant theta 0= 60°

Answers

According to the question, The bridge girder's angle of rotation at theta 0 = 60° is 0.18 rad/s.

What exactly is velocity?

Velocity is the direction at which an item is moving and serves as a measure of the rate at which its location is changing as seen from a certain point of view and as measured by a particular unit of time (for example, 60 km/h northbound). In kinematics, the field of classical mechanics that deals with the motion of objects, velocity is a basic idea. A physical vector quantity called velocity . It must have both a magnitude and a direction in order to be defined. Speed is the scalar absolute value (magnitude) of velocity; it is a coherent derived unit which quantity is measured in m/s (m/s or m/s1) in the SI (metric system).

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bernoulli equation cannot be applied when the flow is
1) Rotational
2) steady

Answers

Note that the Bernoulli equation cannot be applied when the flow is "Rotational" (Option 1)

What is the Bernoulli equation?

Bernoulli's equation formula represents a relationship between a fluid's pressure, kinetic energy, and gravitational potential energy in a container.

The Bernoulli equation assumes that the fluid flow is irrotational, meaning there is no net fluid flow around a closed loop. Rotational flow, also known as turbulent flow, is characterized by eddies and vortices and cannot be described using the Bernoulli equation.

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The two blocks shown are originally at rest. Neglecting the masses of the pulleys and the effect of friction in the pulleys and between the blocks and the inclines, determine (a) the acceleration of each block, (b) the tension in the cable.

Answers

The acceleration of block A is 8.4949 and block B is 4.2475 ft/s² while the tension is the cable is 121.168 lb.

What is tension?

When there are two forces acting on the ends of a cable, rope, wire, or string, it is said to be under tension. The cable has a one-direction pull along its entire length, pulling equally in both directions on objects at either end.

Tension can also be used to describe the forces that are acting on both ends of the two elements. In other words, tension's polar opposite is compression.

Physical objects must exert some force on one another in order to make contact with one another. Depending on the kind of object, each of these contact forces will be unique.

Take a section about the rope near block B and using the show datum

SB + (SB - SA) = l

2SB  - SA = l

2SB  - SA = 0

2aB - aA = 0

aA = 2aB

Take FBD of block-A

(Upward+) ∑Fₓ = mAaA

T - W[tex]_A[/tex]sin20° = mAaA

T - 200sin20° = (W[tex]_A[/tex]/g)(2aB)

T = 200sin20° + (W[tex]_A[/tex]/g)(2aB)

Take FBD of block-B;

(Downward+) ∑Fₓ = mBaB

W[tex]_B[/tex]cos20° - 2T = mAaA

300cos20° - 2(200sin20° + (W[tex]_A[/tex]/g)(2aB)) = (W[tex]_B[/tex]/g)(a[tex]_B[/tex])

300cos20° - 2(200sin20° + (200/32.2)(2aB)) = (300/32.2)(a[tex]_B[/tex])

a[tex]_B[/tex] = 4.2475 ft/s²

Acceleration of A is given as;

⇒ aA = 2aB

⇒ aA = 8.4949 ft/s²

Tension is given as;

T = 200sin20° + (200/32.2)(2(4.2475))

T = 121.168 lb

Thus, the acceleration of block A is 8.4949 and block B is 4.2475 ft/s² while the tension is the cable is 121.168 lb.

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A binary tree has L leaves and K nodes, each with two children. What is the relation of L and K ?

Option

L = K -1
L = 2K + 1
L = K - 1
There is no fixed relation between L and K

Answers

K=2*L-1 is the relationship between the number of nodes (K) and leaves (L). Therefore, L and k do not always have a stable relationship.

Number of internal nodes for L leaves = L - 1

So total nodes = 2L – 1

The following relation applies for a k-ary tree where each node has k offspring or none at all: L = (k-1)*n + 1.

where n represents the number of internal nodes and L represents the number of leaf nodes.

Every internal node will have K children since the k tree is fully developed.

A pointer to the topmost node of the tree, sometimes referred to as the "root," serves as the representation of a binary tree. The root's value is NULL if the tree is empty. The following components are present in each node of a binary tree:

Pointer to left kid in data

to the right-hand kid

Basic Binary Tree Operation:

adding a new element.

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Problem 2: When the input to a given audio amplifier is 4cos(800nt) + cos (1000nt) mV, the
measured frequency component at 1000Hz is 1V and the ratio of the frequency components at
500 Hz to that at 1000 Hz is 0.002. Represent the amplifier output-input characteristic by
Uo (t) = aqui (t) + az lu; (t) ]2.

a) Evaluate the numerical values of a1, a2 from the test data given. This type of test is known
as the intermodulation distortion test.
b) What would you expect to be magnitudes of the frequency component at 800 Hz and at
1600 Hz?

Answers

The  numerical values  of a2 = 0.002*a1 / 16

The magnitudes of the frequency component at 800 Hz and at

1600 Hz are: 4²a2cos²(800nt) and  8²a2cos²(800nt)cos²(1000nt)

What is the numerical values?

a) To evaluate the numerical values of a1 and a2, we can use the test data given. The measured frequency component at 1000 Hz is 1V, so we can set that as the value of a1cos(1000nt) in the amplifier output equation:

Uo(t) = a1cos(1000nt) + a2[4cos(800nt) + cos(1000nt)]²

The ratio of the frequency components at 500 Hz to that at 1000 Hz is 0.002, so we can use that to find the value of a2:

Uo(t) = a1cos(1000nt) + a2[4cos(800nt) + cos(1000nt)]²

= a1cos(1000nt) + a2[16cos²(800nt) + 8cos(800nt)cos(1000nt) + cos²(1000nt)]

= a1cos(1000nt) + a2(16cos²(800nt) + 8cos(800nt)cos(1000nt) + cos²(1000nt))

The frequency component at 500 Hz is the second harmonic of the 800 Hz component and is given by 16cos²(800nt), so we can compare it to the 1000 Hz component:

16cos²(800nt) = 0.002 * a1cos(1000nt)

a2 = 0.002*a1 / 16

b) Since the input to the amplifier is a sum of cosine functions with different frequencies, the output will also be a sum of cosine functions with the same frequencies, but with different amplitudes.

The 800 Hz component in the input is 4cos(800nt) and is squared in the output equation, so the 800 Hz component in the output will be 4^2a2cos^2(800nt) which is a smaller amplitude than the 800 Hz component in the input.

The 1600 Hz component in the input is created by the product of the 800 Hz component and the 1000 Hz component, which is 8cos(800nt)cos(1000nt) and is squared in the output equation. so the 1600 Hz component in the output will be 8^2a2cos^2(800nt)cos^2(1000nt) which is even smaller than the 800 Hz component in the input.

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