very big question aa having i can't answer it
Always use needle nose pliers for prying and twisting.
Answer:
no
Explanation:
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The unit weight of soil is 17.3 KN/m3. The moisture content of this soil is 17% when the degree of saturation is 60%.
Answer:
degree of saturation at optimummoisture content is 78.1 %.
Explanation:
The maximum dry unit weight of the soilYa is 16.8kN/mThe optimum moisture content of the soilwis 17 %.The specific gravity of soil G is 2.73.Calculation:Determine the degree of saturation (S)using the relation.Yd = Gs Yw/ 1+Gsw/sHere, Yw is the unit weight of water.Substitute 16.8 kN/m' for a, 2.73 for G,9.81 kN/m' for u, and 17 % for w.16.8= 2.73x9.811/2.73x1 .4641 26.78S-1.594S =-0.4641-0.594S= -0.4641S= 0.4641S = 0.781x 100S = 78.1 %16.80.594Therefore, the degree of saturation atoptimum moisture content is 78.1 %.
Air in a large tank at 300C and 400kPa, flows through a converging diverging nozzle with throat diameter 2cm. It exits smoothly at a Mach number 2.8. According to one-dimensional isentropic theory, what is
(a) exit diameter and
(b) mass flow?
Answer:
The answer is "[tex]3.74 \ cm\ \ and \ \ 0.186 \frac{kg}{s}[/tex]"
Explanation:
Given data:
Initial temperature of tank [tex]T_1 = 300^{\circ}\ C= 573 K[/tex]
Initial pressure of tank [tex]P_1= 400 \ kPa[/tex]
Diameter of throat [tex]d* = 2 \ cm[/tex]
Mach number at exit [tex]M = 2.8[/tex]
In point a:
calculating the throat area:
[tex]A*=\frac{\pi}{4} \times d^2[/tex]
[tex]=\frac{\pi}{4} \times 2^2\\\\=\frac{\pi}{4} \times 4\\\\=3.14 \ cm^2[/tex]
Since, the Mach number at throat is approximately half the Mach number at exit.
Calculate the Mach number at throat.
[tex]M*=\frac{M}{2}\\\\=\frac{2.8}{2}\\\\=1.4[/tex]
Calculate the exit area using isentropic flow equation.
[tex]\frac{A}{A*}= (\frac{\gamma -1}{2})^{\frac{\gamma +1}{2(\gamma -1)}} (\frac{1+\frac{\gamma -1}{2} M*^2}{M*})^{\frac{\gamma +1}{2(\gamma -1)}}[/tex]
Here: [tex]\gamma[/tex] is the specific heat ratio. Substitute the values in above equation.
[tex]\frac{A}{3.14}= (\frac{1.4-1}{2})^{-\frac{1.4+1}{2(1.4 -1)}} (\frac{1+\frac{1.4-1}{2} (1.4)^2}{1.4})^{\frac{1.4+1}{2(1.4-1)}} \\\\A=\frac{\pi}{4}d^2 \\\\10.99=\frac{\pi}{4}d^2 \\\\d = 3.74 \ cm[/tex]
exit diameter is 3.74 cm
In point b:
Calculate the temperature at throat.
[tex]\frac{T*}{T}=(1+\frac{\Gamma-1}{2} M*^2)^{-1}\\\\\frac{T*}{573}=(1+\frac{1.4-1}{2} (1.4)^2)^{-1}\\\\T*=411.41 \ K[/tex]
Calculate the velocity at exit.
[tex]V*=M*\sqrt{ \gamma R T*}[/tex]
Here: R is the gas constant.
[tex]V*=1.4 \times \sqrt{1.4 \times 287 \times 411.41}\\\\=569.21 \ \frac{m}{s}[/tex]
Calculate the density of air at inlet
[tex]\rho_1 =\frac{P_1}{RT_1}\\\\=\frac{400}{ 0.287 \times 573}\\\\=2.43\ \frac{kg}{m^3}[/tex]
Calculate the density of air at throat using isentropic flow equation.
[tex]\frac{\rho}{\rho_1}=(1+\frac{\Gamma -1}{2} M*^2)^{-\frac{1}{\Gamma -1}} \\\\\frac{\rho *}{2.43}=(1+\frac{1.4-1}{2} (1.4)*^2)^{-\frac{1}{1.4-1}} \\\\\rho*= 1.045 \ \frac{kg}{m^3}[/tex]
Calculate the mass flow rate.
[tex]m= \rho* \times A* \times V*\\\\= 1.045 \times 3.14 times 10^{-4} \times 569.21\\\\= 0.186 \frac{kg}{s}[/tex]
emitter, base, and collector are the terminals of a?
Calculate the fraction of lattice sites that are Schottky defects for cesium chloride at 573 oC (this temperature is below the melting temperature (645oC)). Assume an energy for defect formation of 1.86 eV.
Answer:
[tex]2.9\times 10^{-6}[/tex]
Explanation:
[tex]Q_s[/tex] = Energy for defect formation = 1.86 eV
T = Temperature = [tex]573^{\circ}\text{C}=573+273.15=846.15\ \text{K}[/tex]
k = Boltzmann constant = [tex]8.62\times 10^{-5}\ \text{eV/K}[/tex]
The fraction of lattice sites that are Schottky defects is given by
[tex]\dfrac{N_s}{N}=e^{-\dfrac{Q_s}{2kt}}\\\Rightarrow \dfrac{N_s}{N}=e^{-\dfrac{1.86}{2\times 8.62\times 10^{-5}\times 846.15}}\\\Rightarrow \dfrac{N_s}{N}=2.9\times 10^{-6}[/tex]
The required ratio is [tex]2.9\times 10^{-6}[/tex].
Calculate the root for the following function: -26+82.3x-88x^2+45.4x^3-9x^4+0.65x^5 with a maximum number of iterations of 10 and a tolerance of 0.001 wearing a) Bisection b) Newton Raphson c) secant d) false position e) fixed point
excel
Answer:
the value of the best I love it was thinking too tough be a good night love motorcycle
As a mechanic, how will you assess the situation when the pilot insists that he wants to fly the aircraft despite giving him the advice that the aircraft is unworthy of flying?
What type of pattern should be used when tightening lug nuts?
Answer:
Cross pattern, according to the internet
Who Can Help my assignment?
Answer:
10800 second
7570.824 pint
1.111 yd
If you want to revise a sketch or a feature when using a 3D CAD program, how do you make a correction without using the undo function
Answer:
See explanation
Explanation:
Truthfully, this answer can vary depending on the CAD program you are choosing to use. Generally, you go to your model tree (this has been on the left hand side of the screen in all of the CAD software I have used) and click the sketch or feature to edit. In some programs this is a left click and in others this is a right click. When the feature is correctly selected a menu should appear with the option to edit feature/sketch/definition/etc. Select this option and you should be able to edit what you wanted to.
of the three types of hazard controls – engineering, administrative, and personal protective equipment (ppe) – ppe is the last line of defense.
Of the three types of hazard controls – engineering, administrative, and personal protective equipment (PPE) – PPE is the last line of defense: True.
What is OSHA?OSHA is simply an abbreviation for occupational safety and health administration that was created under the Occupational Safety and Health Act, so as to develop work-safety standards for workers and providing precautionary measures against all workplace hazards.
The three types of hazard controls.Generally, there are three types of hazard controls and these include the following:
Engineering Controls. Administrative Controls. Personal Protective Equipment (PPE).What is PPE?PPE is an acronym for personal protective equipment and it can be defined as a terminology that is used to denote any piece of equipment which offer protection to different parts of the body while working in a potentially hazardous environment.
Also, some examples of personal protective equipment (PPE) used to protect the different parts of the body are:
RespiratorsFace maskFace shieldGlovesBootsHelmetAccording to occupational safety and health administration (OSHA), the use of a faulty personal protective equipment (PPE) should be the last line of defense.
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Complete Question:
Of the three types of hazard controls – engineering, administrative, and personal protective equipment (PPE) – PPE is the last line of defense. True or False?
(5 points) Knowing that the ammeter must be connected in series with the circuit and the voltmeter must be connected in parallel, what does this tells you about the internal resistance of each device?
This tells us that the internal resistance of the ammeter is very low because we would not want to impede the flow of current when trying to measure current. The internal resistance of the voltmeter must be high because it is added in parallel with the circuit and if added in series, it would cause resistance and alter the voltage reading.
Help please!
Find two careers and explain why you would enjoy being in this career field.
Find two careers and explain why you would NOT enjoy being in this career field.
Note: You should have at least TWO paragraphs
helppppppp plssss Identifying job responsibilities for staff members is an example of which section of the project charter?
project requirements
project objectives
project team
project description
Using benefit-cost ratio analysis, determine which one of the three mutually exclusive alternatives should be selected. Each alternative has a 10-year useful life and 20% MARR 247 А в с First Cost $120 $340 $560 $760 Uniform Annual Beneft $40 $100 $140 $170 $0 $0 Salvage Value $40 $50 СА B Stop sharing app honorocos sharing your screen
You are working on a residential heat pump. The heat pump is connected to a
240-V, 60-Hz power line. The compressor has a current draw of 34 amperes when operating. The compressor has a power factor of 70%. The backup strip heat is
rated at 10 kW. You need to know the amount of total current draw that will occur if
the strip heat comes on while the compressor is operating.
The amount of total current draw that will occur if the strip heat comes on while the compressor is operating is 53.778 A.
How to find the total currentWe have the following details
Pe = 10 Kw
compressor current = 34A
Power factor = 70%
The voltage applied = 240 V
frequency f = 60 Hz
P = ER² / R
= 240² / 10 x 10
= 57600 / 10000
= 5.76Ω
We have El = Lr = Et
El = Lr = 240
The true power P
10 x 10³ / 240
= 41.667 A
The total current is solved by
√41.667² + 34³
= √1736.138 + 1156
= √2892.138
= 53.778 A
Hence the amount of total current draw that will occur if the strip heat comes on while the compressor is operating is 53.778 A.
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An engine with low oil pressure may have a noticeable
A parallel-plate capacitor is disconnected from a battery, and the plates are pulled a small distance further apart. Do the following quantities increase, decrease, or stay the same?.
Answer: capacitance decreases as distance increases
Explanation: when the plates on the capacitor are being pulled what happens is it will decrease in capacitance so the charge will decrease in the capacitor and because the battery is pulled away and if the plate is fully charged the capacitance as the distance increases between the plates the capacitance drops and heres something else i found on it and the capacitance
Capacitance C∝d1 when plates of a capacitor are moved farther, the capacitance decreases. After disconnecting the battery, the charge on capacitor remains constant, therefore the energy stored by capacitor U (=2Cq), increases
The hazard communication standard requires employers to do all of the following,except
Answer: All the options given regarding the hazard communication standard are correct except option D "prepare and post a list of employees who handle hazardous and toxic substances in the workplace".
The main requirements of employers that use hazardous chemicals are:
• ensure that chemicals are properly labelled.
• provide safety data sheets.
• train employees.
• create a written hazard communication program.
It should be noted that preparing and posting a list of employees who handle hazardous and toxic substances in the workplace is incorrect.
Therefore, the correct option is D.
Explanation: YW!!! please mark branlest! =^.^=
The diameter of a spherical mothball is observed to halve in 200 d. Approx, how long will it take for its remaining value to become half of its volume of 200 d
A. 67 d.
B. 169 d.
C. 250 d.
D. 260 d.
Answer:
it is B trust me I know thank yiu
what are the properties of advanced materials?
Sandpaper.
Rubble.
Pyramid.
Wrinkled.
Marbled.
Beginning with model year 2008, what type of communication protocol is required for diagnostics?
Beginning with model year 2008, Controller Area Network (CAN) is required for diagnostics.
What is diagnostics?Diagnostics are defined as the process of identifying an injury, ailment, or disease based on the symptoms and signs a person is exhibiting. In order to confirm or rule out illnesses and diseases, diagnostic tests are utilized. Before creating a treatment plan, your doctor needs particular information from a diagnostic test to make an accurate diagnosis.
The robust automotive bus standard known as a Controller Area Network (CAN) enables microcontrollers and other devices to interact with each other's applications without the need for a host computer. Devices and CAN busses are frequently found in industrial and automotive systems. Bosch created the Controller Area Network (CAN) bus, which saw its debut in manufacturing in 1991.
Thus, beginning with model year 2008, Controller Area Network (CAN) is required for diagnostics.
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Choose Odd one out of the options ?
A) PSRQ
B) SVUT
C) MNPO
D) KNML
In Biomedical engineering signals and systems, how is the fourier coefficient and the fourier transform expression written
Answer:
Fourier coefficient, Ck:
[tex]{ \rm{ c_{k}} = \int ^{ \infin} _{ - \infin } \{x(t) {e}^{jk \omega _{0} t} \} }[/tex]
Fourier transform:
[tex]{ \rm{x( \omega) = \int ^{ \infin} _{ - \infin} } \{x(t) {e}^{j \omega} t} \}[/tex]
(5 points) Which of the following circuits may not be used to determine the value of the resistor? Circle all that apply.
The circuit that may not be used to determine the value of the resistor is (Option A). See the attached image.
What is a resistor?
A resistor is a component of an electronic circuit that restricts or regulates the passage of electrical current.
Resistors can also be used to supply a fixed voltage to an active device such as a transistor.
What is the purpose of a resistor?A resistor is a two-terminal electrical component that offers resistance to current flow. Resistors are commonly employed in electrical circuits to reduce current flow, split voltages, impede transmission signals, and bias active parts.
What is a circuit?
Individual electronic components such as resistors, transistors, capacitors, inductors, and diodes are linked by electrical wires or traces through which electric current can pass to form an electronic circuit.
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Technician A says the drivetrain on a vehicle includes the steering wheel. Technician B says the drivetrain on a vehicle includes the axles and wheels. Who is correct?
Based on the information provided, Technician B is correct because the drivetrain on a vehicle includes the axles and wheels.
Who is an automotive engineer?An automotive engineer can be defined as a professional who has completed and acquired his or her bachelor's degree in mechanical engineering and has been trained on how to create designs for new automobile vehicles (cars), test prototypes, troubleshoots problems that arise, and oversees the manufacturing process.
What is a drivetrain?A drivetrain can be defined as the group of components or mechanical system that are fitted in automobile vehicles, which is designed and developed to connect the transmission to the drive axles such as:
Universal jointDriveshaft.Axles and wheelsIn this context, we can reasonably infer and logically deduce that Technician B is correct because the drivetrain on a vehicle includes the axles and wheels.
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g Clay sized particles in a river are likely to be transported as _______________________, whereas gravel sized particles are likely to be transported as _____________________. Group of answer choices suspended load; dissolved load suspended load; bed load dissolved load; suspended load dissolved load; bed load
Answer:
suspended load; bed load
Explanation:
Suspended load is those particles in a river that are transported and float between and around the middle and top of the river, they often change the color of the river through their suspension such as clay.
Bed load is those particles in a river that are transported at the river bed or floor. This is as a result of their weight. Examples are relatively big stones.
Hence, in this case, Clay sized particles in a river are likely to be transported as SUSPENDED LOAD whereas gravel-sized particles are likely to be transported as BED LOAD
I need this word meaning and definition need asap?
Answer:
1. Alleviate: to make pain/suffering less severe.
2. Strenuous: requiring much energy and effort.
3. Revolutionize: to overthrow the established government; to change fundamentally.
4. Repetitive: doing or saying the same thing multiple times.
5. Prosthetics: a device designed to replace a missing body part, or make a part work better.
6. Infrastructure: the fundamental facilities and systems serving a country, city, or another area, including the services and facilities necessary for its economy to function.
Do some research and find out whether the Pascaline calculator is a computer according to the Turing model.
No, it isn't. It can only perform basic mathematical calculations. A computer must be programmable in order to be Turing-complete.
What is Pascaline calculator?In 1642, Blaise Pascal invented the Pascal's calculator, a mechanical calculator. The laborious arithmetic calculations required by his father's work as the supervisor of taxes in Rouen inspired Pascal to create a calculator.
It must have some kind of programming language in which you can write instructions that can be followed automatically or by a human operator to perform any type of data processing.
Thus, it can be concluded that Pascaline calculator is not actually a computer according to the Turing model.
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If the total length of a measurement is 10 1/2" what is half of this length?
Answer:
13.335 CM (1 ft, 1.335 cm)
I am 80% sure this is the answer, but i am not too keen on math so if i am wrong let me know and i will try my best to fix it!
I hope this helped! Have a good day :]