Leaching is used in industries to separate a metal from its ore using acid and preserving desirable products such as gold. Thus option C is the correct answer.
What is a metal?A material that quickly releases electrons to produce positive ions and has good electrical conductivity, luster, and flexibility is referred to as metal.
A chemical is extracted from a solid material that has made contact with a liquid during the leaching process. While certain chlorides are dissolved in sodium chloride solution, precious metals like gold are dissolved in cyanide solutions.
Therefore, option C separation of a metal from its ore using acid and preserving desirable products such as gold is the appropriate answer.
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8) Microsoft Windows is
A. the most popular computer OS
B. a system software that manages computer
C. a collection of computer programs or applications along with its related data
The elbow joint is designed to allow flexing (bending) and extension (straightening) of the forearm. What specific structural combination at the elbow joint prevents it from hyperextension (bending backward)
The specific structural combination at the elbow joint that prevents it from hyperextension is olecranon process and olecranon fossa on humerus.
What is olecranon process?
Olecranon process of the ulna forms the outer bump of the elbow and fits into the fossa of the humerus when the arm is extended.
What is olecranon fossa on humerus?The olecranon fossa is a deep triangular depression on the posterior side of the humerus, superior to the trochlea.
It provides space for the olecranon of the ulna during extension of the forearm.
Thus, the specific structural combination at the elbow joint that prevents it from hyperextension is olecranon process and olecranon fossa on humerus.
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Suppose that out of 500 lottery tickets sold, 200pay off at least the cost of the ticket. Now supposethat you buy 5 tickets. Find the probability that youwill win back at least the cost of 3 tickets.
The probability that one will win back at least the cost of three tickets is approximately 0.31744. This is solved using Binomial Distribution Model.
What is the Binomial Distribution Model?
The Binomial Distribution Model is a mathematical model of probability that allows one to decipher the probability of success of a group of possibilities within a range of specifically repeated processes.
What is the calculation for the above?Given that non-losing tickets (n) is: 5
Tickets gotten with non-losing probability p = 2/5 = 0.4
Note that probability here is given as:
Pr [X ≥ 3] = [tex]\sum_{x=3}^{5}.[/tex][tex]\binom{n}{x}[/tex] pˣ (1-p)ⁿ⁻ˣ
→ [tex]\sum_{x=3}^{5}.[/tex][tex]\binom{n}{x}[/tex] (0.4)ˣ (0.6)⁵⁻ˣ
= 992/3125
= 0.31744
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Hydraulic vane phaser
Answer:
Vane pumps are hydraulic pumps that operate at very low noise levels. Hydraulic vane pumps operate with much lower flow pulsation, i.e. constant flow. As such, vane pumps produce less noise while maintaining a relatively high speed of up to 3,000 rpm.
Explanation:
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name the three exposure techniques in photolithography. what are the alternatives to photolithography in ic processing?
The three exposure techniques in photolithography are:
ContactProximityProjectionAlternatives to photolithography in IC processing include;
X-rayUVIon, andElectron lithographyWhat is Photolithography?Photolithography is a term in integrated circuit development that describes the patterned films that are formed when a beam of light falls on a substance.
This phenomenon protects the surface of sensitive materials such as glass during some operations like etching. UV and X-rays can be used for this purpose.
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Show that the locus of poles of ButterWorth low pass filter gives a circle.
Explanation:
1 answer
The area of triangle with vertices A(0, 9), B(0, 4) and C( - 5, - 9) is
Answer:
It gives a circle
Explanation:
____ lanes give drivers the time and space to reduce their speed to what is posted and/or prepare for the sharpness of the curve
Exit lanes give drivers an ample time and space to minimize (reduce) their speed to what is posted and prepare them for the sharpness of the curve.
What is a speed limit?A speed limit is the maximum amount of speed that is legally permitted in an area for safety. Hence, this limit must be abided and strictly adhered to by all road users such as drivers of a vehicle.
As a safety precaution, Exit lanes are constructed to give drivers an ample time and space to minimize (reduce) their speed to the required speed limit posted and prepare them for the sharpness of the curve.
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List three types of gears
Answer:
Parallel Axes / Spur Gear, Helical Gear, Gear Rack, Internal Gear.Intersecting Axes / Miter Gear, Straight Bevel Gear, Spiral Bevel Gear.Nonparallel, Nonintersecting Axes / Screw Gear, Worm, Worm Gear (Worm Wheel)
T/f: single-strand (or solid) aluminum branch circuit wiring observed by a home inspector should always be fully evaluated by a licensed electrical contractor.
The statement "Single-strand (or solid) aluminum branch circuit wiring observed by a home inspector should always be fully evaluated by a licensed electrical contractor" is definitely true.
What is an Electrical Circuit?An electrical circuit may be defined as a complete path through which an electric current continuously flows when the switch is in on state. It is an enclosed system of current flowing.
The quality of each and every wire does not matter if it is made up of aluminum or copper should be monitored by a high level of engineers and then a license has to be issued to that wiring company on the behalf of an electrical contractor.
Therefore, it is well described above.
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A structural member that has a straight longitudinal axis and constant cross section is best described as _______.
a set of several wires wrapped in tape or enclosed in a plastic sheath is referred to as
Answer:
A. Wire Harness
In a hydraulic system a reservoir baffle prevents the hydraulic oil from moving directly from the system return line to the pump ____ line.
In a hydraulic system a reservoir baffle prevents the hydraulic oil from moving directly from the system return line to the pump suction line.
What is a hydraulic system?It should be noted that a hydraulic system simply means a mechanical function that operates through the force of liquid pressure.
In this case, in a hydraulic system a reservoir baffle prevents the hydraulic oil from moving directly from the system return line to the pump suction line.
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Automatic cutting requires a(n) ______ or a(n)______to control the operation.
Automatic cutting requires a controller or a computer to control the operation.
What is an Automatic Cutting Equipment?Automatic Cutting Equipment is the machine that is computerized which is used for cutting the roll materials as well as the other materials in the plates.
The Automatic cutting machine requires the a controller or the computer to cut the materials which does not requires the adjustment of the material as it is automatic.
The speed of the computer or the controller is organized in the manner that works at the speed of the torch.
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Silicon chips are used primarily in ?
Answer:
4th generation computers
Silicon chips are used primarily in relays. The correct option is B.
What are silicon chips?The brain of the device is made up of silicon chips, which control all of its internal mechanisms. Tablets, smartphones, and laptops are a few examples.
The invention of silicon chips led to the revolutionization and miniaturization of technology, as well as the creation of the contemporary computer.
Instead of the slow computers that used to take up entire rooms, it made it possible to create fast computers that fit in people's homes and eventually portable computers.
Relays are electrically powered switches that operate by receiving electrical signals from other sources to open and close circuits.
Therefore, the correct option is B. relays.
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The question is incomplete. Your most probably complete question is given below:
A. integrated circuits
B. relays
C. motors
D. transformers
Describe four general methods used for securing an adaptor fitting when attaching hydraulic conductors to fittings and major system components.
The general methods used for securing an adaptor fitting when attaching hydraulic conductors to fittings and major system components are straight, pipe, flange, and flared.
What is a conductor?It should be noted that a conductor simply means a material that allows electricity to flow through it.
In this case, the general methods used for securing an adaptor fitting when attaching hydraulic conductors to fittings and major system components are straight, pipe, flange, and flared
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Chemicals pose a variety of hazards. Name six (6) types of health hazards.
Chemicals pose a variety of hazards the six (6) types of health hazards are Corrosives, Irritants, Sensitizers, Carcinogens, Mutagens,Flammable.
How do you become aware of chemical dangers?To become aware of if a substance is dangerous, test the product's box label and/or the SDS that is to be had from the supplier. If a product isn't categorized as a dangerous chemical beneathneath the Work Health and Safety Act 2011, a SDS isn't required and consequently might not be availableIn the workplace, we discover varieties of chemical dangers: fitness dangers and physicochemical dangers.1Asphyxiants.
There are many varieties of dangerous chemicals, such as neurotoxins, immune agents, dermatologic agents, carcinogens, reproductive toxins, systemic toxins, asthmagens, pneumoconiotic agents, and sensitizers.
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What part connect to the tie rod that helps the brake chamber out that deals with slack adjuster
Answer:
none
Explanation:
Transformation is the change of one energy form to another.
O True
O False
what's the voltage supplied to the light fixtures in the communication room of the manufacturing facility?
a.208V
b.120V
c.277V
d.480V
The voltage supplied in the communication room to the light fixtures can be 120 volts or 277 volts respectively.
Options B and C are the correct answers.
What is voltage?
Voltage is the electric force that makes the charges move which creates an electric current.
The light fixtures are the component of light that is being attached to the wall or a ceiling that holds any kind of lighting element. For instance, the holder of a bulb in which it is fixed is treated as a light fixture. The general voltage produces by a light fixture is 120 volts but preferable should be at 277 volts.
Therefore, all the volts except which is mentioned in options A and D cannot correspond to the voltage of light fixtures.
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When starting a vehicle with an automatic transmission, be sure the gear selector is set in (P)ark or ________.
When starting a vehicle with an automatic transmission, be sure the gear selector is set in (P)ark or (D)rive.
What are automatic cars?Automatic cars are those who have automatic options for shifting of gears. We do not have to adjust the gears by ourselves.
These cars have mode of Park, if we are moving the car, to start the car we must change it from Park to drive mode.
Thus, the fill the blank is Drive.
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A fully charged new battery will have a low conductance reading.
No it will have high conductance
Tech A says that the angle of the rear axle assembly companion flange should be perpendicular to the transmission output shaft. Tech B says that U-joints should be 45 degrees out of phase from one another to minimize vibration. Who is correct
The technician that's correct is technician A.
Who is a technician?It should be noted that a technician is an individual who looks after the technical equipment in a company.
In this case, Tech A says that the angle of the rear axle assembly companion flange should be perpendicular to the transmission output shaft. This is correct.
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Suppose that the weights for newborn kittens are normally distributed with a mean of 125 grams and a standard deviation of 15 grams. Determine the following. You must show your work or explain the reasoning or process you used to arrive at your answers. Please circle or highlight your final answers.
a. If a kitten weighs 99 grams at birth, what percentile of the weight distribution is it in?
b. How heavy must a kitten be, at a minimum, to be in the 90 th percentile (i.e. 90% of kittens weigh less than this amount)?
(a) If a kitten weighs 99 grams at birth, it is at 5.72 percentile of the weight distribution.
(b) For a kitten to be at 90th percentile, the minimum weight is 146.45 g.
Weight distribution of the kittenIn a normal distribution curve;
2 standard deviation (2d) below the mean (M), (M - 2d) is at 2%1 standard deviation (d) below the mean (M), (M - d) is at 16 %1 standard deviation (d) above the mean (M), (M + d) is at 84%2 standard deviation (2d) above the mean (M), (M + 2d) is at 98%M - 2d = 125 g - 2(15g) = 95 g
M - d = 125 g - 15 g = 110 g
95 g is at 2% and 110 g is at 16%
(16% - 2%) = 14%
(110 - 95) = 15 g
14% / 15g = 0.93%/g
From 95 g to 99 g:
99 g - 95 g = 4 g
4g x 0.93%/g = 3.72%
99 g will be at:
(2% + 3.72%) = 5.72%
Thus, if a kitten weighs 99 grams at birth, it is at 5.72 percentile of the weight distribution.
Weight of the kitten in the 90th percentileM + d = 125 + 15 = 140 g (at 84%)
M + 2d = 125 + 2(15) = 155 g ( at 98%)
155 g - 140 g = 15 g
14% / 15g = 0.93%/g
84% + x(0.93%/g) = 90%
84 + 0.93x = 90
0.93x = 6
x = 6.45 g
weight of a kitten in 90th percentile = 140 g + 6.45 g = 146.45 g
Thus, for a kitten to be at 90th percentile, the approximate weight is 146.45 g
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5. A 15-nC point charge is at the origin in free space. Calculate V₁ if point P, is located at
P₁(-2,3,-1) and
(a) V0 at (6,5,4).
(b) V-0 at infinity.
(c) V5 V at (2,0,4).
Refrigerant 134a passes through a throttle valve as part of a refrigeration cycle. The fluid enters the valve as compressed liquid at a pressure of 0.8 MPa and a temperature of 25 C. It exits the valve at -20 C. Find the exit pressure and the exit specific internal energy.
The exit pressure will be 1.3273 bar = 0.1327 MPa and the exit specific internal energy 228.61 KJ/Kg .
1.) In graph,
1-2 = Compressor
3-4 = Throttle value
[tex]T_{1} \\[/tex] = [tex]T_{4}[/tex] = -20°C = 253 K
[tex]T_{3}[/tex] = 25°C = 298 K
[tex]P_{3}[/tex] = 0.8 MPa
Assuming saturated fluid is entering the value at point (3),
using table of R-134a properties
∵ [tex]h_{3} =h_{4}[/tex] = 234.49 KJ/Kg (at 25°C,8 bar)
at [tex]T_{3}[/tex] = 25° , [tex]P_{3}[/tex] = 0.8 MPa =8 bar
At -20°C, [tex]hf_{4}[/tex] = 173.6 KJ/Kg
[tex]hg_{4}[/tex] = 386.6 KJ/Kg
[tex]h_{4} = hf_{3} + n_{4} ( hg_{4} - hf_{4} )[/tex] = 234.49
173.6 + [tex]n_{4}[/tex] [386.6 - 173.6] = 234.49
[tex]n_{4}[/tex] = 0.285
[tex]P_{4} = P_{1} = P_{sat}[/tex] = 1.3273 bar = 0.1327 MPa
2.)
Exit specific internal energy, using table R-134a
[tex]U_{4} = uf_{4} + n_{4} (ug_{4} - uf_{4} )[/tex]
at -20°c, [tex]uf_{4}\\[/tex] = 173.65, ufg = 192.85 KJ/ Kg
[tex]U_{4}[/tex] = 173.65 + 0.285 (192.85)
[tex]U_{4}[/tex] = 228.61 KJ/Kg
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A 7-hp (shaft) pump is used to raise water to an elevation of 15 m. If the mechanical efficiency of the pump is 82 percent, determine the maximum volume flow rate of water.
The maximum volume flow rate of water is determined as 0.029 m³/s.
Power of the pump
The power of the pump is watt is calculated as follows;
1 hp = 745.69 W
7 hp = ?
= 7 x 745.69 W
= 5,219.83 W
Mass flow rate of waterη = mgh/P
mgh = ηP
m = ηP/gh
m = (0.82 x 5,219.83)/(9.8 x 15)
m = 29.12 kg/s
Maximum volume rateV = m/ρ
where;
ρ is density of water = 1000 kg/m³V = (29.12)/(1000)
V = 0.029 m³/s
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. In the counter-current heat exchanger, the liquid food is cooled from 73°C to 38°C at the rate of 2500 kg h', using water at 15°C which leaves the heat exchanger at 40°C. The pipework 2.5cm in diameter is constructed from stainless steel 3mm thick; the surface film heat transfer coefficients are 1200 Wm³K on the liquid food side and 3000Wm³K-¹ on the water side of the pipe. Calculate the Overall heat transfer coefficient and the length of pipe required (Note: specific heat of water and liquid food is 4.18 kj/kg°C and 3.17 kj/kg C respectively) (6marks).
The Overall heat transfer coefficient and the length of pipe required was 9.48x10 J and the length of pipe required is 57m.
What is the supposed via way of means of heat transfer?Warmness transfer, all or any of numerous forms of phenomena, taken into consideration as mechanisms, that deliver power and entropy from one place to another. The unique mechanisms are commonly known as convection, thermal radiation, and conduction.
1/U= 1/ha+x/k+1/hk=1/1200+3/21+1/3000= 1.31 x 10^-3.Now U= 763.6 Wm^-2-C-1.To length of pipe required= Q = UAdelta m.= A=3.142xDl= l =4.48/3.142x0.025=57 m.Read more about the length :
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You should have at least a ___ mph speed advantage when passing another vehicle
A driver should have at least a 10 mph speed advantage when overtaking (passing) another vehicle.
What is a speed limit?A speed limit refers to the maximum amount of speed that is legally permitted or allowed in a specific area for safety. Thus, this limit must be abided and strictly adhered to by all road users such as drivers of a vehicle.
According to the highway traffic code and regulations, a driver should have at least a 10 mph speed advantage when overtaking (passing) another vehicle.
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A prairie house built by Frank Lloyd Wright. The house has rectangular angles, close to the ground, and a bank of windows. The building is made of brick. The house above has an overall __________ emphasis. a. vertical b. horizontal c. diagonal
The house has an overall horizontal emphasis.
What is emphasis?Emphasis in architecture is the strategy that is used to draw the viewer's attention to a design.
Here, the house has rectangular angles, close to the ground, and a bank of windows. This depicts a horizontal axis.
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what is the last item on the vehicle starting checklist
The last item on the vehicle starting checklist before a driver begins to travel is for the driver to release the service brake.
What does it mean to release the brake?The Release Parking Brake message implies that your parking brake is said to be currently engaged and as such one needs to release the parking brake before one can be able to drive the vehicle.
Therefore, The last item on the vehicle starting checklist before a driver begins to travel is for the driver to release the service brake.
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what is the last item on the vehicle starting checklist before a driver begins to travel?
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