Note that the Skier's acceleration if friction is near zero is 4.14m/s, while her acceleration if friction is 45.0N is 3.39m/s.
What is acceleration?In mechanics, acceleration is defined as the rate of change of an object's velocity with respect to time. Vector quantities are accelerations. The orientation of an object's acceleration is determined by the orientation of its net force.
The change in velocity (v) over the change in time (t) is expressed by the equation a = v/t. This enables you to calculate how quickly velocity varies in meters per second squared (m/s²).
To arrive at the above values, note that we are given:
Mass = 60Kg
Friction = 45N
The formula for acceleration used here is:
a = g x sinθ. where
a = acceleration
g = gravity constant and
Sinθ is the angle of incline.
This is because acceleration is directly proportional to the sine of the incline angle (θ), When sinθ is 1, the angle of the incline is 90°. Incline here accounts for the incline of the skier's body as she descends.
Hence:
a = 9.8 x sin25°
a = 9.8 x 0.422
a = 4.14m/s where friction is negligible.
B)
Where friction is 45.0N, we must use the following formula to account for same:
a = g x sinθ - (f/m);
Where f is friction (45.0N) and
m is mass (60kg)
substituting the values we have:
a = 9.8 x sin 25° - (45/60)
a = 9.8 x 0.422 - 0.75
a = 4.14 - 0.75
a = 3.39 (m/s)
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which type of drawing commonly describes hydraulic and pneumatic circuits electrical power and fluid flow
The type of drawing commonly describes hydraulic and pneumatic circuits electrical power and fluid flow is fluid power.
The technologies of hydraulics and pneumatics are referred to as fluid power. Both systems transfer electricity from one place to another using a fluid (liquid or gas). In pneumatics, the fluid is a gas, whereas in hydraulics, the fluid power is typically a liquid (oil) (usually compressed air).
Both are methods of power transmission, which is the science of transforming energy into a form that is more usable and transferring it to the locations where it is required. Electrical, mechanical, and hydraulic power are the three most popular ways to transmit power.
Although they are occasionally seen as rival technologies, there is no one type of power transmission that is ideal for all uses. In actuality, a variety of technologies are used to suit the majority of applications. However, compared to other methods, fluid power has several significant advantages.
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technician a says that a vehicle with a modified suspension may need an aftermarket kit installed to achieve the specified alignment settings. technician b says that the radar cruise control may have to be recalibrated if aligning a vehicle equipped with an electronic suspension. which technician is correct?
Both technician A and technician B are correct.
Some vehicles may require the installation of aftermarket kit alignments when the suspension is modified. This helps to properly adjust the alignment settings. Therefore, technician A is correct who states that in order to achieve the specified alignment settings, a vehicle with a modified suspension may need an aftermarket kit installed.
Alignment of vehicles done through an electronic suspension may need that recalibrated radar cruise control. Thus, technician B is also correct who says that in the alignment of a vehicle equipped with an electronic suspension, the radar cruise control may have to be recalibrated.
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a plan or series of plans showing the placement of each lighting instrument and its type, wattage, size, wiring, and color is called
a plan or series of plans showing the placement of each lighting instrument and its type, wattage, size, wiring, and color is called light plot.
What is on a light plot?Specifically for theatrical lighting designers, a light plan, lighting plot, or merely plot is a document similar to an architectural blueprint used to depict and communicate the lighting design to the director, other designers, and finally the Master Electrician and electrics team.Each fixture in the Instrument Schedule typically includes a single line of text.Other than what can be inferred from the hanging position name and fixture's sequence number, it lacks the particular fixture location information that the Light Plot has.To learn more about Light Plot refer,
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the parting line in injection molding is which one of the following: (a) the lines formed where polymer melt meets after flowing around a core in the mold, (b) the narrow gate sections where the parts are separated from the runner, (c) where the clamping unit is joined to the injection unit in the molding machine, or (d) where the two mold halves come together?
The parting line in injection molding is where the two mold halves come together
A parting line is a line that divides the cavity from the core of the mold. Similar ideas apply to separating surfaces. The core as well as the cavity of the mold block are separated by a surface known as the parting line.
In the injection molding process, the parting surface is just the mold surface that creates the separation between the two mold halves, and also the parting line is the line where the two mold halves meet.
The plastic parting line's goal is to enable the separation of the two mold halves just so the molded part could be ejected first by the ejector.
The molded part's look plus structural integrity are significantly influenced by the location of the splitting line flash.
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Part A Identify the zero-force members in the truss. (Figure 1) (Hint: Use both visual inspection and analysis.) Check all that apply. DE UAB CD O BE BC BD AE
The zero-force members in the truss are BE and BC. This is because they are the two non-collinear members.
How would you identify zero-force members in truss?You would definitely identify zero-force members in a truss by the fact that a joint has only two non-collinear members and there is no external load or support reaction at that joint, then those two members are zero-force members.
Zero-force members in a truss are the structural members that significantly support no loading but aid in the stability of the truss.
Therefore, the zero-force members in the truss are BE and BC. This is because they are the two non-collinear members.
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List 5 cutting actions of sawing machines
pls help
Thin metal blades or flexible bands with teeth on one edge, thin grinding wheels, or thin metal disks with teeth on their edges can all be used as sawing machine cutting tools.
What is sawing machine?Sawing machine is defined as a device for cutting forms out of raw material plates or cutting apart bars of material. It is used to sever material, usually wood, but occasionally metal or stone. The material is cut by pressing the toothed edge against it and pushing it swiftly forward, slowly backward, or continually forward.
Rotating blades, reciprocating blades, and circulating blades are the three basic types of power sawing machines.
Thus, thin metal blades or flexible bands with teeth on one edge, thin grinding wheels, or thin metal disks with teeth on their edges can all be used as sawing machine cutting tools.
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If a microhydro dam generates 1 mw of power, how much energy will it produce annually?.
8.76 MUs of energy will be produced yearly by the micro-hydro dam.
What is a dam?A dam is a physical obstruction that slows or restricts the flow of subsurface or seawater. Dam-created reservoirs offer freshwater for uses.
Taking into account that the micro-hydro dam produces 1 MW of power
To estimate how much energy this will yearly generate.
There is one unit of electricity per kwh ( kW hours)
A 1000 KW plant becomes a 1 MW plant.
The quantity of toward the in a day when a plant runs continuously at maximum capacity is:
24000 Kwh, approximately 24000 units, is equal to 1000 KW multiplied by 24 hours. Units made during a specific year.
When 1000 KW is multiplied by 24 hours and 365 days, the result is 8,760,000 Kwh, or 8.76 Million Units (MUs).
The micro-hydro dam will generate 8.76 MUs of energy every year.
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in an analogy between a building and a living body, is the crew installing plumbing in the building acting catabolically or anabolically? is their work exergonic or endergonic?
The correct answer is anabolically is the crew installing plumbing in the building acting and for work endergonic.
An endergonic reaction (such as photosynthesis) is a reaction that requires energy to be driven. Endergonic means absorbing energy in the form of work. The activation energy for the reaction is typically larger than the overall energy of the exergonic reaction. Endergonic reactions are nonspontaneous. anabolically marked by or promoting metabolic activity concerned with the biosynthesis of complex molecules (such as proteins or nucleic acids) : relating to, characterized by, or stimulating anabolism. anabolic agents. anabolic therapy to promote bone formation.
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technician a says that the state of charge of a nimh battery can be determined by measuring cell voltage. technician b says that many factors should be considered in determining the state of charge of a nimh battery, including temperature, output current, and cell voltage. which technician is correct?
Since technician A said that the state of charge of a NiMH battery can be determined by measuring cell voltage, the technician that is correct is: B) Technician B.
What is a charge?In Science, a charge can be defined as a fundamental, physical property of matter that governs how the particles of a substance are affected by an electromagnetic field, especially due to the presence of an electrostatic force (F).
What is a NiMH battery?NiMH battery is the short abbreviation for Nickel-metal hydride battery and it can be defined as a type of rechargeable battery which is typically used in electronic devices such as the following:
Laptop computers.Mobile phones.Camcorders or digital cameras.Generally speaking, there are several factors that must be considered in order to determine the state of charge of a Nickel-metal hydride (NiMH) battery and these include the following:
TemperatureOutput currentCell voltageIn this context, we can logically deduce that only Technician B is correct.
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Complete Question:
Technician A says that the state of charge of a NiMH battery can be determined by measuring cell voltage. Technician B says that many factors should be considered in determining the state of charge of a NiMH battery, including temperature, output current, and cell voltage. Which technician is correct?
A) Technician A
B) Technician B
C) Both Technicians
D) Neither Technician
A homogeneous 800kg bar AB is supported at either end by a cable asshown in the figure
below. Calculate the smallest area of each cable if the stress is not to exceed 90MPa in bronze and
120MPa in steel.
The smallest area of each cable if the stress is not to exceed 90MPa in bronze is 43.6 mm² and 120MPa in steel is 32.7 mm².
What is normal stress?If the direction of deformation force is perpendicular to the cross-sectional area of the body, the stress is called normal stress. Changes in wire length and body volume will be normal.
σ = P/A
Where, σ = Normal stress
P = Pressure
A = Area
1 Kg = 9.81 N
800 kg = 7848 N
Since the rod is half bronze and half steel
800 kg = 7848/2
= 3924 N
Pₙ = Fₙ = 3924 N [n = Bronze]
Pₓ = 3924 N [x = steel]
Given,
σₙ = 90MPa
σₓ = 120MPa
Aₙ = ?
Aₓ = ?
Aₙ = Pₙ/σₙ
Aₙ = 3924/90
Aₙ = 43.6 mm²
Aₓ = Pₓ/σₓ
Aₓ = 3924/120
Aₓ = 32.7 mm²
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The tactile system is the sensory system that refers to the sense of touch. Please select the best answer from the choices provided t f.
True is the correct response. The task of processing touch data from the body falls on the tactile system.
Through neurological connections to the spinal cord, brain stem, and thalamus, the body transmits tactile data to the somatosensory cortex.
The trigeminal system, which causes somatosensory feelings, and the primary olfactory system, which produces scent sensations, make up the olfactory system at the anatomical level (tactile, thermal, pain, humidity). The third component, referred to as the "vomeronasal organ," is positioned behind the nostril opening. Because the afferent nerve of the vomeronasal organ in humans stops functioning by the 18th week of fetal development, the organ stays in a primitive state.
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a 3105 aluminum plate previously cold worked 23% is 2-in thick. it is then cold worked further to 1.4 in. calculate the final elongation.
Answer:
Explanation:
x
a homeowner in raleigh, north carolina, wants to install a wind turbine in his backyard to augment electrical power from the grid. a local supplier states that the combined efficiency of their turbines is approximately 0.28. how much electrical power can this turbine generate for a wind speed of 18 m/s if the turbine blade diameter is 6 m?
Answer:
5.68ugs
Explanation:
what would be the minimum resist thickness to ensure that the top surface of the polysilicon is not damaged?
Answer:
Deflection of a beam depends on the following parameters:
1.Modulus of Elasticity of steel 200kN/sq. m
2. Moment of Inertia of the beam section
3. Effective Span of the beam
4. Applied load
Minimum thickness recommended is 6mm, from consideration of corrosion etc. however, minimum Structural steel section of thickness may be used provided they satisfy strength and durability requirements.
Semiconductor materials with band gaps greater than 3. 5 ev are considered to be a?.
The largest bandgap, often larger than 3 eV, is found in insulators due to the wide gap between the valence band and conduction band.
What is insulators ?A substance that prevents free flow of electrical current is known as an electrical insulator. The electrons in the insulator's atoms are securely bonded and immobile. Electric current is easier to conduct through semiconductors and conductors made of other materials.
An insulator can be identified by its resistivity, which is higher than that of semiconductors or conductors. Non-metals are the most prevalent examples.
Because even insulators have minute amounts of mobile charges that can convey current, there is no such thing as a perfect insulator. Additionally, when a sufficiently high voltage is supplied to the point where the electric field separates electrons from the atoms, all insulators turn into electrically conductive materials. This is referred to as an insulator's breakdown voltage.
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during this period, which value best approximates the average value of the san lorenzo river's discharge in cubic feet per second (cfs)?
The total annual discharge of the San Lorenzo River, as recorded at the stream gage near Felton, was almost 400 cubic feet per second (cfs).
ExplanationJust before the Boardwalk, the San Lorenzo River flows through the center of Santa Cruz to the Monterey Bay. Along the river in the Boardwalk and downtown regions is the San Lorenzo Riverway Trail. San Lorenzo Park is located on the northern edge of city, close to the river. In the past, logs from the Santa Cruz Mountains were transported by the river. (To the headwaters of the San Lorenzo River from Felton through a flume.) Over time, the river has receded due to increased water demand. The water moves at a rate of roughly 10 cubic feet per second in the summer. On December 23, 1955, a maximum discharge of 30,400 cubic feet per second was recorded. The Army Corps of Engineers built the current levees by 1959. They
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what material property would still cause strain in a strain gauge that is positioned perpendiclator to the direction of force if it were fully bonded in a high strain region of the sepcimen if this occurs then the set up must be calculated as a two active gauge set up will this set up continue to compensate for the environemental factor
Ductility is the material property would still cause strain in a strain gauge that is positioned. Understanding how an object responds to different forces is necessary for mechanical testing and measurement.
A material's ductility refers to its capacity to withstand plastic deformation or drawing without breaking. As a result, it provides information on how "soft" or pliable the material is. The types and concentrations of alloying elements present affect the ductility of steels in different ways. A material is said to be malleable if it is easy to hammer out a thin sheet of the material. The most malleable metal is gold. The ability of a solid material to deform when subjected to tensile stress is known as ductility.
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raising (increasing the elevation of) the outer edge of a road with respect to inner edge is known as
Superelevation is a type of infrastructure building utilized in roadway curves where the outer edge of the pavement is raised above the inner margin.
What do you mean by superelevation?Superelevation is the banking of a road along a horizontal curve to allow vehicles to pass through the curve safely, pleasantly, and at a respectable pace. Speeds rise and tighter horizontal curves necessitate a steeper superelevation rate.The pavement rotating as it approaches and passes through a horizontal curve is known as superelevation. The purpose of superelevation is to help the driver by reducing the lateral acceleration brought on by following the curve.Superelevation is a type of infrastructure building utilized in roadway curves where the outer edge of the pavement is raised above the inner margin. It's a crucial safety component in the design requirements of any road with curves and refers to a feature of the vertical alignment or "profile" of a road when examined in cross-section.To learn more about Superelevation refer to:
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briefly cite the differences between the recovery and recrystallization processes. explain the differences in grain structure for a metal that has been cold worked and one that has been cold worked and then recrystallized
While primary recrystallization proceeds discontinuously by the formation, recovery describes the gradual re-ordering and destruction of the stored dislocations.
High-angle grain boundaries that sweep the deformation substructure infrequently. After cold plastic deformation and/or during hot working, RECOVERY, RECRYSTALLIZATION, AND GRAIN GROWTH are microstructural changes that take place during annealing. Because they return the microstructural configuration to a lower energy level, these three mechanisms are commonly referred to as restoration processes. Recovery is crucial for removing internal stresses from forged, welded, and manufactured equipment without reducing the strength developed during and after use. The most crucial technique for cleaning nonvolatile organic materials is recrystallization. The process of recrystallization requires dissolving the solute, which needs to be purified, in a suitable hot solvent.
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wt steel shape is produced by cutting a wide flange beam lengthwise in half. group of answer choices true false
It is true that wt steel shape is produced by cutting a wide flange beam lengthwise in half.
A beam is a structural component that resists loads mostly applied laterally to its axis (an element designed to carry primarily axial load would be a strut or column). Its primary method of deflection is bending. Reaction forces are produced at the beam's support points as a result of the loads placed on it.
As a result of all the forces operating on the beam, internal stresses, strains, and deflections of the beam are caused by shear forces and bending moments within the beams. Beams differ from one another in terms of how they are supported, their profile (the form of their cross-section), equilibrium circumstances, length, and material.
Beams are typically used to describe structural elements in buildings or civil engineering when the beams are horizontal and support vertical loads.
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(18 pts.) a single crystal of a metal that has the bcc crystal structure is oriented such that a tensile stress is applied in the [100]. if the magnitude of this stress is 4.0 mpa, compute the resolved shear stress in the [11-1] on each of the (110), (011), and (10-1) planes. on the basis of these resolved shear stress values, which slip system(s) is (are) most favorably oriented?
Shear stress is a force that tends to distort a material by allowing it to slip along a plane or planes parallel to the applied stress.
What is shear stress?Earthquakes and the downslope movement of earth elements, the resulting shear has a significant impact on nature. Either solids or liquids can experience shear stress the latter's occurrence is correlated with fluid viscosity.
The amount of force per unit area that is perpendicular to the member's axial direction is known as shear stress. Two different types of pressures were produced on the wooden stick when you stomped on it firmly.
In actuality, shear stress is applied to something whenever it is cut. Other instances of shear stress are pressure placed on a pipeline by a fluid in motion and soil pressure put under tension by a typical load coming from above.
Therefore, Shear stress is a force that tends to distort a material by allowing it to slip along a plane or planes parallel to the applied stress.
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when conduit is not used in new residential low-voltage construction, cables can be pulled through the finished wall by the use of a . select one: a. mud ring b. closed box c. sleeve d. ceramic tube
the correct answer is option (d) ceramic tube.
A ceramic tube is most commonly used in industrial high temperature applications, and electrical and thermal insulations. Our high temperature ceramic tubes include alumina, silicon carbide, and quartz choices that have excellent thermal, anti-shock, anticorrosion, and extreme high temperature resistance properties. The uniform dimensional stability of ceramic tubing offers optimal insulation while providing reliable protection.
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in the moren corporation (a) case, we learned what important lesson when selecting professional engineering services?
Moren has experience with two of the three engineering companies: Travers & Bolton (T&B) and Crown Engineering (CE). Both have contributed significantly and satisfactorily.
The conversion of the 120 kV to 230 was already assigned to T&B, and it was suggested that a reliable engineering firm be hired to handle the conversion.Group of potential solutions It is the responsibility of procurement to ensure that the technical proficiency of those delivering engineering services satisfies the demands of their internal client. On occasion, procurement must defy internal client preferences when choosing the engineering services provider for a significant, multimillion-dollar building project.
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explain the reasons for any differences between calculated, simulated, and measured values in the output voltages of the summing and difference amplifiers.
Summing amplifiers, often referred to as voltage adders or voltage multipliers, are used in op-amp summing circuits to multiply input voltages.
When two input signals are applied to the inputs of the inverting and non-inverting terminals of an operational amplifier, the differential amplifier, a voltage subtractor circuit, generates an output voltage proportionate to the voltage difference between those two input signals.
So far, we have connected to the operational amplifier using only one of its inputs, either the "inverting" or the "non-inverting" terminal, and amplified a single input signal while connecting the other input to ground.
However, because a typical operational amplifier has two inputs—inverting and non-inverting—we can also connect signals to both of these inputs at the same time to create a Differential Amplifier, a common type of operational amplifier circuit.
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a(n) ? is any transformer in which the primary and secondary circuits have a portion of their two windings in common.
A auto transformer is any transformer in which the primary and secondary circuits have a portion of their two windings in common.
What is transformer?
A transformer is a passive part that moves electrical energy between circuits, whether they be single circuits or multiple circuits. The electromotive force (EMF) across any coils wound around the same core changes in response to changes in the current flowing through any one of the transformer's coils, which causes changes in the magnetic flux in the transformer's core. Without a metallic (conductive) connection between this same two circuits, electrical energy can be transferred between different coils. The 1831 discovery of Faraday's law of induction defines the induced voltage effect in any coil as the result of a fluctuating magnetic flux surrounding the coil.
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derive the characteristic state equations for the following components: a. a) sr latch b. b) gated d latch c. c) jk flip-flop d. d) t flip-flop
The state equations for sr latch b are S+R'Q, gated d latch is D, jk flip-flop is JQ' + K'Q and for t flip-flop T'Qn + TQn' .
What is Flip flop ?One of a flip-flop's two states corresponds to a "one," and the other state corresponds to a "zero," and it is a device that stores a single bit of data.
Signals applied to one or more control inputs and one or two outputs allow the circuit to alter state. It is the fundamental component of storage in sequential logic.
Fundamental components of digital electronics systems used in computers, communications, and many other sorts of systems include flip-flops and latches.
Common types of flip-flops are the SR (set-reset), D (data or delay), T (toggle), and JK. The so-called characteristic equation can be used to explain a type's behaviour.
t flip-flop Qn+1 = T'Qn + TQn'SR flip flop Qn+1=S+R'QJ-k flip flop Qn+ 1 = JQ' + K'QD flip flop Qn+ 1 = DTo learn more about flip flop refer :
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Have you ever prototyped an idea? How did you do it?
Yes, I have prototyped an idea.
How to prototype an idea?
STEP-1 Create Your Ideas Now: Here are some initial steps you may take to speed up the idea-generation process. Conduct in-depth research Know the market value, potential rivals, manufacturing method, and overall cost of your goods.
STEP-2 Make a Simplified Version of Your Idea: Making a straightforward representation of your idea would be the next step after conducting considerable research and settling on an idea.
STEP-3 Make a Realistic Prototype: You actually start working on your prototype at this point.
STEP-4 Develop Your Prototype Until It Is Perfect: The hardest and longest phase of them all is this one.
Hence, the prototype of an idea is given.
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A small single-cylinder, two-stroke cycle SI engine operates at 4000 rpm with a
compression ratio of 9. At this speed, the engine produces 5 kW of brake power. If
the engine is square with a total displacement volume of 150 cm3
, calculate:
1- Cylinder bore and piston stroke (mm).
2- Crank offset (mm).
3- Average piston speed (m/s).
4- Clearance volume (cm3
).
5- Brake output per total displacement (kW/liter).
6- Number of cycles performed in one second
7- Speed of rotation of the camshaft (rpm)
Which of the following methods is used to notify a provider of the denial of a claim by an insurance carrier?
A. Remittance advice
B. Coordination of benefits
C. Eligibility for insurance
D. CMS-1500 claim form
Answer:
A:Remittance advice
Explanation:
assume the skin friction drag on the airfoil is essentially that for a flat plate with the boundary layer being laminar and incompressible. what percentage of the total drag is due to skin friction?
Preliminary studies found that skin friction drag accounts for between 20 to 40% of overall drag.
Explain about the skin friction?Aerodynamic drag, which is a resistive force applied to an object moving in a fluid, includes skin friction drag.
The viscosity of a fluid as it passes across a surface is what creates skin friction. Its size is determined by the fluid's viscosity, the amount of wetted (or total) surface area in contact with it, and the degree of roughness of the surface.
Skin friction is important because it plays a role in the erosion of sediment particles from the water-bed boundary condition. Regarding the vertical mixing of the sediment over the water depth, form drag-related turbulence (separation-induced eddies, etc.) is significant.
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