How can you determine the voltage required by a portable power tool?
Answers
A portable power tool, also known as a cordless tool, operates on batteries that can be recharged. Different power tools have different voltage requirements to operate properly.
Understanding the voltage requirement of a power tool is crucial to ensure its performance and longevity.There are several ways to determine the voltage required by a portable power tool, some of which are outlined below:1. Look for the voltage rating on the tool or battery: Many manufacturers print the voltage rating of the tool or battery on the product itself.
It is usually found near the model or serial number.2. Check the manual: Most power tools come with a user manual that provides information on voltage requirements, among other things. The manual is a great resource to find the voltage needed to power the tool.3. Search online: If you don't have access to the manual, you can search the internet for the voltage rating of the tool.
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Related Questions
How large a force is required to accelerate a 1300 kg car from rest to a speed of 20 m/s in a distance of 80 m?
Answers
F=m*a
F=80*20
F =1600 ans"
Answer: basically we are asked to find it's force and the formula that helps us to find force is Force= Mass× Acceleration
so let's put out the given and what we need to find
GIVEN. Solution
F=m.a
Mass= 1300. F=1300kg×20m/s
speed (Acceleration)=20m/2. F=26000Kg.m/s
Force=? F=26000N
N stands for Newton and the reason that it comes Newton is because it is the SI-unit of Force and the result of kg×m/s.
A motor hoists a 50-kg crate at constant speed to a height of h=6 m in 3 s. if the indicated power of the motor is 4 kw. Determine the motor's efficiency.
Answers
Answer:
24.52% efficiency
Explanation:
Knowns:
Mass = 50 kg
Height = 6 m
Time = 3 s
Indicated Power = 4 kW = 4000 W
Acceleration Due to Gravity = 9.81 m/s^2
Actual Power = Potential Energy / Time = mgh / t
Actual Power = (50 kg * 9.81 m/s^2 * 6 m) / 3 s = 981 W
Motor Efficiency = (Actual Power / Indicated Power) * 100 = (981 W / 4000 W) * 100 = 24.52%
(12 points) a heat exchanger is designed to cool 120 kg/min of water vapor at 2 bar and 400 oc to a saturated liquid at 100 kpa. the cooling water is taken from a local river at an inlet at 5 oc. after passing through a condenser, the temperature of the cooling water is not allowed to exceed 20 oc as regulated by the environmental codes. please determine the minimum mass flow rate of cooling water.
Answers
The minimum mass flow rate of cooling water is 66.22 kg/sec.
What is mass?
The quantity of matter in a physical body is defined as mass. It also represents the body's inertia, or resistance to acceleration whenever a net force is applied. The mass of an object dictates the strength of its gravitational attraction to certain other bodies. The kilogramme is the SI base unit of mass.
At 2bar 400° c
Specific enthalpy h₁=3276.88 k3/kg.
At 100Kpa
Saturated liquid h₂= 504.684
ΔT= 20° c
Energy balance,
AT=201 (cooly water)
Heat loss by vapour = Heat gain by water
120/60 (3276.98-504.684) = mw X4.186 (20)
mw= 66.22 kg/sec.
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One of the main functions of flaps during approach and landing is to:A. Decrease the angle of descent without increasing the airspeed. B. Permit a touchdown at a higher indicated airspeedC. Increase the angle of descent without increasing the airspeedD. Decrease the angle of descent without increasing the airspeed
Answers
Answer:
Explanation:
The answer to the question is D. Decrease the angle of descent without increasing the airspeed.
Flaps are movable surfaces on the trailing edge of the wings of an aircraft that can be extended to increase the lift coefficient of the wing, which in turn allows the aircraft to fly at a lower airspeed and a steeper angle of descent without stalling. By increasing the lift generated by the wings, flaps allow an aircraft to maintain a given angle of descent at a lower airspeed, which can be useful during approach and landing. Therefore, the main function of flaps during approach and landing is to decrease the angle of descent without increasing the airspeed.
WILL MAKE AS BRAINLEST
I answered some of them can anyone help with the rest?
1. What document granted permission to found and established the boundaries of the Georgia Colony?
The charter
2. Why was Georgia founded as a “buffer colony”?
defend the southern British colonies from Spanish Florida.
3. Why did Oglethorpe originally want to start a new colony in the New World?
He wanted to give debtors another chance at life instead of prison
4. According to the Charter of 1732, what are the three reasons for starting the colony of Georgia?
Charity Economics Defense
5. How did the relationship between Oglethorpe and Tomochichi impact the founding and establishment of the colony of Georgia?
6. Who founded the city of Savannah?
James Oglethorpe
7. Describe, in detail, how the following individuals contributed to the founding of Georgia:
Tomochichi:
Mary Musgrove:
8. What were the Salzburgers able to produce that the colonists of Savannah had trouble producing?
9. Who was the interpreter /ambassador between Oglethorpe and Tomochichi?
10. Who was the leader of the Yamacraw Indians?
11. What did the Malcontents want to happen in Georgia? (Think rules)
12. Who is credited with saving the lives of many colonists from disease (cholera) after he and his people were allowed into the colony of Georgia?
13. What type of colony was Georgia at first? Who would oversee the colony of Georgia?
14. After the Trustee Colony fell, what type of colony would Georgia become?
15. Who “ran” the colony of Georgia once it became a Royal Colony?
16. What rule did the Malcontents want to change the most?
Land
17. When the slavery ban was lifted, Georgia saw a rapid increase in what between 1750-1775?
Agraculture
18. What did the Royal Governors do that help prove they were trying to keep the settlers satisfied? (Think change in rules/laws)
19. What were the five main goods that were sold in the Georgia Colony? Remember WRIST
20. What increased dramatically after the Royal period began?
What type of shading techniques requires using the side of the pencil to add value.
Answers
Answer:
YES
Explanation:
NO
;-;
of the three types of hazard controls – engineering, administrative, and personal protective equipment (ppe) – ppe is the last line of defense.
Answers
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?
A (n) __________ sign indicates what a driver must or must not do. A. Advanced-warning B. Pavement markings C. High occupancy vehicles D. Regulatory (fill in the blank)
Answers
Answer:
A
Explanation:
A Warning a head is what they trying to say
Cellular network towers are configured in such a way so that they avoid what type of problem?
Answers
Answer:
They are configured this way to avoid overlap issues.
Explanation:
Scale of 2:1 if 1cm=5mm
Answers
Answer: 2 step by step
Explanation: ;) don't know if this helped or not
what is definition of
computational fluid Dynamics
unstructured grid
domain
geometry
Answers
This agency develops standards for pressure vessels and pressure relief valves, as well as the design, welding, and materials that may be used in pipeline construction.
Select one:
a. American Petroleum Institute
b. American Society of Mechanical Engineers
c. American Gas Association
d. National Fire Protection Association
Answers
Answer:
b. American Society of Mechanical Engineers
Explanation:
The "American Society of Mechanical Engineers" (ASME) is an organization that ensures the development of engineering fields. It is an accreditation organization that ensures parties will comply to the ASME Boiler and Pressure Vessel Code or BPVC.
The BPVC is a standard being followed by ASME in order to regulate the different pressure vessels and valves. Such standard prevents boiler explosion incidents.
T/F. when you call a string object's split method, the method extracts tokens from the string and returns them as integers.
Answers
False. when you call a string object's split method, the method extracts tokens from the string and returns them as integers.
When you call a string object's split method, the method extracts tokens from the string and returns them as strings, not integers. The split method divides a string into substrings based on a specified delimiter and returns those substrings as an array of strings. It does not perform any conversion of the extracted tokens to integers. If you want to convert the extracted tokens to integers, you would need to explicitly perform the conversion after splitting the string.
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According to the video, what talents do Biomedical Engineers need? Check all that apply.
patience
customer service skills
communication skills
problem-solving skills
ability to handle complex calculations
assertiveness
Answers
patience
problem-solving skills
ability to handle complex calculations
Explanation:
Engineering's fundamental building block is arithmetic, and biomedical engineers unquestionably require solid maths abilities. Geometry and calculus are frequently used by biomedical engineers while assessing and developing medical solutions. Thus, option A,C,D is correct.
What talents do Biomedical Engineers require?To better the lives of patients, biomedical engineers analyse challenges in biology and medicine and create solutions. A good aptitude for engineering, an imaginative spirit, and a love for working in healthcare are all required for this position. The human anatomy fascinates biomedical engineers, and they enjoy addressing problems.
No more difficult than any other type of engineer, at least. For those with a talent for engineering, this field is rigorous but rewarding, even though it is generally difficult to break into. No engineering discipline is more demanding than biomedical engineering.
Therefore, patience, problem-solving skills, ability to handle complex calculations talents do Biomedical Engineers need.
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A seven inch diameter centrifuge carries a 50 mL of blood (blood density at 0.994g/mL). If the centripetal acceleration is 64 feet per second, rotational speed is 345 rpm. Determine the centrifugal force in pound force.
Answers
Centrifugal force is the force exerted on an object moving in a circular path and directed outward from the center. In order to determine the centrifugal force in pound-force of a centrifuge carrying 50mL of blood, we will need to use the formula for centripetal force:
Centrifugal force = (mass x acceleration)/radius
Here's how to solve the problem:
First, we need to determine the mass of the blood being carried by the centrifuge. We know the volume of blood (50 mL) and the density of blood (0.994 g/mL), so we can use the formula:
mass = volume x density
mass = 50 mL x 0.994 g/mL
mass = 49.7 g
Next, we need to convert the given units to SI units (meters and seconds):
Centripetal acceleration = 64 ft/s^2
1 ft = 0.3048 m
Centripetal acceleration = 64 ft/s^2 x 0.3048 m/ft = 19.5072 m/s^2
Rotational speed = 345 rpm
1 rpm = 1/60 s
Rotational speed = 345 rpm x 1/60 s = 5.75 s^-1
Now we can use the formula to calculate centrifugal force:
Centrifugal force = (mass x acceleration)/radius
The radius of the centrifuge is half the diameter (3.5 inches or 0.0889 meters):
Centrifugal force = (49.7 g x 19.5072 m/s^2)/0.0889 m
Centrifugal force = 10,879.52 N
Finally, we need to convert Newtons to pound-force:
1 N = 0.22481 lb-f
Centrifugal force = 10,879.52 N x 0.22481 lb-f/N
Centrifugal force = 2,442.69 lb-f
Therefore, the centrifugal force in pound-force is 2,442.69 lb-f.
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The acceleration function of an object doing curvilinear motion is a = {(-0.2)i+2j+1.5k) m/s², where t is in s. If its initial velocity vo 8i m/s, and initial position is at the origin, determine the magnitude of its velocity when t = 3 s.
Answers
To solve this problem, we need to integrate the acceleration function to obtain the velocity function, and then evaluate the magnitude of the velocity at t = 3 s.
The velocity function can be obtained by integrating the acceleration function as follows:
v(t) = ∫a(t)dt
v(t) = ∫((-0.2)i+2j+1.5k)dt
v(t) = (-0.2t)i+(2t)j+(1.5t)k + C
where C is a constant of integration. To determine the value of C, we can use the initial velocity, which is given as vo = 8i m/s when t = 0 s:
v(0) = (-0.2(0))i+(2(0))j+(1.5(0))k + C = 8i
C = 8i
Therefore, the velocity function is:
v(t) = (-0.2t)i+(2t)j+(1.5t)k + 8i
Now, to determine the magnitude of the velocity at t = 3 s, we can simply evaluate the velocity function at t = 3 s and compute its magnitude:
v(3) = (-0.2(3))i+(2(3))j+(1.5(3))k + 8i
v(3) = (-0.6)i+6j+4.5k + 8i
v(3) = 7.4i+6j+4.5k
|v(3)| = sqrt((7.4)^2 + 6^2 + (4.5)^2)
|v(3)| = sqrt(102.41 + 36 + 20.25)
|v(3)| = sqrt(158.66)
|v(3)| ≈ 12.6 m/s (rounded to one decimal place)
Therefore, the magnitude of the velocity when t = 3 s is approximately 12.6 m/s.
Answer:
the magnitude of the velocity when t = 3 s is 10.54 m/s.
Explanation:
To solve this problem, we can use the following kinematic equation that relates velocity, acceleration, and time:
v = vo + at
where:
v = final velocity
vo = initial velocity
a = acceleration
t = time
First, we need to find the velocity of the object at time t = 3 s. To do this, we can substitute the given values into the kinematic equation and solve for v:
v = vo + at
v = 8i + (-0.2i+2j+1.5k) x 3
v = 8i - 0.6i + 6j + 4.5k
v = 7.4i + 6j + 4.5k
The magnitude of the velocity is given by:
|v| = sqrt(vx^2 + vy^2 + vz^2)
where:
vx, vy, vz = the x, y, and z components of the velocity vector
Substituting the values from above, we get:
|v| = sqrt((7.4)^2 + 6^2 + (4.5)^2)
|v| = sqrt(54.81 + 36 + 20.25)
|v| = sqrt(111.06)
|v| = 10.54 m/s (approx)
1/1 Four forces are exerted on the eyebolt as shown. If the net effect on the bolt is a direct pull of 1200N in the y-direction, determine the necessary values of T and 0.
Answers
We must break down the forces acting on the eyeball into their component parts to calculate the required values of T and (theta), and we must use the concept of equilibrium, which states that the net force acting on an object and net torque are both zero.
Let us examine in more detail the forces affecting the eyeball:
Tension force (T) at an angle θ with the x-axis.Vertical force \(\rm (F_1)\) of 500N acting downward in the negative y-direction.Vertical force \(\rm (F_2)\) of 800N acting downward in the negative y-direction.Vertical force \(\rm (F_3)\) of 600N acting upward in the positive y-direction.The equations for balancing in the x and y directions will now be presented as:
No pressure is acting in the x-direction, so the tension force is zero in that direction: T * cos(θ) = 0
T * sin(θ) + \(\rm F_1 + F_2 - F_3\)= 1200N (net pull force of 1200N in y-direction due to tension force in y-direction, f1, f2 and f3)
Let us now find the value of T and θ:
From the x-direction equation, we get:
T * cos(θ) = 0
T = 0
From the y-direction equation, we get:
0 + 500N + 800N - 600N = 1200N
T * sin(θ) = 1200N
T = 1200N / sin(θ)
Since T cannot be both 0 and 1200N, it implies that sin(θ) must be equal to 1:
sin(θ) = 1
To find θ, we take the inverse sine (or arcsine) of 1:
θ = arcsin(1)
The arcsine of 1 is 90 degrees or π/2 radians.
Therefore, the values are T = 1200N / sin(θ) = 1200N / 1 = 1200N and θ = 90 degrees or π/2 radians.
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It is desired to obtain 500 VAR reactive power from 230 Vrms 50 Hz 1.5 KVAR reactor. What should be the angle of the AC to AC converter to be used? Calculate the THD of the current drawn from the mains (consider up to the 12th harmonic)?
Answers
Answer:
14.5° ; THD % = 3.873 × 100 = 387.3%.
Explanation:
Okay, in this question we are given the following parameters or data or information which is going to assist us in solving the question efficiently and they are;
(1). "500 VAR reactive power from 230 Vrms 50 Hz 1.5 KVAR reactor".
(2). Consideration of up to 12th harmonic.
So, let us delve right into the solution to the question above;
Step one: Calculate the Irms and Irms(12th) by using the formula for the equation below;
Irms = reactive power /Vrms = 500/230 = 2.174 A.
Irms(12th) = 1.5 × 10^3/ 12 × 230 = 0.543 A.
Step two: Calculate the THD.
Before the Calculation of the THD, there is the need to determine the value for the dissociation factor, h.
h = Irms(12th)/Irms = 0.543/ 2.174 = 0.25.
Thus, THD = [1/ (h)^2 - 1 ] ^1/2. = 3.873.
THD % = 3.873 × 100 = 387.3%.
Step four: angle AC - Ac converter
theta = sin^-1 (1.5 × 10^3/ 12 × 500) = 14.5°.
Which alpha-numeric designator, systematically assigned at the time of manufacture, identifies the manufacturer, month, year, location, and batch?
Answers
An alpha-numeric designator which is systematically assigned at the time of manufacture, so as to identify the manufacturer, month, year, location, and batch is referred to as lot number.
What is a product?A product can be defined as any physical object (tangible item) that is typically produced by a manufacturer so as to satisfy and meet the demands, needs or wants of every customer. Also, some examples of a product include the following:
RefrigeratorTelevisionMicrowave ovenPencilSmartphoneComputerPerfumeWhat is lot number?A lot number can be defined as an alpha-numeric designator which is systematically designed and assigned at the time of manufacture, so as to identify the manufacturer, month, year, location, and batch.
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Sara is asked to create a controller for light sensors. When the light falls on the sensor, it needs to indicate when a particular object is moved from its original position. For this, she needs a credit card-sized motherboard with a microcontroller on it. Which option should she select?
a.
SoC
b.
Raspberry Pi
c.
Arduino
d.
FPGA
Answers
Arduino. It's as easy to use Arduino to blink an LED to control an AC light or appliance.
What is Arduino used for?To put it briefly, an Arduino is an open hardware development board that makers, hobbyists, and tinkerers may use to create and construct objects that interact with the physical environment.Arduino is a firm that creates and produces single-board microcontrollers and microcontroller kits for creating digital devices. It is an open-source hardware and software initiative.The circuit board of an Arduino contains a variety of parts that interface with one another. The layout has evolved through time, and some iterations now include additional components. The Arduino IDE is free software that is written in Java and may be used with Windows, Mac, and Linux computers. The IDE gives you the ability to create code in a unique environment with syntax highlighting and other features that make coding simpler, and then you can quickly load your code onto the device with just a few clicks.To learn more about microcontrollers refer :
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A fan is to be selected to ventilate a bathroom whose
dimensions are 2 m × 3 m × 3 m. The air velocity is not to
exceed 7 m/s to minimize vibration and noise. The combined
efficiency of the fan–motor unit to be used can be taken to
be 50 percent. If the fan is to replace the entire volume of air
in 15 min, determine (a) the wattage of the fan–motor unit to
be purchased, (b) the diameter of the fan casing, and (c) the
pressure difference across the fan. Take the air density to be
1.25 kg/m3
and disregard the effect of the kinetic energy correction factors.
Answers
Answer:
18 000 liters
Explanation:
Mass flow rate = volumetric flow rate x density of air at that elevation
M = 0.3m3/min x 0. 7kg/m3 = 0.21kg/min
min diameter of fan = 0.063m
the velocity V must not exceed 95m/min,
Using Q = AV
A is the surface area of the fan
Q = 0.3m3/min, from above
A = Q/V = 0.3/95 = 0.003157m2
But A = (¶d^2)/4
d^2 = 4A/¶ = 4 x 0.003157/3.142
d^2 = 0.004019
d = 0.063m
The combined efficiency of the fan–motor unit to be used can be taken to be 50 percent. If the fan is to replace the entire volume of air in 15 min, determine the wattage of the fan–motor unit to be purchased.
Mass flow rate = volumetric flow rate x density of air at that elevation
M = 0.3m3/min x 0. 7kg/m3 = 0.21kg/min
min diameter of fan = 0.063m
the velocity V must not exceed 95m/min,
Using Q = AV
A is the surface area of the fan
Q = 0.3m3/min, from above
A = Q/V = 0.3/95 = 0.003157m2
But A = (¶d^2)/4
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Determine the shearing stress for an incompressible Newtonian fluid with a velocity distribution of V = (3xy2 - 4x°)i +(12.xºy- y3)j.
Answers
The shearing stress can be calculated using the formula:
τ = μ * γ. To determine the shearing stress for an incompressible Newtonian fluid, we need to calculate the shear rate and viscosity.
Given the velocity distribution V = (3xy^2 - 4x) i + (12x - y^3) j, we can calculate the components of the velocity gradient tensor, which represents the rate of change of velocity with respect to position.
The velocity gradient tensor is defined as:
∂V/∂x = (∂u/∂x) i + (∂v/∂x) j
∂V/∂y = (∂u/∂y) i + (∂v/∂y) j
where u and v are the x and y components of the velocity, respectively.
In this case, we have:
∂u/∂x = 3y^2 - 4
∂u/∂y = 6xy
∂v/∂x = 12 - 0
∂v/∂y = -3y^2
Now, we can calculate the shear rate:
γ = √((∂u/∂x)^2 + (∂v/∂y)^2 + (∂u/∂y + ∂v/∂x)^2)
Substituting the values, we get:
γ = √((3y^2 - 4)^2 + (-3y^2)^2 + (6xy + 12)^2)
Next, we need to determine the viscosity of the fluid. Let's assume it is given as μ.
Finally, the shearing stress can be calculated using the formula:
τ = μ * γ
Substituting the values of γ and μ into the equation will give the shearing stress for the given velocity distribution.
Please note that this calculation assumes an incompressible Newtonian fluid and a linear velocity distribution. If there are any specific assumptions or conditions provided in the problem statement, please make sure to include them for a more accurate calculation.
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What are the two tools used to create an HTML code? Name one example of each tool.
Answers
Answer:
please mark me as BRAINLIEST
Explanation:
There are so many software packages available to develop HTML. The software packages can be grouped into two main categories: text-based (or code-based) editors.
...
WYSIWYG editors
Macromedia Dreamweaver.
Microsoft FrontPage.
Adobe GoLive.
t-Butly alcohol (TBA) is an important octane enhancer that is used to replace lead additives in
gasoline. t-Butyl alcohol was produced by the liquid-phase hydration (W) of isobutene (I) over
an Amberlyst-15 catalyst. The liquid is normally a multiphase mixture of hydrocarbon, water
and solid catalysts. However, the use of cosolvents or excess TBA can achieve reasonable
miscibility.
The reaction mechanism is believed to be
+ ⇌ I.S
1
+ ⇌ W.S
2
. + . ⇌ TBA.S + I.S
3
. ⇌ TBA + S
4
Derive a rate law assuming:
(a) The surface reaction is rate-limiting
(b) The adsorption of isobutene is limiting
Answers
The rate laws corresponding to the surface reactions as the rate-limiting step in the liquid phase hydration of isobutene has to be determined.
How to explain the rate lawThe rate law of the chemical reaction states that the rate of reaction is the function of the concentration of the reactants and the products present in that specific reaction. The rate is actually predicted by the slowest step of the reaction.
If there is a chemical reaction which has reactants A and B that reacts to form products then their rate law is given as follows.
r=k[A]a[B]b
Here, [A] is the concentration of the reactant A, [B] is the concentration of the reactant B and k is the rate constant.
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What is the function and role of product tear down charts, and how do engineers utilize them in the reverse engineering process?
Answers
Answer:
Product Teardown 28 pieces (1) Plastic packaging: protect and display product for purchase. (4) Exterior screws: hold case halves together. (1) Right case half: acts as part of a handle and contains the rest of the parts. (1) Left case half: acts as part of a handle and contains the rest of the parts.
Explanation:
A product teardown process is an orderly way to know about a particular product and identify its parts, system functionality to recognize modeling improvement and identify cost reduction opportunities. Unlike the traditional costing method, tear down analysis collects information to determine product quality and price desired by the consumers.
Answer:
?
Explanation:
A simple solar collector is built by placing a 5-cm- diameter clear plastic tube around a garden hose whose outer diameter is 1.6 cm. The hose is painted black to maximize solar absorption, and some plastic rings are used to keep the spacing between the hose and the clear plastic cover constant. During a clear day, the temperature of the hose is measured to be 65°C,
Answers
The energy absorbed from the solar collector is approximately 3.16 w/m
What is the Energy AbsorbedThe approximate solar energy absorbed by the collector can be calculated using the following equation:
Solar Energy Absorbed (W/m) = (Aperture Area x Solar Irradiance x Efficiency) / Hose Length
Aperture Area = π x (0.05 m)² = 0.0079 m2
Solar Irradiance = 1000 W/m²
Efficiency = (65°C - 25°C) / (100°C - 25°C) = 0.4
Hose Length = 1 m
Therefore, the approximate solar energy absorbed by the collector is:
Solar Energy Absorbed (W/m) = (0.0079 m² x 1000 W/m² x 0.4) / 1 m = 3.16 W/m
The energy absorbed is 3.16 watt per meter.
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complete question:
A simple solar collector is built by placing a 5-cm- diameter clear plastic tube around a garden hose whose outer diameter is 1.6 cm. The hose is painted black to maximize solar absorption, and some plastic rings are used to keep the spacing between the hose and the clear plastic cover constant. During a clear day, the temperature of the hose is measured to be 65°C, while the ambient temperature is 25°C. What is the approximate solar energy absorbed by the collector, in watts per meter of length of the hose?
The insulator is the connection between the grounded circuit conductor and the equipment grounding conductor at the service.
Answers
Anything you want to do in Hootsuite can be found in the ________, with the main workspace in the _________?
Settings; Streams
Sidebar; center
Header; Sidebar
Nav-panel; dashboard
Answers
Answer:
Anything you want to do in Hootsuite can be found in the ___ Sidebar_____, with the main workspace in the ___center______
Sidebar; center
Explanation:
The main workspace of the Hootsuite is located in the center. The sidebar is where the core access to the Hootsuite functionality, like Streams, Inbox, Planner, Analytics, Publisher, and the App Directory, is obtained. Hootsuite is a media management platform for curating content, scheduling posts, managing team members, and measuring performances.
if the inherent availability of a system is 0.92 when MTBF is 220 hrs, what is the maximum value of MTTR. If we consider Logistic time for support as 30% of total down time, what will be the operational availability?
Answers
The operational availability, considering the logistic time for support, is approximately 0.643 or 64.3%. We need to use the formulas related to availability and MTTR.
1. Maximum Value of MTTR:
The formula for availability is given as:
Availability = MTBF / (MTBF + MTTR)
Given that the inherent availability of the system is 0.92 and the MTBF is 220 hours, we can rearrange the formula to solve for MTTR:
0.92 = 220 / (220 + MTTR)
Solving for MTTR:
0.92 * (220 + MTTR) = 220
202.4 + 0.92 * MTTR = 220
0.92 * MTTR = 17.6
MTTR = 17.6 / 0.92
MTTR ≈ 19.13 hours
Therefore, the maximum value of MTTR is approximately 19.13 hours.
2. Operational Availability considering Logistic Time for Support:
The operational availability (Ao) can be calculated by considering both the inherent availability (Ai) and the logistic time for support (LTS) as follows:
Ao = Ai * (1 - LTS)
Given that the logistic time for support is stated as 30% of the total downtime, we can calculate it as follows:
LTS = 0.30 * (MTTR + LTS)
Simplifying the equation:
LTS = 0.30 * MTTR / (1 - 0.30)
Now, we can substitute the value of MTTR we obtained earlier:
LTS = 0.30 * 19.13 / (1 - 0.30)
LTS ≈ 0.30 * 19.13 / 0.70
LTS ≈ 8.25 hours
Finally, we can calculate the operational availability:
Ao = Ai * (1 - LTS)
Ao = 0.92 * (1 - 8.25 / (MTTR + LTS))
Ao = 0.92 * (1 - 8.25 / (19.13 + 8.25))
Ao ≈ 0.92 * (1 - 8.25 / 27.38)
Ao ≈ 0.92 * (1 - 0.301)
Ao ≈ 0.92 * 0.699
Ao ≈ 0.643
Learn more about Operational Availability here : brainly.com/question/13153184
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Rt = R1 + R2 + R3
\( \frac{1}{rt} = \frac{1}{r1} + \frac{1}{r2} + \frac{1}{r3} \)
If R1 = 4Ω , R2 = 6Ω and R3 = 8Ω (Ω= ohm)
Calculate: 4.1.1 Rt (series)
4.1.2 Rt (parallel)
Answers
Answer:
In series:
\( \frac{1}{r} = \frac{1}{r_{1} } + \frac{1}{r _{2} } + \frac{1}{r_{3} } \)
\( \frac{1}{r} = \frac{1}{4} + \frac{1}{6} + \frac{1}{8} \\ \\ \frac{1}{r} = \frac{13}{24} \\ \\ r = \frac{24}{13} \\ { \underline{r = 1.85 \: Ω}}\)
In parallel:
\(r = r _{1} + r _{2} + r _{3} \\ r = 4 + 6 + 8 \\ r = 18Ω\)
While out on the International Space Station, an engineer was able to gather a sample of a new type of unidentified rock. What knowledge will the engineer use to predict the potential of this new material?
Answers
Answer:
The engineer will conduct a variety of tests, including chemical, mechanical, electrical, and physical examinations, to determine the potential of the new material.
Explanation:
They will need to test the material, this will also help to determine its malleability.
Hope this helps!