Why do we study economics
Answer:
Because it teaches us about money and how it works
Explanation:
The purpose of lubricant is to ______.
A.Eliminate moisture
B.Save money on tools
C.Reduce friction and wear
D.Clean and maintain tools
The resultant of two forces p and q is 260N .if q is 80N and the angle between p and q is 30° find q
Answer:
256.9N
Explanation:
q is the other component of the forces when resolved using 260sin30=0
Answer:
q is already given so i assume you question is find P
p = 187.6N
Explanation:
\widehat{p\ }+ \hat{q} = \hat{R}
R = 260N
q = 80N
angle between p and q is 30°
Therefore, the angle the two vectors make to produce R is (180° – 30° = 150°) = 150°
Resolving q in x and y components = (80 cos 30)i + (80 sin 30)j
q = 69.3i + 40j
R = p + q
Let p = xi + yj
R = (xi + yj) + (69.3i + 40j)
R = 260N
Resolving R in x and y components
R = (260 cos \theta)i + (260 sin \theta)j
(260 cos \theta)i + (260 sin \theta)j = (xi + yj) + (69.3i + 40j)
(260 cos \theta)i + (260 sin \theta)j = (x + 69.3)i + (y + 40)j
Equating each component to the corresponding component
x + 69.3 = (260 cos \theta)……(i)
y + 40 = (260 sin \theta)……….(ii)
y = 0
0+ 40 = (260 sin \theta)
\theta = sin-1 (\frac{40}{260})
\theta = 8.8°
x + 69.3 = 260 cos 8.8°
x = 260 cos 8.8° - 69.3
x = 187.6i
p = 187.6N
Multi lane roads use __ to divide lanes of traffic moving in the same direction.
A. White lines
B. Yellow lines
C. Diagonal stripes
D. Orange stripes
Answer:
A. White lines
Explanation:
Multi lane roads use White lines to divide lanes of traffic moving in the same direction.
While driving, we occasionally see certain types of lines on the road.
There are various sorts of roads. There might be single lanes, double lanes, multilane lanes, etc. Similar to how the lines that we see on these lanes are different.
White broken lines are used to divide the lanes when there are several lanes travelling in the same direction, typically three or four lanes. Depending on the speed and traffic in the lanes, people can change from one lane to another.
However, there are also some locations on the highways where these crooked lines solidify, at which point it is illegal to change lanes until the crooked white lines are once again visible.
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A rectangular conductor with a cross sectional area of 1.04 square millimeters (mm) ^2 has a resistance of 0.075 ohms. What would be its resistance, if it's cross sectional area were 2.08mm^2
Answer:
0.0375 ohms
Explanation:
The resistance of a material is the product of the resistivity of the material by the length of the material divided by its cross-section area.
Mathematically,
resistance= resistivity × length/area
In this case the resistivity of the material is the same, and the length is the same thus, assume a length of 1 unit, the cross-section area is the one changing
In applying the formula,
resistivity is r and length is l=1 unit, find the resistivity the material as;
resistance= resistivity * length /area
0.075=r*1/1.04
0.075=r*0.9615
0.075/0.9615 =r
r=0.078
use the r=0.078 , a length of 1 unit (assumed), and area of 2.08 mm² to find the new resistance
Resistance= resistivity * length /area
Resistance = 0.078*1/2.08
Resistance= 0.078 * 0.4807 = 0.0375 ohms
Point to note here is that the greater the cross-section area, the less the resistance.
To ensure safe footing on penetrable surfaces,use?
a. Single support attachment
b. Stabilizer
C. Ladder leveler
d. Spur plates
Select all that apply: Contaminated sharps should
not be
----
Contaminated sharps must never be sheared or broken.
Sharps that are contaminated should never be broken or sheared. It is only acceptable to retract, bend, or remove needles when no other practical option is available or when doing so is necessary for a particular medical or dental operation.
To protect people and the environment, it is essential to dispose of contaminated sharps according to the correct procedures. Sharp objects, like lancets, scalpels, and needles, should never be thrown away in conventional trash cans after coming into touch with potentially infected items. Rather, they ought to be disposed of in containers made especially for puncture-proof sharps disposal. Usually marked as biohazardous trash, these containers need to be disposed of in accordance with local laws and regulations.
in measuring what does NEST stand for?
Answer:
national employment savings trust
Explanation:
David wants to determine what his organization should do in the future, and set project targets. Which management function can David use to do this
Answer:
Forecasting
Explanation:
Organizational forecasting is estimating of future events for the purpose of effective planning and decision making. This is one of the critical organizational functions as the forecast help managers to anticipate the future and to plan accordingly. Examples are financial forecasting, reporting, and operational metrics tracking, analyze financial data, create financial models use to predict future revenues.
The dot plot shows the number of cupcakes bought by each person who came to a bake sale.
Number of Cupcakes Bought
A dot plot going from 0 to 5. 0 has 3 dots, 1 has 8 dots, 2 has 2 dots, 3 has 5 dots, 4 has 3 dots, and 5 has 1 dot.
Which is a true statement about the dot plot?
The true statement about the dot plot is 1 has 4 and 0 dots.
Explanation:
after creating a Bar chart 4 is the right answer.The highest among st all the other plots is 1 but 4 shows 3.Taking an average from all the data points 3 comes to the right answer.Median the central Mid-point is 3.Mode also comes to 3.It is skewed on the right due to the 1st one.Skewed shows the data point either increasing or in decreasing.There a to Bi- histograms which has two ups and downs.The true statement has to be as Mean=Median=Mode is 3.Answer:
b
Explanation:
why do you think slaves traders and slave owners wanted to keep slaves uneducated?
An advantage presented by Straight in space is that___.
Which examples demonstrate tasks commonly performed in Maintenance/Operations jobs? Check all that apply.
1. Ross fixes a dishwasher for a homeowner.
2. Beverly operates heating and air-conditioning equipment in an office building.
3. Cassandra fixes holes in an old road.
4. Ines sketches a design for a building plan.
5. Tyrone oversees other workers on a construction site for a new store.
6. Freddie greets customers at an architecture firm.
Answer:
1, 2, 3
Explanation:
Ross fixes a dishwasher for a homeowner.
Beverly operates heating and air-conditioning equipment in an office building.
Cassandra fixes holes in an old road.
Answer:
1,2,3
Explanation:
i did the test :)
Which of the following supports the idea of establishing justice?
A. raising an army and a navy
B. collecting taxes
c. forming a judicial branch
D. regulating commerce
Answer:
C
Explanation:
Working as a team to design a skyscraper would most satisfy which of these personal benefits of work? for odyssey
1.a want
2.being with others
3.feeling respected
4.earning money
Answer:
The answer for Odyssey is B: Being with others.
Explanation:
Answer:
The answer to this question is:
Being With Others
What’s a pnp transitor?
Answer:
PnP transistor is a current controlled device. It has two crystal diodes connected back to back. The left side of the diode is known as the emitter-base diode and the other side which is the right side of the diode is known as the collector-base diode.
Answer:
A transistor is of two types: PNP and NPN
Explanation:
A transistor is current controlled device in which the current flow by the movement of the electrons and wholes.
The NPN and PNP transistor are the types of the BJT (Bipolar junction transistor) that have two uses i.e switching and amplification.
A PNP transistor have three junction i.e P, N and P where the base is connected to the N - junction. The P junction is high in number of wholes and N- junction have high numbers of electrons.
In the PNP transistor the voltage is provided to the emitter and base terminal with base connected to the negative terminal of the voltage source and emitter connected to its positive terminal. The direction of the flow of the current is from emitter to collector whenever a significant voltage is provided to the emitter base junction.
Which description defines the mechanical advantage of a simple lever?
A.
the ratio of the total lever length to the length of the effort arm
B.
the ratio of the length of the load arm to the length of the effort arm
C.
the ratio of the length of the effort arm to the length of the load arm
D.
the ratio of the length of the load arm to the total lever length
E.
the ratio of the length of the effort arm to the total lever length
The mechanical advantage of a simple lever is C. the ratio of the length of the effort arm to the length of the load arm
Explanation:
There are two types of mechanical advantage for a machine:
The Ideal Mechanical Advantage (IMA) is the mechanical advantage of the machine if there are no loss of energy due to internal frictions, i.e. if the output work is equal to the input workThe Actual Mechanical Advantage (AMA) is the real mechanical advantage of the machine, taking into account the energy lost due to internal frictional forcesThe IMA of a lever can be calculated starting from the assumption that all the input work is transformed into output work with no loss of energy, therefore:
[tex]W_{in}=W_{out}\\F_{in} d_{in} = F_{out} d_{out}[/tex]
where
[tex]F_{in},F_{out}[/tex] are the effort and load forces, respectively
[tex]d_{in}, d_{out}[/tex] are the effort and load arm, respectively
The mechanical advantage is a measure of the multiplication factor of the force, so we can write:
[tex]IMA=\frac{F_{out}}{F_{in}}=\frac{d_{in}}{d_{out}}[/tex]
Therefore, the correct answer is
C. the ratio of the length of the effort arm to the length of the load arm
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The mechanical advantage of a simple lever is C. the ratio of the length of the effort arm to the length of the load arm
Explanation:
There are two types of mechanical advantage for a machine:
The Ideal Mechanical Advantage (IMA) is the mechanical advantage of the machine if there are no loss of energy due to internal frictions, i.e. if the output work is equal to the input work
The Actual Mechanical Advantage (AMA) is the real mechanical advantage of the machine, taking into account the energy lost due to internal frictional forces
The IMA of a lever can be calculated starting from the assumption that all the input work is transformed into output work with no loss of energy, therefore: C
Who is part of the design team in construction?
Answer:
An architect and engineers are the design team for construction projects. The team itself can also consist of an architectural company and an engineering firm that hires many architects or engineers.
Explanation:
The design team comprises the professionals needed to design the work and perhaps ensure that the work completed follows the project brief.
Designers are likely in the first place to be members of the customer's consultant team. This is generally supported by: architects.
Technologists of architecture.
Engineers of the system.
Engineers of infrastructure.
Designers of landscape.
The growing complexity of the building design means, however, that additional expertise such as: specialized facilities (e.g., kitchens, operating theatres, ponds, recording studios) is increasingly needed.
Designer of materials (for example, structural systems, doors and windows, vitreous or flooring).
Fittings and specialist equipment.
Equipment for audiovisuals.
Facilities for Information and Communications (ITC).
Facilities for safety and security.
Specialist systems (e.g. handling of baggage).
Lighting specialist.
Acoustic environment. Acoustic environment.
Who would most likIf you are interested in working for a specific company, what type of job site should you look at for opening?
a.
Geographic specific site
b.
Industry specific site
c.
Company site
d.
General job site
Answer:
if you are interested in working for a company then you should opt for c). Company Site
Explanation:
Industries can have the same scope of work but every company has their own way of achieving objectives. You should learn about the company, its job functions and the specific sector you're interested in. Review the current projects they are working on (specific to your job function), and how you can benefit the company on those projects.
Answer:
C. Company site
A vacuum gauge indicates that the pressure of air in a closed chamber is 02 bar ( vacuum) The pressure of the surrounding atmosphere is equivalent to 750 in of mercury The density of mercury is 13.95 g/ cn and the acceleration of gravity is 9.8. / Determine the absolute pressure within the chamber in bar.
Answer:
Pvac = 0.2 bar
Patm = 750 mm Hg
P Hg = 13.59 g/cm^3 * (1kg/10^3g) (10^2cm/1m)^3 = 13590 kg/m^3
g = 9.81 m/s^2
Patm = P Hg*g*L Hg
= 13590 kg/m^3 * (9.81 m/s^2) * (0.75 m)
= 100 * 10^3 * 1N/1kgms^-2 * 1 bar / 10^5 Nm^-2
= 1 bar
Pabs = Patm - Pvac = 1-0.2
= 0.8 bar
The absolute pressure within the chamber is 1.187 bar, calculated by adding the vacuum gauge reading (0.2 bar) to the atmospheric pressure (0.987 bar).
To determine the absolute pressure within the chamber, we need to consider the difference in pressure between the chamber and the surrounding atmosphere.
Given:
- Vacuum gauge reading: [tex]\(0.2 \, \text{bar}\)[/tex] (vacuum)
- Atmospheric pressure: [tex]\(750 \, \text{mmHg}\)[/tex]
- Density of mercury: [tex]\(13.95 \, \text{g/cm}^3\)[/tex]
- Acceleration due to gravity: [tex]\(9.8 \, \text{m/s}^2\)[/tex]
We'll first convert the atmospheric pressure from mmHg to bar:
[tex]\[ P_{\text{atm}} = \frac{750 \, \text{mmHg}}{760 \, \text{mmHg/bar}} = 0.987 \, \text{bar} \][/tex]
Now, we'll find the absolute pressure within the chamber by adding the vacuum gauge reading to the atmospheric pressure:
[tex]\[ P_{\text{absolute}} = P_{\text{vacuum}} + P_{\text{atm}} = 0.2 \, \text{bar} + 0.987 \, \text{bar} = 1.187 \, \text{bar} \][/tex]
So, the absolute pressure within the chamber is [tex]\(1.187 \, \text{bar}\)[/tex].
Why is it challenging to develop a problem statement for a project? What action can you take to work around this challenge to identify the problem?
A Problem Statement:
A problem statement is away from the depiction of the issue(s) that need(s) to be tended to by a critical thinking group. It plainly states what circumstance you're managing, why it's an issue, and what your optimal state would be. A straightforward and very much characterized issue proclamation will be utilized by the task group to comprehend the issue and work toward building up an answer.
An issue articulation is typically a couple of sentences to clarify the issue your procedure improvement task will address. When all is said in done, an issue explanation will plot the negative purposes of the present circumstance and clarify why these issues. Issue articulations frequently have three components: the issue itself, expressed obviously and with enough logical detail to set up why it is significant; the technique for taking care of the issue, regularly expressed as a case or a working proposal; the reason, explanation of goal and extent of the report the author is getting ready.
It is challenging to develop a problem statement for a project because it is required to carefully identify the problems in order to produce any product and/or service.
A project is an enterprise that is planned to achieve a particular objective.In engineering, projects are aimed at providing products and services.In consequence, an engineering project must carefully identify the roots of a problem (the need) and then the steps required to solve it.In conclusion, it is challenging to develop a problem statement for a project because it is required to carefully identify the problems in order to produce any product and/or service.
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If safeguarding is not possible what must be used instead
Answer: since safeguarding isn't possible distance and location must be used instead
If safeguarding is not possible, the things that must be used instead include location and distance.
How is safeguarding used?It should be noted that safeguarding is used to prevent the physical access to machines or equipments.
Therefore, if safeguarding is not possible, the things that must be used instead include location and distance.
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The relationship between weight and speed is what kind of relationship
A. Straight line
B. Squared
C. Cubed
D. There is no measurable relationship
The relationship between weight and speed is straight line relationship.
The following information should be considered:
The relationship that lies between the weight and speed should have the straight line. It can't be squared.It can't be cubed. It can't be not measurable relationship.Learn more: brainly.com/question/16911495
2+3=5
3+7=17
4+5=19
5+8=37
6+7=
Answer:
41
Explanation:
2+3 = (2x3) -(3-2)
= 6-1
=5
5+8 = 37
(5x8)-(8-5)
=40 - 3
=37
6+7 =
(6x7) - (7-6)
42 - 1
= 41 Ans
1. When two vehicles moving at the same speed are involved in a collision, the vehicle that
Answer:
that has
Explanation:
more weight may cause a strong hit
A resistor’s ____ indicates how much the resistance value of the resistor may vary.
Answer:
who's value.
Explanation:
Answer: I believe the word you are looking for is tolerance.
Explanation:
Some resistors have only three bands on their outer casing, which means that the tolerance band is blank. This means the tolerance has a default value of plus or minus 20 percent. For example, a 1k-ohm resistor would have an actual value that measures from 800 to 1200 ohms, since the tolerance would be 200 ohms.
According to kirk,What are the main problems that the central artery project is trying to solve ?
Answer:
According to kirk, this project was developed to solve traffic congestion and construction designs on the Boston's historically tangled streets which were laid out long ago.
so what is a wole numbe
A(n) _______ is turned by the crankshaft, compresses the air, and forces it into the engine.
Answer:
Explanation:
internal combustion engine.