Correlation between a factor (e.g. social support) and the ladder score (which presents happiness in this dataset).
do countries that have a high ladder score generally have a high social support score?
Does ladder score generally go up if social support score goes up?
If so, is the correlation consistent across countries? If not, is it more significant in certain regions e.g. Europe but not the others?
Consider using a scatter plot to explore the correlation. Also, please adjust the figure size so that all the labels are legible.
I WAS usIng this program but I dont how to just and create a scatter plot to answer these questions world_happiness_report_2020.csv
import pandas as pd
import matplotlib.pyplot as plt
df = pd.read_csv('world_happiness_report_2020.csv')
df.plot() # plots all columns against index
df.plot(kind='scatter',x='Country name',y= 'Generosity') # scatter plot
df.plot(kind='density') # estimate density function
# df.plot(kind='hist') # histogram

Answer:

attached below

Explanation:

To derive the equation we have to make some assumptions

assumptions:

Assume T depends on Z alone

Assume uniform thermal and electrical conductivities (k and ke) in the wire, Assume  a uniform heat

transfer coefficient h from the wire to the air stream.

attached below is the required derivation of the equation

The attenuation of the light passing through the sample is approximately 1.70 dB.

The attenuation of light in a material is given by the equation:

A = -log(T)

where T is the transmittance of the material, which is defined as the ratio of the intensity of light transmitted through the material to the intensity of the incident light.

In this case, the absorption coefficient of the material is a=0.39 mm^-1, and the sample thickness is d=1 mm. The transmittance can be calculated using the Beer-Lambert law:

T = e^(-ad)

where e is the base of the natural logarithm (approximately 2.71828).

Substituting the values, we get:

T = e^(-0.39 x 1) ≈ 0.677

Therefore, the attenuation is:

A = -log(T) ≈ -log(0.677) ≈ 0.170

Multiplying by 10, we get the attenuation in units of decibels (dB):

Attenuation = 10A ≈ 1.70 dB

The attenuation of the light passing through the sample is approximately 1.70 dB.

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Answer:

Automation generally means “a process performed without human assistance”, while autonomy implies “satisfactory performance under significant uncertainties in the environment and the ability to compensate for system failures without external intervention [emphasis mine].”

Explanation:

Answer: The failure of engineers working on the Mars Climate-Orbiter to coordinate measurement standards, resulting in a major public embarrassment for NASA, is an example of a communication issue known as cultural difference or cross-cultural communication. This refers to the difficulties that can arise when people from different cultures, with different languages, customs, and communication styles, work together on a project. In this case, the interaction between the British and U.S. teams working on the Mars Climate-Orbiter project is an example of cultural differences that led to communication issues and ultimately resulted in the failure of the project.

Specifically, the engineers from the US team used the imperial system of measurement, while the engineers from the UK team used the metric system, this led to a misinterpretation of the data, and the orbiter was lost due to a miscalculation in the trajectory.

Explanation:

Answer:

A cost is something you have to give up or sacrifice and a benefit is something that is gained or is helpful.

Explanation:

In a cost-benefit analysis of a system, an engineer is to simply look at the requirements for the system and determine the costs to build the system, both in financial value and energy value.  Additionally, the engineer needs to determine the benefits that would come from choosing a particular path of cost.  If the benefits outweigh the cost for the project, then the solution is accepted.  Else, the cost outweighs the benefit and the solution is rejected.

Answer:

Explanation:

Determining whether you need new rotors or just brake pads requires some observation and consideration of the following factors:

1. Brake Performance: If you notice a decrease in braking efficiency, such as longer stopping distances or a spongy brake pedal, it may indicate worn-out brake pads. However, if you experience pulsation or vibration when applying the brakes, it could indicate warped or unevenly worn rotors.

2. Visual Inspection: Remove the wheel and visually inspect the brake pads. If the pad material is worn down to less than a quarter of an inch (around 3-4 millimeters), they likely need replacement. Additionally, check for any cracks, chips, or uneven wear on the rotors. If the rotors have deep grooves, are severely worn, or have heat spots, they may need to be replaced.

3. Squealing or Grinding Noises: If you hear high-pitched squealing or metallic grinding sounds when braking, it is often an indication that the brake pads are worn down to their metal backing. This suggests the need for new brake pads. However, if the noise is accompanied by pulsation or vibration, it may indicate issues with the rotors as well.

4. Visual Indicators on Brake Pads: Some brake pads have wear indicators built into them. These are small metal tabs that will start making contact with the rotor when the brake pads are worn out. If you see these indicators in contact with the rotor, it's a clear sign that the brake pads need replacement.

5. Professional Inspection: If you are uncertain about the condition of your brake pads or rotors, it is always recommended to consult a professional mechanic. They can perform a thorough inspection and provide an accurate assessment of whether you need new brake pads, rotors, or both.

Remember that the condition of both brake pads and rotors should be considered together, as worn-out brake pads can accelerate rotor wear and vice versa. It's important to address any issues promptly to maintain optimal braking performance and ensure safety on the road.

The force sensor would read low. When there is an angle ϴ between the direction the string pulls and the sensor's measuring direction.

the measured force is the component of the force vector in the sensor's direction. As ϴ increases, the component of the force vector in the sensor's direction decreases, resulting in a lower reading on the force sensor. The force sensor measures the force along its measuring direction, so any deviation from that direction reduces the measured force value. The force sensor would read low. When there is an angle ϴ between the direction the string pulls and the sensor's measuring direction, the measured force would be lower due to the reduction in the component of the force vector along the sensor's measuring direction.

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Answer:

Resistance = 3 Ω

Explanation:

As we know that, By Ohm's Law

V = IR

where

V is the voltage in volt

I is the current in amps

R is the resistance in ohm

Now,

Given that,

V = 15 volts

I = 5 amps

So,

R = V/I

  = 15/5

 = 3 Ω

⇒R = 3 Ω

The velocity at point P has x and y components that are 0 in/s and -1.5 in/s, respectively.

The components of velocity v v have magnitudes of v x = v cos and v y = v sin, where v is the magnitude of the velocity and is its direction with respect to the horizontal.

vB = rAB × wAB

rAB = 2.5 in

vB = (2.5 in) × (4 rad/s) = 10 in/s

vD = rBD × wBD

rBD = 3 in

vD = (3 in) × wBD

vP = 0

vD = vB

The velocity of point P can be found using the formula:

vP = vD + vP/D

\(vD^2 = vB^2 + vP/D^2\)

\(vD^2 = (10 in/s)^2 + (3 in/s)^2\)

vD = 10.44 in/s

Now we can find wBD:

vD = rBD × wBD

wBD = vD / rBD = 10.44 in/s / 3 in = 3.48 rad/s

vPx = vP cosθ = 0

vPy = vP sinθ

where θ is the angle between vP and the x-axis.

θ = 180° - 30° = 150°

vPy = vP sin150° = (3 in/s) × sin(150°) = -1.5 in/s (negative because it is in the negative y-direction)

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Answer:

b

Explanation:

The benefits of autonomous driving technology to various corporate stakeholders and society are numerous. Some advantages include improved safety, increased efficiency, and enhanced mobility.

Safety: Autonomous vehicles have the potential to reduce human error, which is a leading cause of accidents. With advanced sensors and algorithms, autonomous vehicles can detect and respond to potential hazards more effectively, potentially reducing the number of accident and fatalities on the road.

Efficiency: Autonomous vehicles have the potential to optimize traffic flow and reduce congestion. They can communicate with each other and make real-time decisions to avoid traffic jams, choose the most efficient routes, and improve overall transportation efficiency. Autonomous driving technology has the potential to provide transportation options for people who cannot drive, such as the elderly or disabled.

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A) If climbing at VMO, it is possible to exceed MMO.VMO and MMO are two different limits that aircraft have to operate within to ensure their safety.

VMO is the maximum indicated airspeed at which the aircraft can be flown without risking damage to the structure due to excessive aerodynamic loads. On the other hand, MMO is the maximum Mach number at which the aircraft can be flown without risking the onset of compressibility effects, such as shock waves and control surface flutter.During a climb, the airspeed decreases as the aircraft gains altitude, while the Mach number increases due to the decreasing air density. Therefore, if an aircraft is climbing at VMO, it is possible to exceed MMO since the Mach number is increasing while the airspeed is decreasing.

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Explanation:

thermal expansion ∝L = (δL/δT)÷L ----(1)

δL = L∝L + δT ----(2)

we have δL = 12.5x10⁻⁶

length l = 200mm

δT = 115°c - 15°c = 100°c

putting these values into equation 1, we have

δL = 200*12.5X10⁻⁶x100

= 0.25 MM

L₂ = L + δ L

= 200 + 0.25

L₂ = 200.25mm

12.5X10⁻⁶ *115-15 * 20

= 0.025

20 +0.025

D₂ = 20.025

as this rod undergoes free expansion at 115°c, the stress on this rod would be = 0

To answer the question: "T/F there is a limit of 35 changing cells in the edit scenario dialogue box"

True, there is a limit of 35 changing cells in the Edit Scenario dialogue box in Microsoft Excel.

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Irreversibilities present in an internal combustion engine include: friction. heat transfer. chemical reaction.

A system's internal irreversibilities are  been seen in the system however the External irreversibilities are those that take place outside of the body.

It should be noted that the overall entropy, can be seen as the sum of the system and its reservoir,  which can be positive, hence physical process is said to be thermodynamically irreversible.

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Value engineering is a systematic approach that aims to improve the value of a product, project, or process by analyzing its functions and identifying opportunities for cost reduction while maintaining or improving its performance and quality. It involves a collaborative effort of cross-functional teams, including engineers, designers, managers, and other stakeholders.

The role of value engineering in target costing is to help achieve the desired cost target for a product or project. Target costing is a cost management approach that sets the desired cost based on market conditions and customer requirements. Value engineering supports target costing by finding ways to optimize the value delivered to customers while controlling costs.

Here's how value engineering contributes to target costing:

Function analysis: Value engineering starts with a thorough analysis of the product's functions and their importance to customers. By understanding the value provided by each function, teams can prioritize them based on customer needs and focus efforts on cost reduction for non-critical functions.

Cost analysis: Value engineering involves a detailed analysis of the costs associated with various components, materials, and processes involved in the product or project. It helps identify areas where costs can be reduced without compromising the essential functions or quality.

Creativity and innovation: Value engineering encourages creativity and innovative thinking to find alternative designs, materials, or processes that can deliver the required functions at a lower cost. It involves brainstorming sessions and idea generation to explore different possibilities.

Trade-off analysis: Value engineering facilitates trade-off analysis between cost, performance, and quality. It helps identify trade-offs that can be made to reduce costs while still meeting customer expectations. By understanding the impact of different design or process changes on cost and performance, informed decisions can be made.

Collaboration and continuous improvement: Value engineering promotes collaboration among cross-functional teams to identify cost-saving opportunities. It encourages open communication and the sharing of ideas to drive continuous improvement in cost management. It also fosters a culture of innovation and cost-consciousness throughout the organization.

Overall, value engineering plays a vital role in target costing by helping teams identify cost reduction opportunities, optimize the value delivered to customers, and achieve the desired cost targets without compromising quality or customer satisfaction. It ensures that the product or project remains competitive in the market while meeting cost objectives.

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Answer:Ironworker

Explanation:

Their work is totally physical and lead they get hampered by lead most

Answer:

answer:ironworker

Explanation:

they can be hampered and can also get severely injured.

The accident theory divides an accident into three phases: pre-contact, contact, and post-contact is the domino theory.

The domino theory is a geopolitical theory that holds that changes in democracy in one country have a domino impact on surrounding countries.

The multiple-factor theory examines not just the three domino theory phases—precontact, contact, and post-contact—but also additional elements that influence an accident, such as management, machine, media, and man.

Therefore, the domino theory separates an accident into three phases: pre-contact, contact, and post-contact.

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Answer:

D

Explanation:

Your answer is D.There is nothing to do; if you do not own the car anymore, it is not your responsibility

Answer:

Trust me the answer is B I took the quiz last week

Answer:

up up down down

Explanation:

left right left right b a select start

To determine the drag on a flat plate under different conditions, we need to consider the drag coefficient and the reference area. The drag coefficient depends on the flow regime (laminar or turbulent) and can be approximated using different correlations.

Drag at U: 0.664 * ρ * U^2 * l^2

Drag at 2U: 2.656 * ρ * U^2 * l^2

Drag at U/2: 0.166 * ρ * U^2 * l^2

For a flat plate with a laminar boundary layer, we can use the following relationships:

Drag coefficient for laminar flow on a flat plate:

Cd = (1.328 / sqrt(Re)) * (2l/b)

where Re is the Reynolds number, given by Re = (ρU l) / μ, with ρ being the density, U the velocity, l the length of the plate, and μ the dynamic viscosity.

Reference area:

The reference area, denoted as A, is the projected area of the plate perpendicular to the flow. For a flat plate, A = l * b.

Now, we can calculate the drag for different velocities:

Upstream velocity U:

Drag = 0.5 * Cd * ρ * U^2 * A

= 0.5 * [(1.328 / sqrt(Re)) * (2l/b)] * ρ * U^2 * l * b

= 0.664 * ρ * U^2 * l^2

Upstream velocity 2U:

Drag = 0.5 * Cd * ρ * (2U)^2 * A

= 0.5 * [(1.328 / sqrt(Re))] * ρ * (2U)^2 * l * b

= 2.656 * ρ * U^2 * l^2

Upstream velocity U/2:

Drag = 0.5 * Cd * ρ * (U/2)^2 * A

= 0.5 * [(1.328 / sqrt(Re))] * ρ * (U/2)^2 * l * b

= 0.166 * ρ * U^2 * l^2

Therefore, the drag on the flat plate when the upstream velocity is U, 2U, and U/2 can be expressed as:

Drag at U: 0.664 * ρ * U^2 * l^2

Drag at 2U: 2.656 * ρ * U^2 * l^2

Drag at U/2: 0.166 * ρ * U^2 * l^2

Please note that these calculations assume laminar flow and neglect any other external factors that may affect the drag on the plate.

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Note that to access the first element of an array of integers called "numbers", you can use the following expression

numbers[0]

To access the last element of the array "numbers" assuming it contains 10 elements, you can use the following expression

numbers[9]

To access the last element of the array "numbers" regardless of its length, you can use the following expression

numbers[numbers.length-1]

An array is a data structure in computer science that consists of a collection of components of the same memory size, each identifiable by at least one array index or key.

A mathematical method is used to determine the location of each element from its index tuple in an array.

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With the lowest strength and elastic modulus and tensile strengths available at room temperature, polymer are typically thought to be the weakest materials.

It is defined as the minimum tensile stress required to separate the material. The metal has a mechanical properties of 1,000 pounds of force, for instance, if a metal rod with a cross section of one square inch can bear a thrust of 1000 usd but snaps with further pressure.

Tensile strength comes in three varieties: Yield strength (A) is the maximum amount of stress that a material can endure without permanently deforming. The highest stress that a material can bear is its ultimate strength (B). The stress vector on the maximum fault at the time of rupture is known as breaking strength (C).

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Common agricultural commodities include dairy products, wheat, and coffee. You can invest in and “trade” these products virtually, without running a farm and purchasing and storing the items yourself.

ANSWER:

Aerospace Engineering. ...

Chemical Engineering. ...

Biomedical Engineering.

EXPLANATION:

This is all i know but ... I hope this helps~

Answer: i believe it’s acoustics

Explanation:

Answer:

Explanation:

To determine the required size of standard schedule 40 steel pipe to carry 192 m³/hour of water with a minimum velocity of 6.0 m/sec, we can use the following formula:

Q = A × v

where Q is the volumetric flow rate of water, A is the cross-sectional area of the pipe, and v is the velocity of water.

First, we need to convert the volumetric flow rate from m³/hour to m³/sec.

192 m³/hour = 0.0533 m³/sec

Next, we can rearrange the formula to solve for the cross-sectional area:

A = Q / v

A = 0.0533 m³/sec / 6.0 m/sec

A = 0.0089 m²

The cross-sectional area of the pipe is 0.0089 m².

Standard schedule 40 steel pipe has a nominal inside diameter (ID) of 1.049 inches, which is approximately 0.0266 meters. The cross-sectional area of the pipe can be calculated using the formula for the area of a circle:

A = π × (ID/2)²

A = 3.14 × (0.0266/2)²

A = 5.58×10^-4 m²

To determine the required size of the pipe, we can rearrange the formula for the area of a circle to solve for the diameter:

ID = 2 × √(A/π)

ID = 2 × √(0.0089/π)

ID = 0.106 meters

Therefore, the required size of standard schedule 40 steel pipe to carry 192 m³/hour of water with a minimum velocity of 6.0 m/sec is a nominal size of 4 inches, with an inside diameter of 0.102 meters (or 102 millimeters).