In the United States, a bicyclist is killed:
A. (Every 12 hours
B. Every week
c. Every day
D. Every 6 hours

Answer:

a) it is periodic

N = (20/3)k = 20 { for K =3}

b) it is Non-Periodic.

N = ∞

c) x(n) is periodic

N = LCM ( 5, 20 )

Explanation:

We know that In Discrete time system, complex exponentials and sinusoidal signals are periodic only when ( 2π/w₀) ratio is a rational number.

then the period of the signal is given as

N = ( 2π/w₀)K

k is least integer for which N is also integer

Now, if x(n) = x1(n) + x2(n) and if x1(n) and x2(n) are periodic then x(n) will also be periodic; given N = LCM of N1 and N2

now

a) cos(2π(0.15)n)

w₀ = 2π(0.15)

Now, 2π/w₀ = 2π/2π(0.15) = 1/(0.15) = 1×20 / ( 0.15×20) = 20/3

so, it is periodic

N = (20/3)k = 20 { for K =3}

b) cos(2n);

w₀ = 2

Now, 2π/w₀ = 2π/2) = π

so, it is Non-Periodic.

N = ∞

c)  cos(π0.3n) + cos(π0.4n)

x(n) = x1(n) + x2(n)

x1(n) = cos(π0.3n)

x2(n) =  cos(π0.4n)

so

w₀ = π0.3

2π/w₀  = 2π/π0.3 = 2/0.3 = ( 2×10)/(0.3×10) = 20/3

∴ N1 = 20

AND

w₀ = π0.4

2π/w₀  = 2π/π0. = 2/0.4 = ( 2×10)/(0.4×10) = 20/4 = 5

∴ N² = 5

so, x(n) is periodic

N = LCM ( 5, 20 )

Answer:

Ok.

Explanation:

This is what true artis.

Answer Digital measuring instruments are self-contained devices that automatically present the value of the measured quantity on a digital display. And Decimal Scaled Instruments: Record all digits that you can certainly determine from the scale markings and estimate one more digit. I hope this Helped I´m new to this.

Explanation:

Solution :

Given :

cross sectional area = 5.6 cm square

The corresponding stress

[tex]$\sigma = \frac{F}{A}$[/tex]

  [tex]$=\frac{2.5 \times 175 \ lb\times (1 \ N/ 0.2248 \ lb)}{5.6 \ cm^2 (1 \ N/100 \ cm)^2}$[/tex]

  [tex]$=\frac{1946.17}{0.056 \times 10^{-2}}$[/tex]

  [tex]$= 3.475 \times 10^6 \ N/m^2$[/tex]

∴ [tex]$\sigma = 3.475 \ MPa$[/tex]

And the strain is

[tex]$\epsilon = \frac{\sigma}{E}$[/tex]

   [tex]$=\frac{3.475}{124 \times 10^3}$[/tex]

   [tex]$= 2.80 \times 10^{-5}$[/tex]

Answer:

rotation

Explanation:

I just answered this!

Answer:

...

Explanation:

...

Answer:

power = 0

Explanation:

Given data:

cosine waveform; y(t)  = 10cos(120πt)

peak value = 10A

frequency = 60 Hz

Calculate power throughout given x(t) and y(t) are assumed to be voltage waveform and current waveform

y(t)  = 10cos(120πt)

frequency of x(t) = 100 Hz

frequency of y(t) = 60 Hz

power = IV   where frequency is constant/similar

from the above it can be seen that frequency differs for x and y components hence power = 0

Answer:

Technician be says that diesel engines produce more power because they use excess air to burn feel who is correct

Explanation:

He is correct as many engines are run by diesel. It produces more power as that is how cars produce more power.

Answer:

new ArrayList<Thing>()

Explanation:

The syntax to declare an arrayList is:

ArrayList [var-name] = new ArrayList<data-type>()

From the question;

We understand that the variable name is: a

And the data-type is: Thing

So, the ArrayList of type Thing can be defined using:

ArrayList a = new ArrayList<Thing>();

Hence:

None of the options answers the question.

Answer:

True

Explanation:

Mechanical Advantage Of A Wedge

It is the ratio of the output force to the input force. A wedge applies more force to the object (output force) than the user applies to the wedge (input force), so the mechanical advantage of a wedge is greater than 1

Answer:

improved

Explanation:

Answer:

wat

Explanation:

Answer: c. The creative middle way

Explanation:

As there is both an obligation to preserve jobs and to protect the environment, a creative middle way which involves compromise would be most effective.

The company involved should process and remove the worst pollutants alone while leaving others so that the process will not be so expensive that they have to close down.

They will do this till a better and more environmentally beneficial solution can be found at which point they can then clean up the previous pollutants with the hope that they have not irrecoverably damaged the environment.

Answer: Trade secrets

Explanation:

Patent is a license from the government that is given to a a firm for a period of time and this gives the firm the sole right to sell a particular product. Patent is normally given to firms when there's an innovation by the firm.

A trademark is an intellectual property and it consist of symbols, words, design or phrase which helps to differentiate one company from another company.

Copyright simply means the right that's given to an individual or firm to copy. It is the legal right that the owner of an intellectual property has. It is a crime when one copies the work of someone else without the approval from the owner of the work.

Trade secrets are the formula, recipe or process used by a company during production process which gives such company an edge over its competitors.

With regards to the definition above, the answer is a trade secret. This is because some industrial processes used by his former company are being exposed and told to the new company.

Answer:

B. a model

Explanation:

A three-dimensional rendering of a product concept is called a model.

An example of a model used in computer programming is the software development life cycle (SDLC) model.

Software development life cycle (SDLC) can be defined as a strategic process or methodology that defines the key steps or stages for creating and implementing high quality software applications.

Some of the models used in the software development life cycle (SDLC) are;

I. A waterfall model: it can be defined as a process which involves sequentially breaking the software development into linear phases. Thus, the development phase takes a downward flow like a waterfall and as such each phase must be completed before starting another without any overlap in the process.

II. An incremental model: it refers to the process in which the requirements or criteria of the software development is divided into many standalone modules until the program is completed.

III. A spiral model: it can be defined as an evolutionary SDLC that is risk-driven in nature and typically comprises of both an iterative and a waterfall model. Spiral model of SDLC consist of these phases; planning, risk analysis, engineering and evaluation.

Answer:

engine suspension brake and more

Explanation:

Answer:

Deburring Tool

Explanation:

A deburring tool is used in order to debur the PVC pipes. They are mostly used for the plastic pipes.

After the PVC pipes are cut, there are burrs on the pipe surface. To remove these burrs, a deburring tool is used. It removes the burrs form the edges of the PVC pipes that results from grinding, cutting, milling, drilling, etc.

The deburring tools are made from high speed steels.

Answer:

they were updated rather than being created

Answer:

Invention is about creating something new, while innovation introduces the concept of “use” of an idea or method.

Answer:

When analyzing forces in a structure or machine, it is conventional to classify forces as external forces;

constraint forces or internal forces.

External forces arise from interaction between the system of interest and its surroundings.

Examples of external forces include gravitational forces; lift or drag forces arising from wind loading;

electrostatic and electromagnetic forces; and buoyancy forces; among others. Force laws governing these

effects are listed later in this section.

Constraint forces are exerted by one part of a structure on another, through joints, connections or contacts

between components. Constraint forces are very complex, and will be discussed in detail in Section 8.

Internal forces are forces that act inside a solid part of a structure or component. For example, a stretched

rope has a tension force acting inside it, holding the rope together. Most solid objects contain very

complex distributions of internal force. These internal forces ultimately lead to structural failure, and also

cause the structure to deform. The purpose of calculating forces in a structure or component is usually to

deduce the internal forces, so as to be able to design stiff, lightweight and strong components. We will

not, unfortunately, be able to develop a full theory of internal forces in this course – a proper discussion

requires understanding of partial differential equations, as well as vector and tensor calculus. However, a

brief discussion of internal forces in slender members will be provided in Section 9.

Explanation:

Answer:

a) the moisture content before it was placed in the oven is 18.18%

b) degree of saturation for soil is 72.19%

Explanation:

Given the data in the question;

Moisture Content = [(Weight of soil before dry - dry weight) / dry weight] × 100

so we substitute

Moisture content = [(53.3 - 45.1) / 45.1 ] × 100

= (8.2/45.1) × 100

= 18.18%

Therefore the moisture content before it was placed in the oven is 18.18%

Dry Unit Weight = dry weight / volume

Dry Unit Weight = 45.1 lb / 0.45 ft³

Dry Unit Weight = 100.22 lb/ft³

we know that;

dry unit weight = (Specific gravity × unit weight of water) / (1 + e)

we also know that; unit weight of water is 62.43 lbf/ft³

so we substitute

e = (2.70×62.43 / 100.22) - 1

e = 1.68 - 1

e = 0.68

so void ratio e = 0.68

Now we determine the degree of saturation using the equation;

degree of saturation = (Moisture content × specific gravity) / void ratio

we substitute

degree of saturation = ( 18.18% × 2.7) / 0.68

= 0.49086 / 0.68

= 0.7219 ≈ 72.19%

Therefore degree of saturation for soil is 72.19%

Answer: how far is the school?

Explanation:

The carriage handwheel is used to manually position and/or hand feed the carriage in the longitudinal or Z axis.

IamSugarBee

Answer:

Explanation:

From the given information:

Pressure at the elevation  4.8 m = 34.7 kPa

Pressure at the elevation 2.2 m = 57.5 kPa

Recall that:

At the pressure of depth "h";

p = ρgh

where;

ρgh = 34.7 × 10 ³

ρ × 9.81 × h = 34.7 × 10³

ρh = 34.7 × 10³/9.81

ρh = 3.54  × 10³ -----  equation (1)

ρg(h + 4.8 - 2.2) = 57.5 × 10³

ρ × 9.81 × (h + 2.6) =  57.5 × 10³

ρ (h + 2.6) =  57.5 × 10³ / 9.81

ρ (h + 2.6) =  5.86 × 10³   ------  equation (2)

From equation (1) and (2);

The density of the oil ρ is determined to be = 0.8939 × 10³ kg/m³

≅ 893.9 kg/m³

The specific weight w = ρg

w = 0.8939  × 10³  × 9.81

w = 8769.159

w = 8.75 × 10³ kg/m²/s²

The specific gravity SG = [tex]\dfrac{\rho _{oil}}{\rho_{water}}[/tex]

= [tex]\dfrac{0.8939 \times 10^3}{10^3}[/tex]

= 0.8939

≅ 0.894

Solution :

Given :

The power of the air‐conditioning (AC) unit is , W = 0.434 kW

The coefficient of performance or the COP of the air‐conditioning (AC) unit is given by  = 6.22

Therefore he heat removed is given by , [tex]$Q_H = 6.22 \times 0.434$[/tex]

                                                                     [tex]$Q_H = 2.7 \ kW $[/tex]

Now if the electricity is valued at  0.10 dollar per kW hour, then the operating cost of the air conditioning unit in 24 hours is given by = 0.10 x 2.7 x 24

                                                                                            = 6.48

Therefore the operating cost = $ 6.48 for 24 hours.

Answer:

ee

Explanation:

This is an over the top question

The program requires a sequence control structure; First, we get input for the variables, and then use the formula to calculate the amount of calories burnt.

The program in python is as follows, where comments (in italics) are used to explain each line.

#This gets input for age, in years

age = int(input("Age (years): "))

#This gets input for weight, in pounds

weight = int(input("Weight (pounds): "))

#This gets input for heart rate, in beats per minutes

heart_rate = int(input("Heart Rate (beats per minutes): "))

#This gets input for time, in minutes

time = int(input("Time (Minutes) : "))

#This calculates the calories burnt for men

calories_man = ((age * 0.2017) - (weight * 0.09036) + (heart_rate * 0.6309) - 55.0969) * time / 4.184

#This calculates the calories burnt for women

calories_woman = ((age * 0.074) - (weight * 0.05741) + (heart_rate * 0.4472) - 20.4022 ) * time / 4.184

#This prints the calories burnt for men

print('Men: %0.2f calories' % calories_man)

#This prints the calories burnt for women

print('Women: %0.2f calories' % calories_woman)

Please note that the program does not check for valid inputs

See attachment for program output

Read more about Python programs at:

https://brainly.com/question/22841107

Answer:

299.36 feet

Explanation:

[tex]To \ find \ the \ distance \ of \ the \ ball \ from \ the \ home \ plate. \\ \\ From \ the \ given \ information:[/tex]

[tex]Height \ h = 4 \ ft[/tex]

[tex]Initial \ speed \ V_o = 98 \ ft/s ec[/tex]

[tex]The \ angle \ \theta = 45^0[/tex]

[tex]Acceleration \ due \ to \ gravity (g)= 32.2 \ ft/s[/tex]

[tex]U_x = V_o \ cos 45 = \dfrac{98}{\sqrt{2}}[/tex]

[tex]U_y = V_o \ sin 45 = \dfrac{98}{\sqrt{2}}[/tex]

So;

[tex]S_y = u_y t - \dfrac{1}{2}gt^2[/tex]

[tex]-1 =\dfrac{98}{\sqrt{2}}t - \dfrac{1}{2}*32*1.85t^2[/tex]

By solving:

[tex]t_1 = 4.32 \ sec[/tex]

Thus;

[tex]horizontal \ distance = U_x t[/tex]

[tex]= \dfrac{98}{\sqrt{2}}\times 4.32[/tex]

[tex]\mathbf{=299.36 \ feet}[/tex]

[tex]\mathbf{Thus \ , the \ distance \ from \ the \ home \ plate \ = \ 299.36 \ feet}[/tex]

Explanation:

1. Cybersecurity Strategy Development Guide

The Strategy Development Guide defines a road map that PUCs can follow to design and implement

a structured approach for long-term engagement with utilities on cybersecurity matters. The guide

includes examples from PUCs that demonstrate the process steps and highlights the drivers of

successful outcomes. (2018)

2. Understanding Cybersecurity Preparedness: Questions for Utilities

The Questions for Utilities provides a set of comprehensive, context-sensitive questions that PUCs

can ask a utility to gain a detailed understanding of its current cybersecurity risk management

program and practices. The questions build upon and add to those included in previous NARUC

publications. (2019)

3. Cybersecurity Preparedness Evaluation Tool (CPET)

The CPET provides a structured approach for PUCs to use in assessing the maturity of a utility’s

cybersecurity risk management program and gauging capability improvements over time. The

CPET is designed to be used with the Questions for Utilities on an iterative basis to help PUCs

identify cybersecurity gaps, spur utilities’ adoption of additional mitigation strategies, and inform

cybersecurity investment decisions. (2019)

4. Cybersecurity Tabletop Exercise (TTX) Guide

This guide details the steps that PUCs can take to design and execute an exercise to examine utilities’

and other stakeholders’ readiness to respond to and recover from a cybersecurity incident. The

guide also is helpful to PUCs seeking to exercise their own cybersecurity strategies and capabilities.

Exercise scenarios and examples are included. (2020)

5. Cybersecurity Glossary

The Glossary contains cybersecurity terms used throughout the Cybersecurity Manual, as well as

“terms of art” that utilities may use during discussions with PUCs. (2019)

Components of the Cybersecurity Manual can be used individually but are designed to work together.

NARUC’s intent is to provide a comprehensive set of assessment tools that, when applied, provide a consistent,

complete view of utilities’ cybersecurity preparedness.

Answer:

Conducting a tabletop exercise

Explanation:

Answer:

Jordan has more green paints

Explanation:

Given

[tex]Green = \frac{5}{8}[/tex]

[tex]Blue = \frac{3}{6}[/tex]

Required

Which paint does he have more?

For better understanding, it's better to convert both measurements to decimal.

For the green paint:

[tex]Green = \frac{5}{8}[/tex]

[tex]Green = 0.625[/tex]

For the blue paint:

[tex]Blue = \frac{3}{6}[/tex]

[tex]Blue = 0.5[/tex]

By comparison:

[tex]0.625 > 0.5[/tex]

This means that Jordan has more green paints

Answer:

Hydraulic gradient=0.0173

Explanation: