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Paul [167]
3 years ago
8

A particular competition has five judges, each of whom award a score between 0 and 10 to each performer. • Fractional scores, su

ch as 8.3, are allowed. • A performer’s final score is determined by dropping the highest and lowest score received, then averaging the three remaining scores. • Write a program that uses this method to calculate a contestant’s score. It should include the following functions:
Engineering
1 answer:
Anettt [7]3 years ago
5 0

Answer:

Explanation:

Lets do this in python, our function will import an array of double numbers, then it sort the array out, drop the first and last items, aka highest and lowest score. Finally, it averages the last 3 numbers by calculate the sum and divide by the number of items

def calculate_score(scores):

    scores.sort() # sort it so that the lowest is at index 0 and the highest is at last index

    drop_highest_lowest = scores[1:-1] # this will drop the lowest and highest number

    average_score = sum(drop_highest_lowest)/len(drop_highest_lowest)

    return average_score

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Name the main classes of polymer and define their characteristic properties
Svetlanka [38]

Answer:

Polymers are the naturally occurring or synthetic macromolecules that are composed of repeating subunits, called monomers.

The three main classes of polymers are: thermoplastic, thermosetting, and the elastomers.

Thermoplastic polymers have linear bonding. These polymers can be melted again and thus can recycled.

Thermosetting polymers have cross-linked bonding. These polymers decompose when heated and thus can not be remelted and recycled.

Elastomers have linear bonding with some cross-linking. These polymers extreme elastic extensibility and thus can revert back to its original shape after deformation, without causing any permanent damage.

8 0
4 years ago
Area under the strain-stress curve up to fracture:______
AlexFokin [52]

Answer:

Area under the strain-stress curve up to fracture gives the toughness of the material.

Explanation:

When a material is loaded by external forces stresses are developed in the material which produce strains in the material.

The amount of strain that a given stress produces depends upon the Modulus of Elasticity of the material.

Toughness of a material is defined as the energy absorbed by the material when it is loaded until fracture. Hence a more tough material absorbs more energy until fracture and thus is excellent choice in machine parts that are loaded by large loads such as springs of trains, suspension of cars.

The toughness of a material is quantitatively obtained by finding the area under it's stress-strain curve until fracture.

4 0
4 years ago
What did Gilbert Arenas did impact or influence on Black History and Sports?
7nadin3 [17]

Answer: December 19, 2009, NBA star Gilbert Arenas and a teammate on the  Washington Wizards  Javaris Crittenton got in a heated argument over a  game,  and made violent threated. After Crittenton challenged him to a fistfight, Arenas told his younger teammate he could not  fight him, but he'd burn his SUV or shoot him in the face instead.

this overall had a negative affect   on black history when it comes to sports or Gilbert

3 0
3 years ago
Read 2 more answers
A​ special-purpose 30-horsepower electric motor has an efficiency of 9090​%. Its purchase and installation price is ​$2 comma 20
Taya2010 [7]

Answer:

Motor 1 recommended  

Given Information:

Two 30-horsepower motors

Consumption = 4,000 hours per year

Electricity cost = ​$0.10 per​ kWh

Load factor of motors = 60​%

MARR = 15​%

Study period = 8 years

Motor 1:

Efficiency = 90​%

Purchase + Installation cost = $2,200

Motor 2:

Efficiency = 93%

Purchase + Installation cost = $3,200

Required information:

Which motor should be recommended under these conditions = ?

Solution:

Electricity cost = Rate of electricity*Units consumed*Load factor

Electricity cost: Motor 1

Units consumed = (30 hp/0.90)*(0.746 kW/hp)*(4000 h/year)

Units consumed = 99,466.66 kWh/year

Electricity cost = (99,466.66 kWh/year)*(0.10/kWh)*(0.60)

Electricity cost = $5,968 per year

Electricity cost: Motor 2

Units consumed = (30 hp/0.93)*(0.746 kW/hp)*(4000 h/year)

Units consumed = 96,258 kWh/year

Electricity cost = (96,258 kWh/year)*(0.10/kWh)*(0.60)

Electricity cost = $5,775 per year

Present Worth Analysis: Motor 1

PW = -$2,200 - $5,968( P/A, 15%, 8)

where (P/A,15%,8) = Uniform series present worth at 15% MARR and n = 8 years

P/A = (1 + i)ⁿ - 1/ i*(1 + i)ⁿ

P/A = (1 +0.15)ⁿ - 1/ 0.15(1 + 0.15)ⁿ

P/A = 4.487

PW = -$2,200 - $5,968(4.487)

PW = -$28,978

Present Worth Analysis: Motor 2

PW = -$3,200 - $5,775( P/A, 15%, 8)

P/A = 4.487

PW = -$3,200 - $5,775(4.487)

PW = -$29,112

Recommendation:

In present worth analysis, we select the alternative which has largest PW value i.e more positive or least negative.

Since the PW of motor 1 (90% efficiency) is greater (less negative) than the motor 2 (93% efficiency).

Therefore, Motor 1 recommended  

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4 years ago
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devlian [24]

Explanation:

The wind is an actual form of solar energy. winds are caused by the heating of the atmosphere by the sun, the rotation of the earth, and the earth's surface irregularities. The wind is capture in a wind turbine which provides a renewable energy source, the wind makes the rotor spin, as the rotor spins the movement of the blades drives a generator that creates energy, also known as wind power. The average wind efficiency of turbines is between 35-45%.

Advantages of wind power

- Wind power is cost-effective

- wind creates jobs

- wind enables US industry growth and US competitiveness

-it's a clean fuel source

   

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3 years ago
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