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sweet-ann [11.9K]
3 years ago
12

Select the correct answer.

Engineering
1 answer:
goblinko [34]3 years ago
8 0

Answer:

A.

Explanation:

The voltage change across a resistor is negative when you traverse in the opposite direction of the current.

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Why 1+12+ Y3 < 1100
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A particular competition has five judges, each of whom award a score between 0 and 10 to each performer. • Fractional scores, su
Anettt [7]

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

5 0
3 years ago
If the head loss in a 30 m of length of a 75-mm-diameter pipe is 7.6 m for a given flow rate of water, what is the total drag fo
Stolb23 [73]

Answer:

526.5 KN

Explanation:

The total head loss in a pipe is a sum of pressure head, kinetic energy head and potential energy head.

But the pipe is assumed to be horizontal and the velocity through the pipe is constant, Hence the head loss is just pressure head.

h = (P₁/ρg) - (P₂/ρg) = (P₁ - P₂)/ρg

where ρ = density of the fluid and g = acceleration due to gravity

h = ΔP/ρg

ΔP = ρgh = 1000 × 9.8 × 7.6 = 74480 Pa

Drag force over the length of the pipe = Dynamic pressure drop over the length of the pipe × Area of the pipe that the fluid is in contact with

Dynamic pressure drop over the length of the pipe = ΔP = 74480 Pa

Area of the pipe that the fluid is in contact with = 2πrL = 2π × (0.075/2) × 30 = 7.069 m²

Drag Force = 74480 × 7.069 = 526468.1 N = 526.5 KN

3 0
4 years ago
find magnitude of the resultant force, if 30N,40N,50N and 60N forces are acting along the line joining the centr of a square to
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Answer:

56 feet

Explanation:

c 20 n north

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4 years ago
A lab technician is ordered to take a sample of your blood. As she inserts the needle, she says, "My, you have tough skin!" What
Anvisha [2.4K]

Answer:

Your stratified squamous epithelium is difficult to penetrate!

Explanation:

The epithelium is the tissue formed by one or several layers of cells attached to each other that cover all the free surfaces of the organism, and constitute the internal lining of the cavities, organs, hollows, ducts of the body and skin and also form the Mucous and glands. The epithelia also forms the parenchyma of many organs, such as the liver.

Flat or squamous epithelia: Formed by flat cells, with much less height than width and a flattened nucleus. It is one of the most external being part of the epidermis and generating some inconveniences when penetrating with needles to perform blood extractions when you have certain characteristics of hardness.

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