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kirill [66]
3 years ago
14

Macrohard have conducted a multiple linear regression analysis to predict the loading time (y) in milliseconds (thousandths of s

econds) for Macrohard Workstation files based on the size of the file (x1) in kilobytes and the speed of the processor used to view the file (x2) in megahertz. The analysis was based on a random sample of 400 Macrohard Workstation users. The file sizes in the sample ranged from 110 to 5,000 kilobytes and the speed of the processors in the sample ranged from 500 megahertz to 4,000 megahertz. The multiple linear regression equation corresponding to Macrohard's analysis is:y^i = 246.10 + 0.36x1i - 0.043x2iAccording to Macrohard's multiple regression equation, it is most reasonable to conclude that:a. holding x1 constant, a one megahertz increase in x2 will result in an increase of 0.36 in the predicted value of yb. a 5,600 kilobyte file is predicted to take 2,004.1 milliseconds to load on a 6,000 megahertz processorc. a 75 kilobyte file is predicted to take 257.2 milliseconds to load on a 370 megahertz processord. holding x1 constant, a one megahertz increase in x2 will result in a decrease of 0.043 in the predicted value of y
Engineering
1 answer:
Contact [7]3 years ago
7 0

Answer:

Hook's law holds good up to. A elastic limit. B. plastic limit. C.yield point. D.Breaking point

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A 150-lbm astronaut took his bathroom scale (a spring scale) and a beam scale (compares masses) to the moon where the local grav
kozerog [31]

Answer:

a)Wt =25.68 lbf

b)Wt = 150 lbf

F= 899.59 N

Explanation:

Given that

g = 5.48 ft/s^2.

m= 150 lbm

a)

Weight on the spring scale(Wt) = m g

We know that

1\ lbf=32.17 \ lmb.ft/s^2

Wt = 150 x 5.48/32 lbf

Wt =25.68 lbf

b)

On the beam scale

This is scale which does not affects by gravitational acceleration.So the wight on the beam scale will be 150 lbf.

Wt = 150 lbf

If the plane is moving upward with acceleration 6 g's then the for F

F = m a

We know that

1\ ft/s^2= 0.304\ m/s^2

5.48\ ft/s^2= 1.66\ m/s^2

a=6 g's

a=9.99\ m/s^2

So

F = 90 x 9.99 N

F= 899.59 N

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3 years ago
Which of the following machine parts always require
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Answer:fan blades, rotating , abrasive wheel machinery

Explanation:

8 0
3 years ago
A solid cylindrical workpiece made of 304 stainless steel is 150 mm in diameter and 100 mm is high. It is reduced in height by 5
goblinko [34]

Answer:

45.3 MN

Explanation:

The forging force at the end of the stroke is given by

F = Y.π.r².[1 + (2μr/3h)]

The final height, h is given as h = 100/2

h = 50 mm

Next, we find the final radius by applying the volume constancy law

volumes before deformation = volumes after deformation

π * 75² * 2 * 100 = π * r² * 2 * 50

75² * 2 = r²

r² = 11250

r = √11250

r = 106 mm

E = In(100/50)

E = 0.69

From the graph flow, we find that Y = 1000 MPa, and thus, we apply the formula

F = Y.π.r².[1 + (2μr/3h)]

F = 1000 * 3.142 * 0.106² * [1 + (2 * 0.2 * 0.106/ 3 * 0.05)]

F = 35.3 * [1 + 0.2826]

F = 35.3 * 1.2826

F = 45.3 MN

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3 years ago
As the impurity concentration in solid solution of a metal is increased, the tensile strength:________.a) decreasesb) increasesc
valkas [14]

Answer:

Increases

Explanation:

By inhibiting the motion of dislocations by impurities in a solid solutions, is a strengthening mechanism. In solid solutions it is atomic level strengthening resulting from resistance to dislocation motion. Hence, the strength of the alloys can differ with respect to the precipitate's property. Example, the precipitate is stronger (ability to an obstacle to the dislocation motion) than the matrix and it shows an improvement of strength.

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4 years ago
Why is data driven analytics of interest to companies?
Svetlanka [38]

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Advantages of data analysis

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