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ENGR 2050 ECU Final Exam Questions & Answers 2024/2025

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ENGR 2050 ECU

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ENGR 2050 ECU

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Uploaded on September 12, 2024
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Written in 2024/2025
Type Exam (elaborations)
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engr 2050 ecu final exam questions answers 2024

Institution ENGR 2050 ECU
Course ENGR 2050 ECU

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ENGR 2050 ECU Final Exam Questions
& Answers 2024/2025

Write a MATLAB function called rad2deg that will take an angle in radians as the input argument and
return the angle converted to degrees. Write the MATLAB code to plot the function rad2deg from 0 to
2pi - ANSWERSfunction deg = rad2deg(rad)

deg = rad * 180/pi ;

end

fplot(@rad2deg, [0 2*pi])

Write a MATLAB function that will calculate the volume and weight of water in a conical tank. The
function should have two input arguments (diameter and height) and return an array containing the
volume and weight of water. Note: The specific weight of water is 62.4 lb/ft^3. - ANSWERS//Vcone = 1/3
pi r^2 h

//Wcone = specific weight * Vcone

function [v,w] = funcalc(d,h)

v = 1/3 * pi * (d/2)^2 * h ;

w = v * 62.4 ;

end

//In command window

[v,w] = funcalc(3,4)

Calculate the weight of a brass sphere in pounds. What formulas should you put in for specific weight
and weight? - ANSWERSVsphere = 4/3 pi r^3

Wsphere = volume * specific weight

, VLOOKUP = data in columns

HLOOKUP = data in rows

VLOOKUP(what you are looking up, data table range, what # column of data set, TRUE= exact match /
FALSE = approx. match)

A car's acceleration over 6 seconds is shown in the table below. Determine the velocity over this time
frame using the trapezoid method. - ANSWERSArea of Trapezoid = 1/2 * (y2+y1)*(x2-x1)

Sum Areas = Car's velocity over time frame

Determine the value of A after each script is executed in MATLAB. How many times is the loop executed?

A=0;

for i = 1:5

A = A + 5;

end

A - ANSWERSA = 25

executed 5 times

Determine the value of A after each script is executed in MATLAB. How many times is the loop executed?

for m = 1:3

A(m) = 5*m;

if A(m) <= 25

A(m) = 0;

end

end

A - ANSWERSA = 0

executed 3 times

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