©SIRJOEL EXAM SOLUTIONS
12/3/2024 11:27AM
ENGR 103 FINAL Exam Questions With
Correct Answers
A ladder leans against a building. The base of the ladder is 6 feet located from the building. The
ladder reaches a vertical height of 15 feet on the building. What is the length of the ladder? -
answer✔16 Feet
A cube has a side length of 10.5 m. What is the length of the diagonal from the bottom front left
hand corner to the top back right corner - answer✔18.2 m
Convert 6840 kcal/cm^3 to Btu/ft^3 - answer✔7.69*10^8 Btu/ft^3
Convert 52.0 mph to mm/s - answer✔2.32*10^4 mm/s
Which of the following is correct (true) with respect to dimensions?
A. The 7 fundamental dimensions are meter, second, kilogram, Celsius, mole, ampere, and
Candela.
B. Dimensions and units are synonymous terms in science and engineering .
C. The use of dimensions comes from uncertainty in engineering measurements used to make
calculations.
, ©SIRJOEL EXAM SOLUTIONS
12/3/2024 11:27AM
D. Two terms can be multiplied even if they are not dimensionally homogeneous.
E. If two terms in an expression have the same dimensions, they must have the same units. -
answer✔D. Two terms can be multiplied even if they are not dimensionally homogeneous.
What must the dimensions of a and k be in order to make equation 4M^3L^-2T=asin(kT^-2M)
dimensionally homogeneous? - answer✔a=M^3L^-2T^1
k=T^2M^-1
T/F The equation
R=(8u^2l)/(pi*r^3)
is dimensionally homogenous when given the following units for the variables.
R=kg/m^4*s
u=g/cm*s
l=ft
r=in - answer✔False
How many significant figures are in the number 0.002? - answer✔One
How many significant figures are in the number 10.00? - answer✔Four
How many significant figures are in the answer to 12.01 divided 2? - answer✔One
, ©SIRJOEL EXAM SOLUTIONS
12/3/2024 11:27AM
Which skill in the list should students expect from this class, based on the lectures to date?
A. Proficiency in AutoCAD
B. Learning to differentiate multivariable terms
C. Learning to formulate math
models of physical things to predict behavior.
D. Elementary Statistical analysis
E. Determining thermal equilibrium for conduction. - answer✔C. Learning to formulate math
models of physical things to predict behavior
Convert 43,836 Pascals to units of atm. - answer✔0.43263
The cross sectional area of the beam is 480 sq in. What is its cross-sectional are in sq meters?
Use engr sig figs for rounding. - answer✔3.10*10^-1 sq meters
An object has a mass of 5.39 slugs. What is its weight on earth in units of lbf (g=32.2 ft/s^2)? -
answer✔1.74*10^2 lbf
Convert 83 (kg*m^3)/s to (g*cm^2)/s - answer✔8.3 * 10^10 (g*cm^2)/s
What conversion factor converts force to mass? - answer✔Force cannot be converted to mass.
12/3/2024 11:27AM
ENGR 103 FINAL Exam Questions With
Correct Answers
A ladder leans against a building. The base of the ladder is 6 feet located from the building. The
ladder reaches a vertical height of 15 feet on the building. What is the length of the ladder? -
answer✔16 Feet
A cube has a side length of 10.5 m. What is the length of the diagonal from the bottom front left
hand corner to the top back right corner - answer✔18.2 m
Convert 6840 kcal/cm^3 to Btu/ft^3 - answer✔7.69*10^8 Btu/ft^3
Convert 52.0 mph to mm/s - answer✔2.32*10^4 mm/s
Which of the following is correct (true) with respect to dimensions?
A. The 7 fundamental dimensions are meter, second, kilogram, Celsius, mole, ampere, and
Candela.
B. Dimensions and units are synonymous terms in science and engineering .
C. The use of dimensions comes from uncertainty in engineering measurements used to make
calculations.
, ©SIRJOEL EXAM SOLUTIONS
12/3/2024 11:27AM
D. Two terms can be multiplied even if they are not dimensionally homogeneous.
E. If two terms in an expression have the same dimensions, they must have the same units. -
answer✔D. Two terms can be multiplied even if they are not dimensionally homogeneous.
What must the dimensions of a and k be in order to make equation 4M^3L^-2T=asin(kT^-2M)
dimensionally homogeneous? - answer✔a=M^3L^-2T^1
k=T^2M^-1
T/F The equation
R=(8u^2l)/(pi*r^3)
is dimensionally homogenous when given the following units for the variables.
R=kg/m^4*s
u=g/cm*s
l=ft
r=in - answer✔False
How many significant figures are in the number 0.002? - answer✔One
How many significant figures are in the number 10.00? - answer✔Four
How many significant figures are in the answer to 12.01 divided 2? - answer✔One
, ©SIRJOEL EXAM SOLUTIONS
12/3/2024 11:27AM
Which skill in the list should students expect from this class, based on the lectures to date?
A. Proficiency in AutoCAD
B. Learning to differentiate multivariable terms
C. Learning to formulate math
models of physical things to predict behavior.
D. Elementary Statistical analysis
E. Determining thermal equilibrium for conduction. - answer✔C. Learning to formulate math
models of physical things to predict behavior
Convert 43,836 Pascals to units of atm. - answer✔0.43263
The cross sectional area of the beam is 480 sq in. What is its cross-sectional are in sq meters?
Use engr sig figs for rounding. - answer✔3.10*10^-1 sq meters
An object has a mass of 5.39 slugs. What is its weight on earth in units of lbf (g=32.2 ft/s^2)? -
answer✔1.74*10^2 lbf
Convert 83 (kg*m^3)/s to (g*cm^2)/s - answer✔8.3 * 10^10 (g*cm^2)/s
What conversion factor converts force to mass? - answer✔Force cannot be converted to mass.
