©SIRJOEL EXAM SOLUTIONS
12/3/2024 11:27AM
Engr 103 Test 1 Exam Questions With
Correct Answers
10 lbm x 12 ft/s^2= 120 lbm ft/s^2 - answer✔True
A golf ball with a mass of 0.05 kg on earth has a mass of 0.81 N on the moon if the moon's
gravity is 1.62 m/s2 - answer✔False (mass is always the same regardless of gravity)
When algebraically manipulating an equation, you should leave an equation in
symbolic terms for as long as possible before plugging in values - answer✔True
Know all types of lines for drawings - answer✔
gc is always equal to one - answer✔true (it is a conversion factor which is always =1)
An object will weigh exactly the same no matter where it is on earth - answer✔False (weight is
different with different g, g is not the same everywhere on earth)
An object will have the same mass no matter where it is in the universe - answer✔True
Dimensions are independent of units - answer✔True
Engineers use a rule of thumb that answers have ____significant figures. - answer✔3
, ©SIRJOEL EXAM SOLUTIONS
12/3/2024 11:27AM
The following equation is dimensionally consistent:
P=Fg/(2uD)
where P = pressure with base units of M/(t2L),
F = force with base units of ML/t2,
g = acceleration of gravity with units of L/t2
u = velocity with base units of L/t, and
D = diameter with base units of L - answer✔False M/t2L doesnt = M/t3
_______ are based upon known standards some of which are kept in special conditions
at specific science institutions.
a) Derived dimensions
b) Units
c) Base dimensions - answer✔B) Units
Convert 437°F into K - answer✔(437-32)/1.8=225
225+273=
498
Express the following in scientific notation:
12/3/2024 11:27AM
Engr 103 Test 1 Exam Questions With
Correct Answers
10 lbm x 12 ft/s^2= 120 lbm ft/s^2 - answer✔True
A golf ball with a mass of 0.05 kg on earth has a mass of 0.81 N on the moon if the moon's
gravity is 1.62 m/s2 - answer✔False (mass is always the same regardless of gravity)
When algebraically manipulating an equation, you should leave an equation in
symbolic terms for as long as possible before plugging in values - answer✔True
Know all types of lines for drawings - answer✔
gc is always equal to one - answer✔true (it is a conversion factor which is always =1)
An object will weigh exactly the same no matter where it is on earth - answer✔False (weight is
different with different g, g is not the same everywhere on earth)
An object will have the same mass no matter where it is in the universe - answer✔True
Dimensions are independent of units - answer✔True
Engineers use a rule of thumb that answers have ____significant figures. - answer✔3
, ©SIRJOEL EXAM SOLUTIONS
12/3/2024 11:27AM
The following equation is dimensionally consistent:
P=Fg/(2uD)
where P = pressure with base units of M/(t2L),
F = force with base units of ML/t2,
g = acceleration of gravity with units of L/t2
u = velocity with base units of L/t, and
D = diameter with base units of L - answer✔False M/t2L doesnt = M/t3
_______ are based upon known standards some of which are kept in special conditions
at specific science institutions.
a) Derived dimensions
b) Units
c) Base dimensions - answer✔B) Units
Convert 437°F into K - answer✔(437-32)/1.8=225
225+273=
498
Express the following in scientific notation:
