General
Where is the National NSBE Conference?
Detroit, Michigan
What is the Force required to move a 10 Kg box at constant Velocity for 11 seconds over 5 meters ?
constant velocity: a = 0
F = ma
derive Tan(3x)
3sec2(3x)
The boiling point of Copper is 2562°C and the melting point is 1083°C. What is the freezing point of Cu?
1479 degrees
_______ is the closest thing to magic that exists in this world.
by _________
Engineering
-Elon Musk
How many people founded NSBE?
6 people
if a cannon is fired perfectly upwards with an initial velocity of 50 m/s, calculate the maximum height it will get to before dropping. Neglect air resistance
conservation of energy
1/2 m v^2 = m g h
h = v^2 / (2 g)
h = 127.42 m
If f is a linear funtion 0<a<b then the second derivative from a to b is
A b-a
B 0
C (ab)/2
D 1
B. 0
What is the value of higher heating value if the value of lower heating value is 10 J and the product has 5 mole of H2O and Enthalpy of vaporization is 4 J/mole at standard conditions?
30 J
State Kirchoff's voltage law
voltage law states that for a closed loop series path the algebraic sum of all the voltages around any closed loop in a circuit is equal to zero.
What university was NSBE founded at?
Purdue University
A boy jumps on a giant spring with a velocity of 2 m/s. Calculate how far the spring would compress by before bouncing back up.
K = 100 N/m
mass of boy = 50 Kg
Conservation of Energy
K.E + P.E = spring Energy
x = 10.2 m
what is the equation of the line tangent to the graph of y = cos(2x) at x=pi/4
A. y-1=-(x-pi/4)
B. y=-(x-pi/4)
C. y-1=-2(x-pi/4)
D. y=-2(x-pi/4)
D
How are enthalpies of streams calculated?
a) Relative to the reference state
b) Absolutely
c) Depends on the reaction
d) None of the mentioned
A
what is the value of A printed after the following commands
set A=16 && K=2
while K<=4
A=A/K
K=K+1
end ........................... A. 0.71 B. 2.83 C. 4.25 D. 408
A. 0.71
What does the NSBE Torch symbolizes?
Symbolizes our everlasting burning desire to achieve success as engineers in our present society.
What is the magnitude of the acceleration of a 5 Kg block sliding down a 300 incline plane. Take Uk = 0.25.
acceleration = 2.78 m/s2
what is the average value of cos x on the interval [-3,5] is
A. (sin 5-sin3)/8
B. (sin 5-sin3)/2
C. (sin 3-sin5)/2
D. (sin 3+sin5)/2
E. (sin 5+sin3)/8
(sin 5+sin3)/8
High __________ is an undesirable property for a good refrigerant.
a) specific heat
b) latent heat of vaporisation
c) viscosity
d) specific vapor volume
C
An industrial plant load is rated at 2.8 MVA at 0.7 pf of lagging. If a capacitor bank rated at 3MVA is added to the load. the new overall power factor of the system is most nearly?
A. 0.9 leading
B. 0.9 lagging
C. 0.6 leading
D. 0.6 lagging
What's NSBE's 2025 goal?
To increase the annual number of African American engineering bachelor's degrees recipients to 10,000
Two planets, Jupiter and Uranus are 2.1 X 10^12 meters apart, Find the magnitude of the gravitational force between them.
Mjupiter= 1.898 x 10^27 Kg
Muranus= 8.68 x 10^25 Kg
G = 6.67 x 10^-11
Newton's Law of Gravitation
F = ( G M1 M2)/ R2
F = 2.49 X 10^18 N
if y=2x-8. what is the minimum value of the product xy
A -16
B 0
C -8
D -4
a) The chamber process is preferred over contact process for producing 98 to 100% H2SO4 and various oleums.
b) non-catalytic and operates only on pyrites.
c) a batch process for directly producing high strength (98 to 100%) H2SO4.
d) none of these.
D
The Pressure gage in air cylinder reads 1680 kPa. The cylinder is constructed of a 12-mm rolled-steel plate with an internal diameter of 700mm. The tangential stress(MPA) inside the tank is most nearly.
hint: tangential stress is directly proportional to the pressure and radius but inversely to the thickness.
A. 25
B. 50
C. 77
D. 100
49.8Mpa