Car B is traveling twice as fast as car A, but car A has twice the mass of car B. Which car has the greater kinetic energy and by what factor is it greater?
Car B, greater by a factor of 2
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Determine the difference equations applicable to the centerline and at the surface of an axisymmetric cylindrical geometry with volumetric heat generation and convection boundary condition. Assume steady-state conditions.
GIVEN
Axisymmetric, steady, cylindrical geometry with volumetric heat generation and surface
convection boundary condition
FIND
(a) Difference equations for the centerline and surface
SKETCH
Where would you be if the Sun passes directly overhead on December 21st?
A) Equator B) Tropic of Cancer C) Tropic of Capricorn D) Antarctic Circle E) South Pole
The circuit below contains 4 100-W light bulbs. The emf is 110 V. Which light bulb(s) is(are) brightest?
a.
A
b.
B
c.
C
d.
D
e.
C and D
Plane polarized light of intensity 
is passed through two polarizers, the first one at 45 
more so that it is perpendicular to the original plane of polarization. What intensity is transmitted?
A. 0.50 
B. 0.35
C. 0.25
D. 0.13
E. 0