Relative to the focal length of a wide-angle camera lens, the focal length of a telephoto lens is
A) shorter.
B) the same.
C) longer.
D) Any of theses choices could be correct, depending on the camera.
Ans: C) longer.
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In the Northern Hemisphere, the Coriolis force causes all free-moving objects in the air to curve
A) to the left of their intended path. B) to the right of their intended path. C) counterclockwise to their intended path. D) clockwise to their intended path.
If the outer air temperature in Problem 1.11 is –2°C, calculate the convection heat transfer coefficient between the outer surface of the window and the air assuming radiation is negligible.
GIVEN
• Window: 1 m by 3 m
• Thickness (L) = 7 mm = 0.007 m
• Surface temperatures
? Inner (Ti) = 20°C
? outer (To) = 17°C
• The rate of heat loss = 1040 W (from the solution to Problem 1.11)
• The outside air temperature = –2°C
FIND
• The convective heat transfer coefficient at the outer surface of the window ( h c)
ASSUMPTIONS
• The system is in steady state and radiative loss through the window is negligible
SKETCH
Instructions: On occasion, the notation 
will be a shorthand notation for 
.
If two collinear vectors 
and 
are added, the resultant has a magnitude equal to 4.0. If is subtracted from , the resultant has a magnitude equal to 8.0. What is the magnitude of ?
A. 2.0
B. 3.0
C. 4.0
D. 5.0
E. 6.0
The Sun is located at the edge of the galaxy, approximately 50,000 light-years from the galactic center
Indicate whether the statement is true or false