Estimate the heat transfer from an object at 100ºF to a surface at 40ºF through a heat conducting media having thermal conductivity of 5 Btu/hr?ft?ºF if the shape factor is 1.0 ft.
What will be an ideal response?
Physics & Space Science
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How long does it take light to travel through a 3.0 mm thick piece of glass?
What will be an ideal response?
Physics & Space Science
If the speed of light is represented by c, what equation would you use to determine the distance light travels, x, in a time t?
A. x=c*t B. x=c/t C. x=c+t D. 1/x = c*t
Physics & Space Science
In the circuit segment shown if I = 7 mA and Q = 50 µC, what is the potential difference, VA – VB?
a.
?40 V
b.
+40 V
c.
+20 V
d.
–20 V
Physics & Space Science
The vector sum of three co-planar forces
a. must be zero. b. must be perpendicular to one of the three. c. must be parallel to one of the three. d. must be perpendicular to the plane. e. may have any direction in the plane.
Physics & Space Science