The appearance and arrangement of characters commonly is referred to as _______.
A. type
B. text
C. typeset
D. track
Answer: A
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One light-year is the distance light travels in one year. The speed of light is about 300,000 km/s (3 × 105 km/s). How far is 1 light-year?
A) 3 × 105 km B) 1.8 × 107 km C) 1.08 × 109 km D) 9.46 × 1012 km
In general, a common magnet has
A) one pole. B) at least two poles. C) only two poles.
Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. Sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. Which one, if either is correct?
a. Beryl, because low thermal conductivity results in low heat transfer. b. Beryl, because low thermal conductivity results in high heat transfer. c. Sapphire, because low thermal conductivity results in low heat transfer. d. Sapphire, because low thermal conductivity results in high heat transfer. e. Neither, because low heat transfer is desirable both in summer and in winter.
Determine the overall thermal resistance per unit area for the wall shown in Figure 2-51. Exclude the thermal resistance due to convection heat transfer in the analysis. Then, if the heat transfer is expected to be 190W/m^2 and the exposed brick surface is 10ºC, estimate the temperature distribution through the wall.
