As you are leaving a building, the door opens outward. If the hinges on the door are on your right, what is the direction of the angular velocity of the door as you open it?
A) up
B) down
C) to your left
D) to your right
E) forwards
Answer: B
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Flue gases at 700ºC pass over a bank of superheater tubes at 6 m/s. The tube bank is composed of 20 columns of 2 cm diameter tubes with 40 tubes per column. The arrangement of the tubes is staggered as shown in the figure with ST = SD = 4.0 cm. Determine the pressure drop across the tube bundles, assuming that the tubes have an average surface temperature of 500ºC.
Define chunked text and explain the importance of writing scannable text for webpages.
What will be an ideal response?
What is the greatest mass a newborn star can have
A) 10 solar masses. B) 20 solar masses. C) 50 solar masses. D) a few hundred solar masses.
How much heat, in joules, is required to convert 1.00 kg of ice at 0°C into steam at 100°C? (LF,ice = 333 J/g; LV,steam = 2.26 × 103 J/g.)
A. 3.35 × 105 B. 4.19 × 105 C. 2.36 × 106 D. 2.69 × 106 E. 3.01 × 106