An important condition for the operation of the Falkirk Wheel is that
A) water in each caisson have the same depth.
B) ships carried are more or less equal in weight.
C) no water spill when a ship enters a caisson.
D) all of the above
E) none of the above
Answer: A
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Conduction: A rod, with sides insulated to prevent heat loss, has one end immersed in boiling water at 100°C and the other end in a water-ice mixture at 0°C. The rod has uniform cross-sectional area 7.05 cm2 and length 87 cm. The heat conducted by the rod melts the ice at a rate of 1.0 g every 11 seconds. What is the thermal conductivity of the rod? Recall that the heat of fusion of water is 3.34 × 105 J/kg.
Fill in the blank(s) with the appropriate word(s).
Speed is to velocity as distance is to
A) magnitude. B) acceleration. C) displacement. D) direction. E) temperature.
Which of the following is NOT true about the RGB color system?
A. The system combines the red, green, and blue light channels. B. The intensity level of each light channel is measured in values. C. The values range from 0 to 360. D. To ensure exact color specifications, use different values from the channels.
How are Newton's and Einstein's theories of gravity related?
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