Consider two fluids, one with a large coefficient of volume expansion and the other with a small one. In what fluid will a hot surface initiate stronger natural convection currents? Why? Assume the viscosity of the fluids to be the same.
What will be an ideal response?
The greater the volume expansion coefficient, the greater the change in density with temperature, the greater the buoyancy force, and thus the greater the natural convection currents.
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One disadvantage of the tracking A/D converter is ________
A) it requires two counters: one for up and one for down B) the need for a latch and its associated control circuit C) the binary output will oscillate between two binary states when the analog input is constant D) the need for an accurate clock reference for the counter
The ideal angle for the welding torch is ____ degrees.
A. 0 B. 45 C. 90 D. 180
A sample of size 101 from a normal population has sample standard deviation s = 40. The lower and upper 0.025 points of the 
distribution are and 
. Use these values to construct a 95% confidence interval for ?.
What will be an ideal response?
The short drive shafts or axles used on front-wheel drive (FWD), four-wheel drive (4WD), and rear-wheel drive (RWD) with independent rear suspension are called _____.
A. half shafts B. two-piece shafts C. split shafts D. short shafts