Why do you suppose water has been such a popular heat transfer material (steam heat, hot water systems, etc)?
What will be an ideal response?
It is readily available, but more importantly, it has a relatively large heat capacity and latent heat values. Hence, it can store large quantities of heat to be transferred elsewhere.
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Which of the following is NOT true about color and visual contrast in web design?
A. Webpages can use color to evoke mood. B. Limit your website color scheme to five or six contrasting colors. C. The WAI specifies that color contrast should be sufficient for visitors using a monochrome monitor. D. One way to select an appropriate color scheme is to use a template.
An increase of 20 dB increases the sound intensity by a factor of
a. 10. b. 200. c. 100. d. 20.
A particle is moving at constant velocity. Its position at t = 1.0 s is 3.0 m and its position at t = 4.0 s is 15.0 m. What is the slope of the position-time graph for this particle?
a. 0, since this is a constant velocity situation. b. 4.0 m/s c. 4.0 m/s2 d. 9.0 m/s e. 12 m/s2
In which type of collision is no kinetic energy lost?
A. A perfectly elastic collision B. A perfectly inelastic collision C. A partially inelastic collision D. Energy is always conserved