Other things (density, altitude, temperature) being equal, a moving gas exerts less pressure than a stationary gas. This is predicted by ________ (2 words).
What will be an ideal response?
Bernoulli's equation
Bernoulli's Principle
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Uncertainty Principle Using Energy and Time: If the maximum possible accuracy in measuring the energy of a particle increases, the maximum possible accuracy in measuring its lifetime will
A. increase. B. decrease. C. not be affected.
If a cast iron has the UNS designation F2XXXX it is _________cast iron.
Fill in the blank(s) with the appropriate word(s).
The pressure in a gas:
A) depends on the temperature of the gas. B) does not depend on the density of the gas. C) does not depend on the volume of the gas. D) depends on the gravitational force on the gas.
A vertical rectangular water duct 1-m-high and 0.1-m-deep shown in the sketch is placed in an environment of saturated steam at atmospheric pressure. If the outer surface of the duct is about 50°C, estimate the rate of steam condensation per unit length.
GIVEN
? Water-cooled rectangular duct, 1-m-high, 0.1-m-deep
? Duct surface is 50°C
? Steam environment
FIND
(a) Rate of steam condensation per unit length of the duct
ASSUMPTIONS
? The steam is at 1 atmosphere pressure
? Condensation from the horizontal duct surfaces can be neglected
? Laminar film condensation on the vertical surfaces (must be checked)
SKETCH
PROPERTIES AND CONSTANTS
From Appendix 2, Table 13, the properties of saturated liquid at the mean temperature of 75°C are
From Appendix 2, Table 35, the properties of the saturated vapor at the saturation temperature of 100°C are
