Acid deposition is decreasing due to the decrease in sulfur emissions, so acid rain problems should disappear soon
What will be an ideal response?
The use of scrubbers has reduced sulfur and particulate emissions, but the
emissions are still so large that the effects won't disappear anytime soon.
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Photographic plates are commonly used by astronomers today
a. True b. False Indicate whether the statement is true or false
A 160 lb person has a mass of 160/32 = 5 slugs. A 160 lb person steps into an elevator and stands on a bathroom scale. Determine the scale reading for the given scenarios. The elevator is accelerating downwards at 2 ft/s2
a. 150 lb c. 170 lb b. 160 lb d. none of the above
Electromagnetic waves with a wavelength of about 0.1 nm (about the size of an atom) are in which range?
A. Radio B. Microwave C. Infrared D. Visible E. Ultraviolet F. X-ray T. Gamma ray
Derive an equation in the form ch = f(T, D, U?) for flow of air over a long horizontal cylinder for the temperature range 0°C to 100°C, using as a basis.
GIVEN
• Flow over a long horizontal cylinder
• Air temperature range is 0°C < T < 100°C
FIND
• An equation in the form ch = f(T, D, U?) based on Equation (6.3)
ASSUMPTIONS
• Steady state
• Prandtl number variation is negligible
SKETCH
