58. Are keeping global CO2 emissions constant at current level over the next several decades enough to eventually stabilize atmospheric CO2 concentration at 550 ppm and Explain why or why not? and how would global temperature and sea level respond to constant emissions?
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What is the cryosphere and how has this been affected by climate change? Why do scientists describe the changes in the cryosphere as positive feedback in the environment? How has this contributed to the rapid warming/polar amplification in the Arctic?
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Explain why the first observed rising of the bright star Sirius in the sky just before dawn happens at the same time each year. How did ancient Egyptians take advantage of this?
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1 .List THREE short-term and THREE long-term health effects that can occur when exposed to VOCs
2. Explain how the ozone layer is destroyed in the following ways:naturally and human activity
Edited by: Robert Bent, Lloyd Orr, and Randall Baker
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Because of environmental reasons, lead acid batteries will be converted to NickelCadmium (NI-CD) Batteries. Calculate theoretical efficiency change for the assuming all cells have same molar concentrations.
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On average, more solar energy falls in the equatorial regions than in desert regions. Why then are deserts hotter on average – as measured by the dry bulb temperature - than the tropics?
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Main reasons the United States came out from the World War 2 as the strongest superpower?
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How and why are concentrations of stratospheric ozone expected to change in the future?
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The air quantity at 25 oC and 80% RH required for complete combustion for refuse (dry basis) is 7.0 lb/10000 Btu. Air supplied for complete combustion is 30% in excess.
please find the volume of air at 25 oC and 80% RH needed for complete combustion (30% excess)
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Look at how precipitation and evapotranspiration vary globally, and find out why. Both are parts of climate and weather and must be related to atmospheric and oceanic circulation patterns, latitude, distance from the ocean, topography, vegetation and perhaps other factors. Examine the global maps of evapotranspiration, precipitation, and temperature (http://quebec.hwr.arizona.edu/classes/hwr201/infographics/). Look also at topography, for example by using google maps with “terrain” option switched on, and maybe also at wind patterns, ocean currents etc. Required: (a) Where is precipitation highest? Lowest? (b) Where is evapotranspiration highest? Lowest? (c) Explain why (use all available information: precipitation, evapotranspiration, temperature, topography, geography, winds, circulation)
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Osborn Reynolds discovered that the flow regime depends mainly on the ratio of the inertia forces to viscous forces in the fluid. With your own understanding and justification, analyze the effects of frictional factor to the boundary layer.
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Explain your answer.
Internal Energy (U); Enthalpy (H); Helmholtz Free Energy (A or
F); Gibbs Free Energy (G),
which one is most appropriate for a problem on
a) Explosions
b) Skin Permeation of Chemicals
c) Rubber Elasticity
d) Distillation Columns
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Use plate tectonic theory to explain the origin of Mount St. Helens (and by extension, the Cascades and all Andean-type mountains). Your answer should be no less than 500 words. In your answer, include a discussion of:
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Question: to conduct air separation based on cryogenic
distillation, consider the variety of column internals which may be
available from the main column vendors for an ASU. Which internals
would you recommend (giving the name of the vendor and the exact
recommended internals)? Justify your choice briefly.
Do not copy a reference from websites or offer wrong answer,
otherwise I will downvote, thanks.
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