What is the reason cities buy water rights from farmers? Is this a good or a poor way to address the problems?

What will be an ideal response?


Agriculture uses the lion's share of water. It is also wasteful in its water use. In
addition, agricultural water is heavily subsidized by the federal dam-building programs of
the past. In earlier days, the typical recipient was a family farm, while today mechanized
agriculture is reaping these subsidies.
Water used to drink or clean is not wasted and is almost always cleaned in treatment plants
before being released back to streams and rivers. Agriculture can make up the water by
using what water remains more efficiently or not produce as much as the case may be, but
the use by cities will be more efficient no matter what.

Physics & Space Science

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Heat is:

A. energy transferred by virtue of a temperature difference B. energy transferred by macroscopic work C. energy content of an object D. a temperature difference E. a property objects have by virtue of their temperatures

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A voltage has been applied across a capacitor. If the dielectric is replaced with another dielectric constant eight times as great and the voltage is reduced to half of what it was, the ENERGY STORED in the capacitor is how many times the original

stored energy? A) 4 B) 1/4 C) 8 D) 1/2 E) 2

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The impact of a 100 meter asteroid could kill many people if it struck a major city. Suppose the probability of such an impact in any single year is 1 in 1,000, and suppose we know (somehow) that it has been 1200 years since the last impact

What would that tell us? A) The prediction must be wrong, since the time since the last impact has been 1200 years. B) Nothing, we would still presume that the chance of such an impact during the next year is 1 in 1000. C) We are overdue for such an impact, so we should expect to be hit by something even larger during the next few years. D) We are now due for such an impact, so the actual probability for the coming year must be much higher than 1 in 1000.

Physics & Space Science

A horizontal force of 100 N is applied to move a 45-kg cart across a 5.0-m level surface. What work is done by the 100-N force?

a. 405 J b. 500 J c. 900 J d. 4500 J

Physics & Space Science