Answer:
Water freight is a very important method of transportation and is the second cheapest (railroad is the cheapest). Huge volumes can be shipped at relatively low prices which is extremely important for raw materials and commodities.
The problem with water freight is that it is relatively slow though. Another problem that water freight faces is that it is cheap for medium and long distances, but uneconomical for short ones.
A great impediment for the technological progress of water freight is that most ports are obsolete and have not been updated in many years. Updating them is very expensive and many of them are public ports which doesn't help either.
Most new carrier ships (which are very high tech) are probably too big to fit into most US ports, so even if a carrier company invests huge amounts of money in them, where will they them? Technological progress must start with the ports, then water carriers should improve.
Another problem is that regulation is very loose in the US, especially regarding maritime ports.
Answer:
D. his fixed amount of psychic energy
Explanation:
Answer:
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The price elasticity of a good will tend to be larger if the fewer number of substitute goods will be available.
The cross elasticity of demand for substitute goods is always positive because the demand of one good increases at the time when the price for the substitute good increases however the cross elasticity of demand for complementary goods is always negative.
For example, if the price of coffee rises, the quantity demanded for tea which is the best substitute of coffee beverage will increase as consumers will switch to a less expensive but the substitutable alternative.
This is reflected in the cross elasticity of the demand formula, as both the numerator which is the percentage change in the demand of tea and denominator which is the price of coffee shows a positive increase.
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