It takes nd/ (lambda*f) time or a short pulse of light to travel from one end of the glass to the other.
If we talk about free space, that is, vacuum, light travels at a speed of 3x10^8 m/s, yet inside a glass light travels at a speed of v= c/n, where v is the velocity of the light and n is the refractive index. Now,
v=d/t,
so t= d/v
t= d/ (c/n)= n*d/c
c= lambda*f
t= nd/(lambda*f)
here, d is the thickness of the block, t is the time required and c refers to speed of light.
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This case ruled to be unconstitutional for state officials to create school prayer or recitations in public schools because it violated the establishment clause.
I believe the answer is: Family structures are changing, but families remain important to American life.
The main reason of the changing structures is the increase in divorce rate, and non-monogamous relationship. In the past, almost all children only have one father and one mother. In recent years, children could have more than 2 parents or even only one (in case of single parenthood)
Consumers seek <u>convenience products</u> because they can be easily, quickly, and frequently purchased.
<h3><u>What are convenience products?</u></h3>
Convenience goods are regularly and hastily purchased by consumers without much thought or emotion. Gas, candy, magazines, newspapers, and magazines are among the most often used types of convenience goods.
These items typically have a base price that doesn't differ significantly from store to store. In other words, unless the price is far more than expected, the consumer won't give it any thought.
<u>For instance, </u>someone would not be alarmed if they went to buy a gallon of milk and the price was $3. However, someone would be surprised if they went to buy a gallon of milk and were charged $10–$15 for it.
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The silk road is important because of getting to see exotic customs which is connected through the trade routes. while they get to trade more items with other people (movement of goods) and brings cultures all around (ethno-culture)!
