People often work long hours even when their professional or financial situation would enable them to dial back. a key concept in this context is that of the opportunity cost of leisure. how is this concept best explained?

Opportunity cost is what is given up to obtain something, or the cost of doing something instead of another thing.

The opportunity cost of leisure would be best explained as the monetary value of time spent not working, or in other words, the income that is not received when you are not working.

For example, if a person works 8 hours a day, five days a week, making $20/hour, he will earn, by the end of the week, a total of $800 dollars. However, if he decides to cut back his hours in order to go to swimming classes in the afternoon, and now works 6 hours a day, five days a week, he will now make $600 dollars, so the opportunity cost of leisure for him is $200 dollars.

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.

na idade média, existia o santo ofício, responsável pela censura. hoje em dia, em um país democrático, temos algo que se assemelha a essa medida que é quando o governo impõe censura a um indivíduo ou meio de comunicação.

por constituição:

"art. 5º da constituição federal - inc. ix - é livre a expressão da atividade intelectual, artística, científica e de comunicação, independentemente de censura ou licença;

liberdade de expressão a garantia assegurada a qualquer indivíduo de se manifestar, buscar e receber ideias e informações de todos os tipos, com ou sem a intervenção de terceiros, por meio de linguagens oral, escrita, artística ou qualquer outro meio de comunicação. "

esse direito da constituição, quando contrariado, é o mais próximo ao julgamento político de obras e ações da antiguidade.