Em relação às linhas de força dos campos elétricos, assinale o que for incorreto: * as linhas de força das cargas elétricas pontuais são radiais.
as linhas de força do campo elétrico das cargas pontuais de sinal positivo são radiais e apontam para o centro da carga.
quanto maior a concentração de linhas de força em uma região do espaço, maior é o módulo do campo elétrico.
as linhas de força são formadas pela componente tangencial dos campos elétricos de cada ponto.
as linhas de força são imaginárias e usadas para ilustrar a direção e o sentido do campo elétrico.

Acriterion for waiving informed consent is that, when appropriate, subjects are provided additional pertinent information after the study. in which of the following studies would it not be appropriate to provide subjects with information about missing elements of consent: a study in which researchers told students that they would be given a quiz after reading some study materials when the researchers did not intend to use a quiz, but were attempting to focus subjects’ attention on the material.a study in which subjects were told that they performed in the third quartile on an anagram task when in reality students were randomly assigned scores that were not related to their actual performance.a study in which subjects were assigned to study activities based on an undesirable or unflattering physical characteristic as assessed by members of the research team.a study involving decision-making games in which subjects were led to believe that they were interacting with another student in another room, but were actually interacting with a computer programmed to provide consistent responses to all subjects.

In a small, closed economy, national income (gdp) is $350 million for the current year. individuals have spent $100 million on the consumption of goods and services. they have paid a total of $60 million in taxes and the government has spent $75 million on goods and services this year. use this information and the national income identity to answer the questions. how much does the economy spend on investment?

Recently, there has been pressure to loosen clean air standards. use economic arguments to support or oppose this proposed action.