O que são Máquinas Simples? a) São máquinas que realizam várias funções de uma vez
b) São máquinas fáceis de serem montadas
c) São máquinas que modificam e transmitem a ação de uma força para realizar algum movimento
d) É uma barra rígida que pode girar sobre um ponto de apoio
e) São máquinas que possuem dispositivos eletrônicos em sua composição

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.

Which material is commonly used as a culture medium for living cells

Which of the following is most likely the result of an organism having lipids in its body a) water cannot be absorbed through the surface of a leaf b)human eats fruits to get a quick source of energy c) a sheep sleeps for more hours in the winter d) a warm river is filled with fish and algae