Mude as frases abaixo da voz ativa para a passiva ou vice-versa. 1. Os alunos fazem exercícios.=
2. Os pratos foram postos na mesa por nós=
3. Os capítulos são lidos por Marta.=
4. Elas ajudaram João.=
5. O trabalho foi acabado por vocês.=
6. Maria foi vista por mim.=
7. O meu pai pagou a conta.=
8. Joaquim abriu a janela.=
9. Estudo a lição.=
10. Elas fecham a porta.=
11. Os filmes são vistos por vocês.=
12. Maria é ouvida por eles.=
13. O bandido é procurado pela polícia.=

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

It indicates no change in temperature and the process of matter changing its state