016 (UMC-SP) Um aluno do curso de engenharia mecânica da UMC deseja medir a temperatura de um forno utilizando uma barra metálica de comprimento igual a 1 m, que se encontra inicialmente a 22 °C. A barra é introduzida no forno e, ao ser retirada, o aluno verifica que o seu comprimento passa a ser 1.01 m. Sabendo que a variação de comprimento (/L) é diretamente proporcional à variação de temperatura (/t) e ao comprimento inicial (L0), pede-se determinar a temperatura do forno, Dado: Coeficiente de dilatação linear do metal 10. 10-6

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Name two kinds of practical electric pumps.