A continuous line of charge lies along the x axis, extend- ing from x + x to positive infinity. The line carries a uniform linear charge density A. What are the magni- tude and direction of the electric field at the origin?

A roller coaster moves 200 ft horizontally and then rises 135 ft at an angle of 30.0° above the horizontal. Next, it travels 135 ft at an angle of 40.0° below the horizontal. Use graphical techniques to find the roller coaster’s displacement from its starting point to the end of this movement.

A -12 nC charge is located at  (x,y)=(1.0 cm, 0 cm). What is the electric field at the position (x1,y1)=(5.0 m, 0c cm), (x2,y2)=(-5.0 cm, 0 cm) and   (x3,y3)=(0 cm, 5.0 cm) in component form?Enter the xand y components of the electric field in newtons per coulomb separated by a comma.

A long straight wire has fixed negative charge with a linear charge density of magnitude 4.8 nC/m. The wire is to be enclosed by a coaxial, thin-walled, nonconducting cylindrical shell of radius 1.2 cm. The shell is to have positive charge on its outside surface with a surface charge densitys that makes the net external electric field is zero. Calculate s.