Astraight, nonconducting plastic wire 9.50 cm long carries a charge density of 135 nc/m distributed uniformly along its length. it is lying on a horizontal tabletop.

a) find the magnitude of the electric field this wire produces at a point 4.00 cm directly above its midpoint.

b) find the direction of this electric field.

c) if the wire is now bent into a circle lying flat on the table, find the magnitude and direction of the electric field it produces at a point 4.00 cm directly above its center.

d) find the direction of this electric field.

Aprojectile is launched from ground level with an initial velocity of v 0 feet per second. neglecting air resistance, its height in feet t seconds after launch is given by s equals negative 16 t squared plus v 0 t. find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when v 0equals112 feet per second. (a) find the time(s) that the projectile will reach a height of 192 ft when v 0equals112 feet per second. select the correct choice below and, if necessary, fill in the answer box to complete your choice.

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .

Which situation will produce the greatest change of momentum