Three charges are arranged in an equilateral triangle with sides of 4 cm. the coordinates and corresponding charge values are as follows: +4q at (-2,0); +2q at (2,0); -q at (0,a). the elementary charge of an electron is given by q = -1.602 x 10^-19 c.
a) determine the y-coordinate a of the third charge
b) determine the electric field at the centre of the equilateral triangle
c) determine the torque that acts on the dipole and the work done to align the dipole depicted in the picture the center of the equilateral triangle with the resulting field at the corner. the dipole exhibits a dipole

The sum of two numbers is 86, and their difference is 20. find the two numbers

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

Askateboard ramp is in the shape of a right triangle what is the height of the ramp