(a) Three point charges are located on the circumference of a circle of radius r, at the angles shown in the figure. 270° E 150° 30° 19 -x Ⓡ What is the electric field at the center of the circle due to these point charges? (Express your answer in vector form. Use the following as necessary: ker q, and r.)

Give an expression for the electric field strength ?E at a point in terms of the charge ?q and distance ?r from the charge to that point. Use ?k for 14??014πε0 (i.e. ?≡14??0k≡14πε0).   Use the following notation (without the quotes): "/" for division,  "*" for multiplication, "+" an "-" as usual. For powers used "^2", while for square root use "sqrt". To indicate that square root applies to the whole expression use brackets - for example, for ??‾‾‾‾√AB use sqrt(A*B). For Greek letters such as ?π, ?α etc. use pi, alpha. For example to get 1??2???‾‾‾‾√1πA2BAB use 1/pi*A^2/B*sqrt(AB). Please use the exact variables given in the conditions of the problem: e.g if ?L is given, then do not use ?l.

the point charges are located at the corners of an equilateral triangle 24cm on a side. find the magnitude of the electric field. in newtons per coulomb at the center of the triangle configuration of charges given that Qa=2.9 nC, Qb+-8.9nC, and Qc=1.7nC,also find the direction of the electric fieldin degrees below the right  pointing horizontal

A total charge of Q = 60 microC is split into three equal point charges located 120 deg apart on a circle defined by a radius of 4 [m] and lying in the x-y plane. Find the magnitude of the electric field at the center of the three charges. Please, provide a detailed answer with explanation and drawings to understand. Thank you in advance!

(a) Determine the electric field strength at a point 1.00 cm to the left of the middle charge shown in the figure below. (Enter the magnitude of the electric field only.) (b) If a charge of −6.49 µC is placed at this point, what are the magnitude and direction of the force on it?

This is an approximate model of a water molecule. Point charges q1 and q2 of -1.00 x 10-19 C and 1.00 x 10-19 C, respectively, are placed 0.600 x 10-12 m apart. Thus d = 0.300 x 10-12 m in fig. 2 below, D= 0.600 x 10-12 m At point b, what must be the y-component Eynet of the net electric field due to the two charges? Show work.  At point b, what is the x-component Exnet of the net electric field due to the two charges? At point b, what is the direction of the net electric field due to the two charges? Indicate this direction by drawing an arrow in fig. 2 with its tail at point b. At point b, what is the magnitude of the net electric field due to the two charges? What is the relationship between your answer here and your answer to part (e)?