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1) Suppose a charge q is placed at point x = 0, y = 0. A second charge q is placed at point x = 7.4 m, y = 0. What charge Q must be placed at the point x = 3.7 m, y = 0 in order that the field at the point x = 3.7 m, y = 4.5 m be zero? Q = answer in q 2) An electron (q = -1.602 10-19 C) is projected... show more 1) Suppose a charge q is placed at point x = 0, y = 0. A second charge q is placed at point x = 7.4 m, y = 0. What charge Q must be placed at the point x = 3.7 m, y = 0 in order that the field at the point x = 3.7 m, y = 4.5 m be zero?
Q = answer in q

2) An electron (q = -1.602 10-19 C) is projected horizontally into the space between two oppositely charged metal plates. The electric field between the plates is 547.5 N/C, directed up.
(a) While in the field, what is the force on the electron?
magnitude: answer in N

(b) If the vertical deflection of the electron as it leaves the plates is 3.80 mm, how much has its kinetic energy increased due to the electric field?
answer in J

3) A conducting sphere is placed within a conducting spherical shell as shown in the figure below. The conductors are in electrostatic equilibrium. The inner sphere has a radius of 1.50 cm, the inner radius of the spherical shell is 2.25 cm, and the outer radius of the shell is 2.75 cm. The inner sphere has a charge of 275 nC, and the spherical shell has zero net charge.

(a) What is the magnitude of the electric field at a point 1.75 cm from the center?
answer in N/C

(b) What is the electric field magnitude at a point 2.50 cm from the center? [Hint: What must be true about the electric field inside a conductor in electrostatic equilibrium?]
answer in N/C

(c) What is the electric field magnitude at a point 3.00 cm from the center?
answer in N/C

please help me out with these questions..i really need help to understand this questions in order for me to understand physics for my oncoming exam...please show steps...best answers will get 10 pts..thank you very much greatly aprreciated
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