Under normal conditions, the electric field at the surface of the Earth points downward, into the ground. What is the sign of the electric charge on the ground?
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ground. What is the sign of the electric charge on the ground?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faf65b1ab-ff4b-448c-8640-a3b40361f8da%2Fb830a8d4-7c97-44c0-8cdf-8542aca789be%2Fk6l67oq_processed.png&w=3840&q=75)
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- (a) Find the magnitude and direction of the net electric field at point P. For direction, give the angle counterclockwise from the positive x-axis. Draw the electric fields created by q1, q2 , and the net electric field in the diagram above. (b) Suppose a particle with charge -6.3 microC and mass 1.5 * 10 ^ - 27 kg, is placed at point P. Find the magnitude and direction of the acceleration of that particle. For direction, give the angle counterclockwise from the positive x-axis.A small object of mass 3.94 g and charge −18.4 μC is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. What are the magnitude and direction of the electric field? magnitude N/C direction ---Select--- West downward East upwardConsider an electric field perpendicular to a table top. When a small charged object of mass 4.18 g and charge -17 µC is carefully placed in the field, the object is in static equilibrium. What are the magnitude and direction of the electric field? (Give the magnitude in N/C.) magnitude N/C direction downward
- Two equal positive charges (10 μC) are arranged at the base of an equilateral triangle of sides 20 cm. What is the electric field at the top vertex of the triangle? What is the direction of the electric field?A particle has charge of -3.00 nC. (a) Find the magnitude and direction of the electric field due to this particle at a point 0.250 m directly above it. (b) At what distance from this particle does its electric field have a magnitude of 12/0 N/C?You charge a piece of aluminum foil (mass = 2.94 g) by touching it to a charged rod. The charged rod gives the aluminum foil a charge of −13 µC. Your professor brings a charged plate over and tells you to put the aluminum foil on top of the plate. To your surprise the aluminum foil hovers motionless in the air above it! Calculate the value of the electric field from the charged plate (assume it is a uniform field and the aluminum foil is a point charge). magnitude N/C direction ---Select--- upward downward left right
- A point charge located at the origin generates an electric field that has the value E = (830 N/C) i + (150 N/C) j at the point (x, y) = (2.50 m, 3.20 m). What is the value of the charge?The figure shows two points near to two charges. Compare the electric field strengths E1 and E2 at these two points. Is E1 > E2 , E1 = E2 , or E1 < E2 ?The figure below shows a small, charged sphere, with a charge of q = +45.0 nC, that moves a distance of d = 0.182 m from point A to point B in the presence of a uniform electric field E of magnitude 255 N/C, pointing right. (a) What is the magnitude (in N) and direction of the electric force on the sphere? magnitude Ndirection ---Select--- toward the right toward the left The magnitude is zero. (b) What is the work (in J) done on the sphere by the electric force as it moves from A to B? J (c) What is the change of the electric potential energy (in J) as the sphere moves from A to B? (The system consists of the sphere and all its surroundings.) PEB − PEA = J (d) What is the potential difference (in V) between A and B? VB − VA = V