Physics
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A point charge q = -2.80 μC has a fixed position. A tiny ball of mass 8.00 g is charged Q = -6.20 μC and shot toward the point charge. When the ball is 75 cm from the point charge, its speed is 17.0 m/s. What is the speed of the ball when it is 35 cm from the point charge? Treat the ball as a point charge and ignore weight.
In an attempt to merge two hydrogen ions into a single atom, the separation of the ions is changed slowly from 1.1 × 10-11 m to 2.0 × 10-15 m. a) Calculate the work done in changing the separation. b) The ions slip from rest and start moving away from each other. What's their speed when the separation is 1.1 × 10-11 m?
There are two point charges on the y-axis. One has a charge of -3.0 μC and is located 4.0 cm above the origin. The other has a charge of +5.0 μC and is located 7.0 cm above the origin. A third point charge with charge +4.0 μC is placed on the x-axis at a distance of 6.0 cm in the positive direction of the x-axis from the origin. What is the potential energy of this group of charges?
There are two charged particles on the x-axis. One has a charge of -5.0 nC and is located 2.0 cm to the right of the origin. The other has a charge of +10.0 nC and is located 5.0 cm to the right of the origin. What is the electric potential energy of the two charged particles?
Two point charges are on the x-axis: +2.0 μC at 4.0 cm and -3.0 μC at 8.0 cm from the origin. Place a third charge on the y-axis 6.0 cm from the origin. Find the value of this charge to make the total electric potential energy of the system zero.
Two parallel metal plates are separated by a distance of 5.0 mm and have a potential difference of 100 V applied across them. A charged particle with a charge of +2.0 μC and mass of 1.25 x 10-13 kg is released from rest at the positive plate. What is the velocity of the particle just before it hits the negative plate?
In the proximity of a uniformly charged sphere, the electric potential at point S is determined to be 60 V. Moving 3.0 μm away from point S to point T; the potential has decreased by 0.24 mV. Determine the distance between point S and the center of the sphere.
Calculate the potential difference between two points on the y-axis at -3 cm and 4 cm if you're at a science museum where a uniform electric field is demonstrated with a strength of Ē = (10,000î-40,000ĵ) V/m.
Sarah has a small sphere with a charge of -4.0 nC, and Alex has another small sphere with a charge of +5.0 nC. Sarah's sphere is at y= -8.0 cm, while Alex's sphere is at y=14.0 cm on the y-axis. On the x-axis, at what points does the electric potential become zero?
A flat, infinitely large plane with a surface charge density of -2.9×10−6 C/m² attracts an alpha particle propelled away from it at an initial velocity of 1.6×106 m/s. How far does the particle travel before being drawn back toward the plane?
Four point charges are arranged as shown in the figure. Determine the electric potential energy of the arrangement.
Consider two negative point charges separated by a distance of 8.00 cm. Determine the magnitude of the electric force between the two charges if the electric potential energy is 120 μJ.