Physics
Improve your experience by picking them
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?
Two electrons have a separation of 1.20 nm. They are both released simultaneously such that they are free to move. Determine the greatest acceleration and specify when it is observed.
A linear particle accelerator accelerates two hydrogen ions to equal speeds toward each other. If the speed at infinite separation is 6.2 × 105 m/s, determine the greatest electric force the two ions will exert on each other.
A thin, straight metal rod is bent to form a shape as shown below. The metal rod is uniformly charged with a linear charge density of λ. Determine the electric potential at point O.
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 placed on the x-axis. The first charge is +2.0 μC and is located 4.0 cm to the right of the origin. The second charge is -3.0 μC and is located 8.0 cm to the right of the origin. A third point charge is placed on the positive y-axis at a distance of 6.0 cm from the origin. What is the charge of the third point charge if the electric potential energy of the three charged particles is 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?
Consider a scenario in which a uniformly charged sphere of radius R has a total charge of Q. The potential difference ΔV between the potential at the sphere's center V0 and a point at radius r from the center is: ΔV = -Q / (4πεoR3) • (r2 /2). Determine the what the ratio Vo / VR will be, where VR represents the potential at the sphere's surface.
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?