Two charged particles are moving with equal velocities of 2.30 m/s in the +x-direction. At one instant of time the first particle with a charge of -2.50 µC is located at x = 0 and y = +8.70 cm, and the second particle with a charge of 7.80 µC is located at x = 0 and y = -8.70 cm. 1. What is the y-component of the magnetic force on the first particle due to the second?

2. How fast would the charges have to be moving for the magentic force to be equal in magnitude to the electric force?

More solar radiation is absorbed by earth’s surface than by

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical