Alarge positively-charged object with charge q = 5.25 μc is brought near a negatively-charged plastic ball suspended from a string of negligible mass. the suspended ball has a charge of q– = –53.3 nc and a mass of 12.5 grams. what is the angle the string makes with the vertical when the positively charged object is 20.5 cm from the suspended ball? the positively-charged object is at the same height as the suspended ball.

Aflower pot weighing 3 newtons is sitting on a windowsill 30 meters from the ground is the energy of the flower pot potential or kinetic? how many joules is this

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth's center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.