A5.5-hc point charge is located at x-0.9 m, y3.4 m, and a -3.9-hc point charge is located at x- 2.1 m, y 2.2 m (a) find the magnitude and direction of the electric field at x3.3 m, 0.9 m. magnitude direction kn/c (b) find the magnitude and direction of the force on a proton at x 3.3 m, y-0.9m

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?