Acharge -364e is uniformly distributed along a circular arc of radius 6.10 cm, which subtends an angle of 56o. what is the linear charge density along the arc? (b) a charge -364e is uniformly distributed over one face of a circular disk of radius 4.70 cm. what is the surface charge density over that face? (c) a charge -364e is uniformly distributed over the surface of a sphere of radius 5.00 cm. what is the surface charge density over that surface? (d) a charge -364e is uniformly spread through the volume of a sphere of radius 4.10 cm. what is the volume charge density in that sphere?

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.