A +1.50 μC point charge is sitting at the origin. a.) What is the radial distance between the 500 VV equipotential surface and the 1000 VV surface? Express your answer with the appropriate units. b.) What is the distance between the 1000 VV surface and the 1500 VV surface? Express your answer in meters to three significant figures.

A 3.00-cm-diameter parallel-plate capacitor with a spacing of 0.900 mm is charged to 200 V. Part A What is the total energy stored in the electric field? Express your answer with the appropriate units. View Available Hint(s) HA Uc= Submit Part B Ug = Value Submit What is the energy density? Express your answer with the appropriate units. ► View Available Hint(s) μÀ H Value Units B Units ? ?

Two 1.70-cm-diameter disks spaced 2.00 mm apart form a parallel-plate capacitor. The electric field between the disks is 4.80×105 V/m. You may want to review (Pages 699-702). For help with math skills, you may want to review: Area Calculations for a Circle Mathematical Expressions Involving Squares Part A What is the voltage across the capacitor? Express your answer to two significant figures and include the appropriate units. V = Submit Part B V = HÅ Value Request Answer Submit An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.40x107 m/s. What was the electron's speed as it left the negative plate? Express your answer to two significant figures and include the appropriate units. μA Value Units Request Answer Units By ? ?

A capacitor is formed from two concentric spherical conducting shells separated by vacuum. The inner sphere has radius 10.0 cm , and the outer sphere has radius 16.5 cm . A potential difference of 140 V is applied to the capacitor. What is the energy density at r= 10.1 cm , just outside the inner sphere? What is the energy density at r = 16.4 cm , just inside the outer sphere?