person walks into a specially designed room where the ceiling and floor contain giant conducting plates that can be charged just like a capacitor. The height from ceiling to floor is 4 m. If the person is 60 kg and wears a specially designed suit that is charged to + 1 x 10^-3 C,   a) What is the potential difference V that is needed to levitate the person 0.5 m off the ground?   b) Would the air electrically breakdown with the

A professor designing a class demonstration connects a parallel-plate capacitor to a battery, so that the potential difference between the plates is 225 V. Assume a plate separation of d = 1.47 cm and a plate area of A = 25.0 cm². When the battery is removed, the capacitor is plunged into a container of distilled water. Assume distilled water is an insulator with a dielectric constant of 80.0. (a) Calculate the charge on the plates (in pC) before and after the capacitor is submerged. (Enter the magnitudes.) before after AV f (b) Determine the capacitance (in F) and potential difference (in V) after immersion. Cf= = = (c) Determine the change in energy (in nJ) of the capacitor. AU = nJ AV f (d) What If? Repeat parts (a) through (c) of the problem in the case that the capacitor is immersed in distilled water while still connected to the 225 V potential difference. Calculate the charge on the plates (in pC) before and after the capacitor is submerged. (Enter the magnitudes.) before after…

An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm², separated by a distance of 1.50 mm. A 25.0- V potential difference is applied to these plates. (a) Calculate the electric field between the plates. |kV/m (b) Calculate the surface charge density. nC/m² (c) Calculate the capacitance. pF (d) Calculate the charge on each plate. pC

The work done by an external force to move a -8.60 μC charge from point a to point b is 1.90x10-³ J. Part A If the charge was started from rest and had 4.77x10-4 J of kinetic energy when it reached point b, what must be the potential difference between a and b? ——| ΑΣΦ Vb - V₂ = ? V

A simple capacitor can be constructed from two conductive plates. Two conductive plates with an area of 10.0cm x 10.0 cm are held facing one another at a separation of 1.50 mm and 12.0 V is applied between them. a) Find the capacitance of this configuration b) Find the charge on the plates. c) How much energy is stored in the capacitor? d) How much energy can the capacitor store if a dielectric with K= 4.5 is inserted between the plates rather than air?

A small object with a mass of 3.95 mg carries a charge of 26.9 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are separated by 5.4 cm. If the thread makes an angle of 11.2 degrees with the vertical, what is the potential difference in volts between the plates. Round your answer to 1 decimal place.

Oppositely charged parallel plates are separated by 5.09 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates? (b) What is the magnitude of the force on an electron between the plates? (c) How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.18 mm from the positive plate?