A small object with a mass of 4.92 mg carries a charge of 33.4 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are separated by 5.79 cm. If the thread makes an angle of 12.3° with the vertical, what is the potential difference in volts between the plates?

a 28 x 10-6 C point charge is held at rest within a uniform Electric field of 53.1 N/C directed in the +x direction. If the charge is moved a distance of 0.5 m in the +x direction, what potential difference did it move through?

A nervous physicist worries that the two metal shelves of his wood frame bookcase might obtain a high voltage if charged by static electricity, perhaps produced by friction. What is the capacitance of the empty shelves if they have area 0.375 m2 and are 0.175 m apart? What is the voltage between the two shelves if opposite charges of magnitude 3.25×10−9 C are placed on them? Calculate the energy stored by having this charge on the two shelves.

A particle with a charge of -4.7 µC and a mass of 1.4 x 10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 67 m/s. The only force acting on the particle is the electric force. What is the potential difference VB - VA between A and B? If VB is greater than VA, then give the answer as a positive number. If VB is less than VA, then give the answer as a negative number. Number i Units V

An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 2.00 mm. A 21.0-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 Need Help? Read It Master It

A small object with a mass of 4.32 mg carries a charge of 24 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are separated by 5.63 cm. If the thread makes an angle of 13.7° with the vertical, what is the potential difference in volts between the plates?

Two small pithballs are attached to long silk threads. The balls are 1cm apart and are suspended between two very large (area=10m2) conducting plates whose separation is 3cm. The balls have equal amounts of positive and negative charge +q and -q (q=8x10-10C) A potential difference V is applied to the plates such that the silk threads hang vertically. a) Find V b) Find the capacitance of the two plates and the charge on either plate. c) The potential differences is removed and a gas with dielectric constant K=1.05 is allowed to completely fill the volume between the plates. Find the energy density in the volume.

Each plate of a parallel-plate capacitor is circular and has diameter 24.0 cm. The plates are 15.0 μm apart, and carry charges of +8.00 μC and -8.00 μC. An electron begins at rest at the negative plate and is released. What is its speed when it reaches the other plate? 1.45 x 107 m/s 5.13 x 106 m/s 2.05 x 107 m/s 1.024 x 107 m/s 7.26 x 106 m/s

A parallel-plate capacitor has plates separated by 0.58 mm. What is the potential difference between the plates if the electric field between the two plates has a magnitude of 3.2 104 V/m?   Group of answer choices 101 V 18.6 V 92.8 V 165 V

An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.40 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