An anxious physicist worries that the two metal shelves of a wood frame bookcase might obtain a high voltage if charged by static electricity, perhaps produced by friction. (a) What is the capacitance (in F) of the empty shelves if they have area 2.80 x 102 m2 and are 0.300 m apart? F (b) What is the voltage between them (in V) if opposite charges of magnitude 2.30 nC are placed on them? V (c) To show that this voltage poses a small hazard, calculate the energy stored (in J). J (d) The actual shelves have an area 100 times smaller than these hypothetical shelves. Are his fears justified? Yes O No

An anxious physicist worries that the two metal shelves of a wood frame bookcase might obtain a high voltage if charged by static electricity, perhaps produced by friction. (a) What is the capacitance (in F) of the empty shelves if they have area 2.80 x 102 m2 and are 0.300 m apart? F (b) What is the voltage between them (in V) if opposite charges of magnitude 2.30 nC are placed on them? V (c) To show that this voltage poses a small hazard, calculate the energy stored (in J). J (d) The actual shelves have an area 100 times smaller than these hypothetical shelves. Are his fears justified? Yes O No

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

(a) When a 3.00-V battery is connected to the plates of a capacitor, it stores a charge of 19.0 µC. What is the value of the capacitance? μF (b) If the same capacitor is connected to a 15.0-V battery, what charge is stored? μC
A parallel-plate capacitor with area 0.220 m2 and plate separation of 4.40 mm is connected to a 6.80-V battery. (a) What is the capacitance? (b) How much charge is stored on the plates? (c) What is the electric field between the plates? N/C (d) Find the magnitude of the charge density on each plate. |C/m2 (e) Without disconnecting the battery, the plates are moved farther apart. Qualitatively, what happens to each of the previous answers?
A parallel-plate capacitor, with vacuum in the middle, has a capacitance of 1.2 microFarad. The capacitor is charged by a 12-V battery. While the capacitor is connected to the battery, a dielectric material is inserted between the plates. This results to an additional charge of 2.6×10^-5 C that flows from one plate to the other plate. Determine the dielectric constant of the material.
Does the capacitance C of a capacitor increase, decrease, or remain the same when the charge Q on it is doubled?
An air-filled parallel-plate capacitor has plates of area 2.00 cm2 separated by 1.70 mm. The capacitor is connected to a(n) 11.0 V battery. (a) Find the value of its capacitance. pF(b) What is the charge on the capacitor? pC(c) What is the magnitude of the uniform electric field between the plates? N/C
a) What is the electrical potential, in units of Volt, in the rod at x=L/2 ? b) What is the electric-field magnitude E, in units of V/m, in the rod at x=L/2?
An engineer builds a parallel-plate capacitor with adjustable spacing between the plates. When the plates are at their initial separation, the capacitance is 2.00 uF. (a) At this capacitance, the capacitor is connected to a 20.00 V battery. After fully charging, how much energy (in ) is stored in the capacitor? μJ (b) The battery is then disconnected. Without discharging the capacitor, the engineer then doubles the separation between the plates. At this point, how much energy (in µ3) is stored in the capacitor? p] (c) Without changing this new separation between the plates, the capacitor is discharged, and then reconnected to the 20.00 V battery. Now, after fully charging, how much energy (in p) is stored in the capacitor? p3
An air-filled parallel-plate capacitor has plates of area 2.60 cm² separated by 2.50 mm. The capacitor is connected to a 15.0-V battery. (a) Find the value of its capacitance. pF (b) What is the charge on the capacitor? pC (c) What is the magnitude of the uniform electric field between the plates? V/m
A parallel-plate capacitor with area 0.220 m² and plate separation of 2.00 mm is connected to a 7.40-V battery. (a) What is the capacitance? F (b) How much charge is stored on the plates? C (c) What is the electric field between the plates? N/C (d) Find the magnitude of the charge density on each plate. C/m2 (e) Without disconnecting the battery, the plates are moved farther apart. Qualitatively, what happens to each of the previous answers?
A)1)
9. Consider the two long, cylindrical conductor, separated by a distance d form a capacitor, Cylinder 1 has charge density A and radius bị and Cylinder 2 has charge density –) and radius b2. Show that the capacitance per unit length is given approximately by C = TE0 ( In where b is the geometric mean
A particle with a charge of -1.0 μC and a mass of 3.0 x 10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 11 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 VÃ, then give the answer as a positive number. If VÅ is less than VÃ, then give the answer as a negative number. Number i Units >